LeCroy LT Series Service Manual

Waverunner

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LeCroy waverunner

LT Series

Service Manual

Version A- October 1999

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Page 1 LeCroy waverunner LT Series Service Manual Version A- October 1999 www.valuetronics.com...
Page 2 Chestnut Ridge, NY 10977-6499 Tel : (914) 425-2000 Fax : (914) 425-8967 http://www.lecroy.com Copyright © October 1999. LeCroy is a registered trade-mark of LeCroy Corporation. All rights reserved. Information in this publication supersedes all earlier versions. Specifications subject to change. www.valuetronics.com...
Page 3: Read This First
Products not made by LeCroy are covered solely by the warranty of the original equipment manufacturer. Under the LeCroy warranty, LeCroy will repair or, at its option, replace any product returned within the warranty period to a LeCroy authorized service center.
Page 4: Service And Repair
Outside the warranty period, you will need to provide us with a purchase order number before we can repair your LeCroy product. You will be billed for parts and labor related to the repair work, and for shipping.
Page 5: General Information
General Information Product Assistance Help on installation, calibration, and the use of LeCroy equipment is available from your local LeCroy office, or from LeCroy’s • Customer Care Center, 700 Chestnut Ridge Road, Chestnut Ridge, New York 10977–6499, U.S.A., tel. (914) 578–6020 •...
Page 6: Safety Symbols
Safety Symbols Where the following symbols or indications appear on the instrument’s front or rear panels, or elsewhere in this manual, they alert the user to an aspect of safety. CAUTION: Refer to accompanying documents (for Safety- ......related information). See elsewhere in this manual wherever the symbol is present.
Page 7: Power Requirements
The oscilloscope has not been designed to make direct measurements on the human body. Users who connect a LeCroy oscilloscope directly to a person do so at their own risk. Use only indoors. Power Requirements The oscilloscope operates from a 100 V to 240V AC power source at 50 Hz to 60 Hz.
Page 8 Power On Connect the oscilloscope to the power outlet and switch it on using the power On/Standby button, located near the left-hand corner of the instrument below the screen. After the instrument is switched on, auto-calibration is performed and a test of the disk drive analyzer's ADCs and memories is carried out.
Page 9: Specifications
Specifications Instrument Architecture Overview PROCESSORS The Waverunner central processor (CPU), a PowerPC™ microprocessor, performs the oscilloscope’s computations and controls its operation. A range of peripheral interfaces allow you to control remotely, store waveforms and other data, and make hard copies. A support processor constantly monitors the front-panel controls. Waverunner either transfers data to display memory for direct waveform display, or stores it to reference memories, for fast data-processing.
Page 10 DISPLAY SYSTEM You control the display’s interactive, user-friendly interface using push-buttons and knobs. Display as many as eight different waveforms at once on eight separate grids. The parameters controlling signal capture are simultaneously reported. The Waverunner display presents internal status and measurement results, as well as operational, measurement, and waveform-analysis menus.
Page 11 BLOCK DIAGRAM: Hi-Z, 50 W Amplifiers + Attenuators O ptional Storage Devices Fast Sample CH 1 8-Bit ADC(s) & Hold memory Floppy Disk Interface Sample Fast CH 2 8-Bit ADC(s) Centronics memory & Hold RS-232-C E xternal Trigger Trigger GPIB Timebase Logic Power PC...
Page 12 Specifications MODELS Waverunner LT342/322 Series: Two channels Waverunner LT344 Series: Four channels ACQUISITION SYSTEM Bandwidth (−3dB): LT342/LT344/LT322:500 MHz;LT224:200 MHz @ 50 Ω and at probe tip with PP006 Bandwidth Limiter at 25 MHz and 200 MHz can be selected for each channel LT224 is 25MHz.
Page 13 Stores Multiple Events with time stamp in LT342/LT344 2–1000 segments 500 MS/s segmented acquisition memories Stores Multiple Events 2–400 segments 200 MS/s LT224/LT322 with time stamp in segmented acquisition LT342L/LT344L 2–4000 segments 500 MS/s memories ≤ 500 000 pts: Waveform slowly rolls 500 ms–1000s/div across display when Roll Mode...
Page 14 TV: Triggers on line (up to 1500) and field 1 or 2 (odd or even) for PAL (SECAM), NTSC, or non-standard video. State/Edge qualified: Triggers on any input source only if a given state (or transition) has occurred on another source. Delay between sources is selectable by time or number of events.
Page 15 LT342/LT322 LT344/LT224 LT342L LT344L 2.1.1 16 Mbytes 2.1.2 16 Mbytes 2.1.3 32 Mbytes 2.1.4 32 Mbytes 64 M BYTE SYSTEM MEMORY OPTIONAL FOR ALL MODELS INTERNAL WAVEFORM MEMORY Waveform: M1, M2, M3, M4; memory length equal to acquisition memory Zoom and Math: A, B, C, D; memory length equal to acquisition memory Memories M1–4 and A–D store full-length waveforms with 16 bits/data point SETUP STORAGE For front panel and instrument status: Four non-volatile memories and floppy drive are...
Page 16 WAVEANALYZER OPTION Adds math processing to include FFTs of 1 Mpoint waveforms, power spectrum density, spectrum averaging, waveform averaging to one million sweeps, continuous averaging, waveform histograms, and histogram parameters. Includes the Extended Math and Measurement option. SPECIAL APPLICATION SOLUTIONS Jitter and Timing Analysis (JTA): Precision cycle-to-cycle timing measurements with enhanced accuracy, histograms on persistence traces, persistence to waveform tracing and full statistical analysis.
Page 17: Theory Of Operation
Theory of Operation Theory of Operation Processor Board MPC603e Processor The PowerPC603e on the processor board is a 4-bit RISC processor having 2x32Kbyte cache and features high speed processing and quick memory access. The processor is designed to operate with an internal clock which is several times the external bus clock cycles and is used under the 32bit mode.
Page 18 CPU’s Block Diagram CPU:PowerPC 603e DRAM:2X128MB max DMAC:71071 Super I/O RS232C, Parallel, Floppy Disk MAIN Board I/F VGA:65545 BUS Sizer:MC68150 Flash PROM: 2MBmax 32bit BUS NVRAM:128KB Real Time Clock Interrupt Controller Front Panel I/F GP-IB Internal Printer I/F Small Peripherals PCMCIA type I/II/III Other Control Ports 8bit BUS...
Page 19: Refresh Timing
DRAM The DRAM circuit consists of one or two SIMM modules, constituting from 16MB to a maximum of 128 MB. The SIMM modules to be supported are only of EDO types. The DRAM control circuit is built with one piece each of CPLD and GAL, and several gate ICs.
Page 20: Memory Mapping
The data is transferred in between the I/O and DRAMs by simultaneously accessing the desired addresses in the Super I/O and DRAMs. The addresses A0 to A25 (as well as lower addresses up to 64MB on the memory map) can be accessed through the DMA controller. Since the Super I/O is directly connected to its 8bit to 32bit bus without passing through the bus sizer, data transfer can be done only to and from memory areas in which addresses are divided by intervals of 4bytes each.
Page 21: Bus Control
Bus Control The DEC32 (IC17) performs decoding operations for the circuits (32bit circuit block) which are directly connected to the processor (except the DRAM).( The DRAMC performs decoding operations for the DRAMs). The RW32 (IC76) generates the control signals of read/write for the devices associated with the DMA, and the byte enable signals (NBE0-3) for the VGA controller.
Page 22: Flash Prom
which means that their state is also guaranteed at power-up. The IC66 and the IC67 invert the most significant address bits of the memory card whenever the SWAP jumper is plugged in, so that the first bytes are always allocated to “FFF00000”, regardless of the size of the memory card. This allows to boot directly from the PCMCIA memory card used.
Page 23: Front Panel
In order to prioritize and control several interrupt sources, it is necessary to use an IC of uPD71059. It scans eight interrupt signals and sends a unique interrupt signal to the processor when an (unmasked) interrupt signal appears. Interrupt levels are assigned as follows: level 0 (lowest priority) FDC level 1...
Page 24: Reset Circuit
Reset Circuit The power supply is monitored by the IC4 chip. Whenever the Vcc goes below 4.5V (even for a very short time), a reset pulse, in which the width is determined by the C6’s capacity, is generated. Resetting 3 buttons on the front panel also causes to generate the reset pulse as did in the IC4 when the supply power voltage fell too low.
Page 25 after accessing 8bit devices. Regarding the PCMCIA and small peripherals, however, the termination can be delayed by giving an external wait signal. The GALs which are not shown in this block-diagram are the ARBT and RW32. • ARBT does the bus arbitration during the DMA’s execution. It also generates a bus error when the bus cycle passes over the defined time.
Page 26: Front End
Main Board Introduction The main board is divided into the following sections: Front End A/D Converter & Memory Trigger Timebase DC Generator Calibrator & Internal Calibration signal Signal output Main Board Control 4.2.1 Front End The front end processes an analog signal for ADC and trigger, consists of High impedance buffer, amplifier HFE428, and trigger comparator HTR420.
Page 27 Control Relay control The relay of the attenuator is set by selecting the input coupling and the gain as shown in the table below. RL1, 2 and 5 are driven with +5V/0V, and RL3, 4 is driven with +5V/-5V. Input coupling Control port Relay 1M,DC...
Page 28 CHX OVLD. Calibration The front end executes the calibration of GAIN, BALANCE when the panel setups and the ambient temperature change, so guarantees the accuracy. Block figure 2 shows the supply of the reference voltage INT CAL. The calibration executes with INT CAL of standard DC voltage. The INT CAL is all CH common signal and standard DC voltage of the maximum +/- 600mV.
Page 29 4.2.2 A/D Converter & Memory Introduction The analog to digital converter system does the signal conversion to 8bit, using the following circuits: HAD626 Chip on board MCM (Multi Chip Module). Hybrid Acquisition Module containing both track & hold amplifier and 8bit ADC. Differential signal input.
Page 30 4.2.3 Trigger Introduction The trigger system includes the following circuits: HTR420 Chip on board MCM. Hybrid TRigger module designed for a trigger conditioning in DSO. Differential signal input. (Nominal 500mVpp full scale.) Dual threshold inputs controlled by DC generator output. Selectable filtering of input signal.
Page 31 A/D CONVERTER & MEMORY Block Diagram Theory of Operation 4-15 www.valuetronics.com...
Page 32 4-16 Theory of Operation www.valuetronics.com...
Page 33 TRIGGER Block Diagram Theory of Operation 4-17 www.valuetronics.com...
Page 34 4-18 Theory of Operation www.valuetronics.com...
Page 35 4.2.4 Timebase Introduction The timebase system includes the following three circuits: MTB411A Monolithic Time Base has five main sections: TIMEBASE comprises five counters and associated logic circuitry for the timebase system. TDC consists of two counters for interpolated and real computation. TRIGGER is made up of two counters to be used by trigger circuitry.
Page 36 www.valuetronics.com...
Page 37 TIMEBASE Block Diagram Theory of Operation 4-21 www.valuetronics.com...
Page 38 4-22 Theory of Operation www.valuetronics.com...
Page 39 4.2.5 DC Generator Introduction DC generator includes the following circuits: DC Generator generates analog signals to control Front End offset, HFE428 gain, HTR420 threshold levels and the other circuits. 8bit microprocessor controls DC generator system. DC generator uses a commercial 16bit DAC (DAC712). Nominal +/-400mV full scale.
Page 40 generates clock signals for following components: MTB411A (16MHz) IIC BUS chip (8MHz) 8bit microprocessor of DC Generator (4MHz) MCG426 control generates special signals for access to MCG426. generates *ATTenuator ENable signal to protect 50ohm input during power-up. MST412 control generates special signals for writing commands to MST412. Serial I/F control generates the following serial interface signals.
Page 41 DC GENERATOR Block Diagram Theory of Operation 4-25 www.valuetronics.com...
Page 42 4-26 Theory of Operation www.valuetronics.com...
Page 43 MAIN BOARD CONTROL Block Diagram Theory of Operation 4-27 www.valuetronics.com...
Page 44 4-28 Theory of Operation www.valuetronics.com...
Page 45 OUTLINE OF WAVERUNNER POWER SUPPLY Input voltages :Wide ranges of inputs, 90∼132 V AC and 180∼250 V AC (45∼66 Hz) are allowed. Output voltages: 9 different DC voltages available. +5 V (DIG) +12 V (DIG) +12 V (FAN) +24 V (PRINTER) -4.5 V (DIG)
Page 46 forced air cooling with the fan-motors, operating the power supply for long hours by removing the upper and bottom covers would cause tripping of the overheat protection circuit because of a temperature rise in the unit, and result in the cease of power output.
Page 47 #Circuit No. 3 / 7 The variable resistor, R117, is to adjust the output voltage of -4.5 V DC. # Circuit No. 4 / 7 The outputs of ±5 V DC (ANA) and ±12 V DC (ANA) use the series regulator, consisting of the transistors Q10 to Q18 and IC9, which stabilizes the output voltage and reduces the ripple voltages.
Page 48 transformer T3 and others. The Main power supply-A generates the output voltages of +5 V DC (for DIG Circuit), +12 V DC (for DIG Circuit and Fan), and +24 V DC (for Printer), respectively. The IC6 in the circuit of the switching power control ICs receives the power which is fed by the auxiliary power supply (circuit No.6/7) consisting of the transistor Q4 and the transformer T2, to output the driving signals (Gate signals) for the transistor Q8 (circuit No.3/7);...
Page 49 BLOCK DIAGRAM of FND POWER SUPPLY Theory of Operation 4-33 www.valuetronics.com...
Page 50: Performance Verification
Because they require time and suitable test equipment, you may not need to perform all of these procedures, depending on what you want to accomplish. In the absence of the computer automated calibration system based on LeCroy Calibration Software (LeCalsoft), this manual performance verification procedure can be followed to establish a traceable calibration.
Page 51: Test Equipment Required
Keep them as masters and use a photocopy for each calibration. Turn On If you are not familiar with operating the LT Series, read the operator's manual. § Switch on the power using the power switch. § Wait for about 20 minutes for the scope to reach a stable operating...
Page 52: Input Impedance
5.3.1 PNL Files § Use PNL Files depend on the LT344,LT342,LT322,LT224. § The LTxxx shows one of the LT344,LT342,LT322,LT224. Input Impedance The impedance values for 50Ω and 1MΩ couplings are measured with a high precision digital multimeter. The DMM is connected to the DSO in 4 wire configuration (input and sense), allowing for accurate measurements.
Page 53 § Set the DMM with Ohms and Ohms sense to provide a 4 wire measurement. § Connect it to Channel 1. § Measure the input impedance. Record it in Table 2, and compare it to the limits. § Repeat the above test for all input channels. §...
Page 54 § For all input channels measure the input impedance. § Record the input impedance in Table 2, and compare it to the limits. § Recall LTxxxP004.PNL or Set Input gain to 200 mV/div on all 4 Channels. § Repeat the test for all input channels. §...
Page 55 § For all input Channels, measure the input impedance. § Record the input impedance in Table 2, and compare it to the limits. § Recall LTxxxP006.PNL or set Input gain to 200 mV/div. on all 4 Channels § Repeat the test for all input channels. Record the measurements in Table 2, and compare the results to the limits in the test record.
Page 56 § Connect the DMM to External, and measure the input impedance. § Record the input impedance in Table 2, and compare it to the limits. § Recall LTxxxP008.PNL or set trigger to Ext/10 § Measure the input impedance. § Record the test result in Table 2, and compare the result to the limits in the test record.
Page 57 § Connect the DMM to External, and measure the input impedance. § Record the input impedance in Table 2, and compare the result to the limit in the test record. 5-8 Performance Verification www.valuetronics.com...
Page 58: Leakage Current
Leakage Current The leakage current is tested by measuring the voltage across the input channel. Test limit DC 1MΩ : ±1 mV 5.5.1 Channel Leakage Current § Recall LTxxxP010.PNL or configure the DSO : Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1, Channel 2, Channel 3 &...
Page 59 5.5.2 External Trigger Leakage Current a. DC 50Ω § Recall LTxxxP011.PNL or configure the DSO as shown in 5.5.1 and make the following changes : Select Setup trigger Set Trigger on External DC 50Ω § Connect the DMM to External. §...
Page 60 Noise Noise tests with open inputs are executed on all channels for both 1MΩ and 50Ω input impedance, with AC and DC input coupling, 0 mV offset, at a gain setting of 5mV/div., and different Time base settings. The scope parameters functions are used to measure the RMS amplitude. 5.6.1 Rms Noise Test limits...
Page 61 § Press Clear Sweeps. § Measure for at least 50 sweeps, then press Stop to halt the acquisition. § Record the four high sdev parameter values in Table 4, and compare the test results to the limits in the test record. §...
Page 62 § Record the four high sdev parameter values in Table 4, and compare the test results to the limits in the test record. Performance Verification 5-13 www.valuetronics.com...
Page 63 c. DC 50Ω § Recall LTxxxP014.PNL or configure the DSO as shown in 5.6.1 and make the following changes : Input Coupling DC 50Ω on all 4 Channels 2 µsec/div. Time base § Press Clear Sweeps. § Measure for at least 50 sweeps, then press Stop to halt the acquisition. §...
Page 64 5.6.2 Erroneous Read / Write Test Test limit ±2.5 % of full scale at 50 mV/div. Procedure a. Channel 1, Channel 2, Channel 3 and Channel 4 § For LT Series recall LTxxxP015.PNL, for LT 34XL recall LT344 P016.PNL. Channels Trace ON Channel 1, Channel 2, Channel 3 &...
Page 65 § Press Reset Zoom+Math § Press MEASURE TOOLS Measure Parameters Mode Pass Testing Select Change Test Conditions On line Action Fail Then Stop Yes Store No Dump No Beep Yes Pulse No On line 1 Test on Mask True if all points of 1 are inside mask D On line 2 Test on Mask True if all points of 2 are inside mask D...
Page 66 Performance Verification 5-17 www.valuetronics.com...
Page 67 5-18 Performance Verification www.valuetronics.com...
Page 68 § Select Modify Mask From W'form Into Use W'form Delta V 0.20 div Delta T 0.00 div § To start the test, select MEASURE TOOLS, Change Test Conditions, Modify Mask and press Make Mask M1 § After 1000 sweeps for LT322 and LT224, or 400 sweeps for LT344 and LT342, or after sweeps for LT344L check that the number of Passed equals...
Page 69 DC Accuracy This test measures the DC Accuracy of the absolute voltage measurements at 0V offset setting. It requires a DC source with a voltage range of 0 V to 20 V adjustable in steps of no more than 15 mV, and a calibrated DMM that can measure voltage to 0.1 %. Measurements are made using voltage values applied by the external voltage reference source, measured by the DMM, and in the oscilloscope using the parameters Std voltage.
Page 70 Statistics Change parameters On line 1 Measure mean of A On line 2 Measure mean of B On line 3 Measure mean of C On line 4 Measure mean of D § For the low sensitivities: 2 mV, 5 mV, 10 mV and 20 mV/div., connect the test equipment as shown in Figure 5-1.
Page 71 LC584AL 1GHz Oscilloscope Figure 5-2 : DC 1MΩ Accuracy Equipment Setup for 100 mV/div LC584AL 1GHz Oscilloscope Figure 5-3 : DC 1MΩ Accuracy Equipment Setup for 5V/div. 5-22 Performance Verification www.valuetronics.com...
Page 72 § For each DSO Volts/div, set the output of the external DC voltage reference source as shown in Table 6, column PS output. 1) Connect the DMM and record the voltage reading in Table 6, column DMM. 2) Disconnect the DMM from the BNC T connector. 3) Press Clear Sweeps 4) After 100 sweeps, read off the DSO mean parameter, and record the measurement in Table 6, column Mean.
Page 73: Offset Accuracy
Offset Accuracy The offset test is done at 5mV/div, with a signal of ±1 Volt cancelled by an offset of the other polarity. Specifications ± (0.015 x Voffset + 0.005 x FS + 1mV) FS [volts] = 8[div] x sensitivity[volts/div] Voffset [volts] = setting offset voltage Procedure §...
Page 74 § Connect the test equipment as shown in Figure 5-4. LC584AL 1GHz Oscilloscope § Set the output of the external DC voltage reference source to −1 Volt. 1) Verify that the displayed trace A : Average (1) is on the screen, near the center horizontal graticule line.
Page 75 Record the measurements in Table 7. § Calculate the Difference ( ∆ ) by subtracting the DMM voltage reading from the DSO mean voltage reading. § Record the test result in Table 7, and compare the Difference ( ∆ ) to the corresponding limit in the test record.
Page 76 Bandwidth The purpose of this test is to ensure that the entire system has a bandwidth of at least 500MHz 200MHz. An external source is used as the reference to provide a signal where amplitude and frequency are well controlled. The amplitude of the generator as a function of frequency and power is calibrated using an HP8482A sensor on an HP437B power meter or equivalent.
Page 77 § Connect a 5ns 50Ω BNC cable to the RF output of the HP8648B generator and then through a 6dB attenuator and the necessary adapters to the power sensor. Figure 5-5 : Power Meter Equipment Setup §Set the generator frequency to 300 kHz §Set the generator amplitude to measure 0.200 mW on the power meter.
Page 78 LC584AL 1GHz Oscilloscope Figure 5-6 : 50Ω Bandwidth Equipment Setup § Measure for at least 100 sweeps, record the average value of sdev(1) I nTable 8 § Repeat the above 3 steps for Channel 2, Channel 3 & Channel 4 substituting channel controls and input connector.
Page 79 § Recall LTxxxP022.PNL or configure the DSO as shown in 5.9 and for each Channel make the following change : Input gain 100mV/div § Connect the test equipment as shown in Figure 5-5. § Set the generator frequency to 300 kHz §...
Page 80 § Set the generator frequency to 300 kHz. § From the generator, apply the recorded generator signal amplitude to Channel 1. § Press Clear Sweeps. § Measure for at least 100 sweeps, record the average value of sdev(1) in Table §...
Page 81 § Set the generator frequency to 300 kHz. § Adjust the generator signal amplitude to measure sdev(1) = 200 mV. § Set Time base : 50 nsec/div. § Increase the generator frequency until sdev(1) = 140 mV. (typically 25 MHz) §...
Page 82 The following test of BWL: 200MHz is not applied for LT224. § Set Global BWL 200 MHz § Set Timebase 5 nsec/div. § Increase the generator frequency until sdev(1) = 140 mV. (typically 200 MHz) Performance Verification 5-33 www.valuetronics.com...
Page 83 § Press Clear Sweeps § When sdev(1) = 140 mV, record Freq(1) in Table 10. § Repeat the 25 MHz and 200 MHz Bandwidth limiter tests for the other channels, substituting channel controls and input connector. § Recall LTxxxP024.PNL for Channel 2, LTxxxP025.PNL for Channel3 LTxxxP026.PNL for Channel 4, or configure the DSO as shown in 5.9.1 Procedure and make the necessary changes.
Page 84: Trigger Level
5.10 Trigger Level The trigger capabilities are tested for several cases of the standard edge trigger: § Channel (internal), and External Trigger sources § Three DC levels: −3, 0, +3 major screen divisions § DC, HFREJ coupling § Positive and negative slopes 5.10.1 Channel Trigger at 0 Division Threshold a.
Page 85 § Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz. § Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable and adjust the sine wave output amplitude to get 8 divisions peak to peak .
Page 86 100 mV in the icon 1, at top left. HFREJ Coupling § Set Coupling HFREJ § Acquire 10 sweeps and record in Table 12 the level readout displayed below 100 mV in the icon 1, at top left. § Set Trigger Slope 1 : Pos §...
Page 87 § Record the measurements in Table 11 & 12 and compare the test results to the corresponding limits in the test record. 5.10.2 Channel Trigger at +3 Divisions Threshold a. DC Coupling § Recall LTxxxP031.PNL or configure the DSO as shown in 5.10.1.a and for each Channel make the following change : Set Trigger level : DC +300 mV §...
Page 88 § Set Trigger Slope 1 : Neg § Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 1, at top left. HFREJ Coupling § Set Coupling HFREJ § Acquire 10 sweeps and record in Table 12 the level readout displayed below 100 mV in the icon 1, at top left.
Page 89 § Record the measurements in Table 11 & 12 and compare the test results to the corresponding limits in the test record. 5.10.3 Channel Trigger at −3 Divisions Threshold a. DC Coupling § Recall LTxxxP035.PNL or configure the DSO as shown in 5.10.1.a and for each channel make the following change : Set Trigger level : DC −300 mV §...
Page 90 § Set Trigger Slope 1 : Neg § Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 1, at top left. HFREJ Coupling § Set Coupling HFREJ § Acquire 10 sweeps and record in Table 12 the level readout displayed below 100 mV in the icon 1, at top left.
Page 91 § Set Trigger Slope 1 : Pos § Acquire 10 sweeps and record in Table 12 the level readout displayed below 100 mV in the icon 1, at top left. § Repeat steps 5.10.3.a. and 5.10.3.b. for all input channels, substituting channel controls ( DC, HFREJ, Pos, Neg ) and input connector.
Page 92 10 sweeps § Connect the test equipment as shown in Figure 5-7. § Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz. § Adjust the sine wave output amplitude to get 8 divisions peak to peak .
Page 93 LC584AL 1GHz Oscilloscope Figure 5-7 : External Trigger Equipment Setup § Press Clear Sweeps § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. § Set Trigger Slope Ext : Neg 5-44 Performance Verification www.valuetronics.com...
Page 94 § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. § Compare the test results to the corresponding limit in the test record. HFREJ Coupling § Set Coupling Ext HFREJ §...
Page 95 5.10.5 External Trigger at +3 Divisions Threshold a. DC Coupling § Recall LTxxxP040.PNL or configure the DSO as shown in 5.10.4.a and make the following change : Set Ext Trigger level : DC +300 mV § Connect the test equipment as shown in Figure 5-7. §...
Page 96 § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. HFREJ Coupling § Set Ext Coupling HFREJ § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left.
Page 97 5.10.6 External Trigger at −3 Divisions Threshold a. DC Coupling § Recall LTxxxP041.PNL or configure the DSO as shown in 5.10.4.a and make the following change : − Set Ext Trigger level : DC 300 mV § Connect the test equipment as shown in Figure 5-7. §...
Page 98 HFREJ Coupling § Set Ext Coupling HFREJ § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. § Compare the test results to the corresponding limit in the test record. §...
Page 99 10 sweeps § Connect the test equipment as shown in Figure 5-7. § Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz. § Adjust the sine wave output amplitude to get 8 divisions peak to peak .
Page 100 § Press Clear Sweeps § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. § Set Trigger Slope Ext/10 : Neg § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left.
Page 101 HFREJ Coupling § Set Coupling Ext/10 : HFREJ § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. § Set Trigger Slope Ext/10 : Pos § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left.
Page 102 5.10.8 External/10 Trigger at +3 Divisions Threshold a. DC Coupling § Recall LTxxxP043.PNL or configure the DSO as shown in 5.10.7.a and make the following change : Set Ext/10 Trigger level : DC +3 V § Connect the test equipment as shown in Figure 5-7. §...
Page 103 § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. HFREJ Coupling § Set Ext/10 Coupling: HFREJ § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left.
Page 104 5.10.9 External/10 Trigger at −3 Divisions Threshold a. DC Coupling § Recall LTxxxP044.PNL or configure the DSO as shown in 5.10.7.a and make the following change : − Set Ext/10 Trigger level : DC § Connect the test equipment as shown in Figure 5-7. §...
Page 105 HFREJ Coupling § Set Ext/10 Coupling: HFREJ § Acquire 10 sweeps and record in Table 13 the level readout displayed below 100 mV in the icon 2, at top left. § Compare the test results to the corresponding limit in the test record. §...
Page 106: Pulse Width
5.11 Smart Trigger 5.11.1 Trigger on Pulse Width 10 nsec a. Pulse Width < 10 nsec § Recall LTxxxP045.PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels trace ON Channel 1 Input coupling DC 50Ω Input gain .5 V/div.
Page 107 5-58 Performance Verification www.valuetronics.com...
Page 108 5.11.2 Trigger on Pulse Width 100 nsec a. Pulse Width < 100 nsec § Recall LTxxxP046.PNL or configure the DSO as shown in 5.11.1.a and make the following changes : Width < 100 nsec : Width > 100 nsec : Time base 20 nsec/div.
Page 109 5.12 Time Base Accuracy An external sine wave generator of 0.1 MHz with a frequency accuracy better than 1 PPM is used. Specifications & Test limit Clock: accuracy: ≤ ±0.001 % or ≤ ±10 PPM Procedure § Recall LTxxxP047.PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels trace ON...
Page 110 § Measure Parameters § Mode Custom § Statistics § Change parameters § On line 1 Delay of 1 § On line 2 Delay of A § Check that the displayed Channel 1 trace is aligned with the sine wave from memory 1.
Page 111 5.13 Overshoot and Rise time (10 % - 90 %) Test limit Overshoot < 12%, rise time < 0.80 ns LT344/L, LT342/L, LT322 Overshoot < 10%, rise time < 1.9 ns LT224 Procedure § Recall LTxxxP049.PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels trace ON...
Page 112 § Connect the fast pulse generator 4969A and PB049 power adapter, or equivalent as shown in Figure 5-8. § Set the 4969A frequency to 1 kHz Figure 5-8: 50 Ω Overshoot & Rise time Equipment Setup § Press Clear Sweep §After 100 sweeps record over+(A) and rise(A) measurements in Table 16.
Page 113 5-64 Performance Verification www.valuetronics.com...
Page 114 5.14 Overload est limit 1 Watt into 50Ω : Overload Trip < 30 seconds a. Channel Overload Trip § Recall LTxxxP053.PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4 Input coupling DC 50Ω...
Page 115 § Set the output of the external DC voltage source to +5.00 Volt corresponding to 0.5 Watt into 50Ω. § For all channels check that the overload doesn't trip for at least 60 seconds. Record the test result in Table 17. 5-66 Performance Verification www.valuetronics.com...
Page 116 b. External Overload Trip § Recall LTxxxP054.PNL, or configure the DSO as shown in 5.14.a and make the following changes. Channel Trace ON : Channel 2 Input coupling DC 1MΩ Trigger on Slope Ext Pos. External DC 50Ω Mode Norm Set Trigger level : DC 0.0 mV §...
Page 117 § Set Time base 5 sec/div. § Set the output of the external DC voltage source to +5.00 Volt § Check that the External overload doesn't trip for at least 60 seconds. Record the test result in Table 17. 5-68 Performance Verification www.valuetronics.com...
Page 118: Test Equipment Used
LT Series Test Record LeCroy Digital Storage Oscilloscope Performance Certificate Series Manual Performance Test Procedure Version B - September 1999 Model Serial Number Customer Software Version Inspection Date Next Due Temperature Humidity Tested By Report Number Place of Inspection Condition found...
Page 119 LT Series Test Record Coupling Volts/div. Measured Measured Measured Measured Measured Measured Lower Upper Channel 1 Channel 2 Channel 3 Channel 4 External External/10 Limit Limit Impedance Impedance Impedance Impedance Impedance Impedance Ω, MΩ Ω, MΩ Ω, MΩ Ω, MΩ...
Page 120 LT Series Test Record Coupling Time/Div. Measured Measured Measured Measured Limits sdev Channel 1 sdev Channel 2 sdev Channel 3 sdev Channel 4 20 ms DC 1MΩ 1 ms DC 1MΩ 50 µs DC 1MΩ 2 µs DC 1MΩ 2 µs AC 1MΩ...
Page 121 LT Series Test Record Volts Attenu Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Limits /div ator V & mV V & mV V & mV V & mV ∆ ∆ ∆ ∆ Mean Mean Mean Mean Mean−...
Page 122 LT Series Test Record Volt Coupling Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Limits /div. offset output V & mV V & mV V & mV V & mV ∆ ∆ ∆ ∆ Mean Mean...
Page 123 LT Series Test Record LT224 Frequency Measured Generator Measured Measured Measured Measured Lower Upper Power Amplitude Channel 1 Channel 2 Channel 3 Channel 4 Limit Limit Sdev(1) Ratio(1) Sdev(2) Ratio(2) Sdev(3) Ratio(3) Sdev(4) Ratio(4) to 0.3 to 0.3 to 0.3 to 0.3...
Page 124 LT Series Test Record LT344/L, LT342/L,LT322 Frequency Measured Generator Measured Measured Measured Measured Lower Upper Power Amplitude Channel 1 Channel 2 Channel 3 Channel 4 Limit Limit Sdev(1) Ratio(1) Sdev(2) Ratio(2) Sdev(3) Ratio(3) Sdev(4) Ratio(4) to 0.3 to 0.3 to 0.3 to 0.3...
Page 125 LT Series Test Record LT344/L, LT342/L, LT322 Global Amplitude Measured Measured Measured Measured Lower Upper at 300 kHz Channel 1 Channel 2 Channel 3 Channel 4 Limit Limit Sdev(1) Freq(1) Sdev(2) Freq(2) Sdev(3) Freq(3) Sdev(4) Freq(4) Sdev LT224 Global Amplitude...
Page 126 LT Series Test Record Trigger Trigger Channel 1 Channel 2 Channel 3 Channel 4 Lower Upper Level Slope Limit Limit Measured Measured Measured Measured Trigger Trigger Trigger Trigger Level (1) Level (2) Level (3) Level (4) −30 −30 +300 +270...
Page 127 LT Series Test Record Trigger External External External External External/10 External/10 External/10 External/10 Slope Trigger HFREJ Limits Trigger HFREJ Limits Level Level Measured Measured Lower Upper Measured Measured Lower Upper DC Trigger HFREJ DC Trigger HFREJ Level (Ext) Trigger Level (Ext10)
Page 128 LT Series Test Record Generator Post Trigger Delay (A ) Delay (1) Difference Lower Upper delay(A) −delay(1)+5msec Frequency Delay Limit Limit µsec µsec Msec msec 1.00000 5.00000 -0.5 +0.5 Table 15: Time Base Test Record Coupling Measured Measured Measured Measured...
Page 129 LT Series Test Record DC Reference Measured Measured Measured Measured Measured Overload Trip Source Channel 1 Channel 2 Channel 3 Channel 4 External Limit Overload Trip Overload Trip Overload Trip Overload Trip Overload Trip Volt 7.07 < 30 5.00 > 60...
Page 130: Maintenance
Maintenance Introduction This section contains information necessary to maintain, calibrate and troubleshoot the LeCroy waverunner digital storage oscilloscopes. 6.1.1 Safety Precautions symbol used in this manual indicates dangers that could result in personal injury. symbol used in this manual identify conditions or practices that could damage the instrument.
Page 131 LeCroy Corporation has a policy of continually improving and upgrading its products. The LT Series instrument is equipped with flash Prom on processor board. The software is updated to the latest version using either the floppy disk drive or the memory card interface.
Page 132: Software Options
• Cycle power to the scope with no floppy or card inserted. • When the scope boots enter the “Show Status“ , “System“ menu to verify that version 8.1.1 or later is running. • Insert the Card created above into the PCMCIA Slot. •...
Page 133 Board Exchange Procedure 6.4.1 Processor Board Exchange Procedure The serial number of the LT Series oscilloscope is loaded in the real time clock memory which is battery backed up. If it becomes necessary to replace the processor board, the serial number must be loaded in the memory of the new board by using LeCroy program "...
Page 134 After Main Board is exchanged, adjust as the following method. • Assemble the lower cover and upper cover. • Plug in the power cord and turn on the LT Series. • Wait for fifteen minutes. • Enter the internal menus by pressing menu soft-keys 3 & 4, then release soft- key 3, then release soft-key 4, then press soft-key 5.
Page 135: Initial Troubleshooting Chart
• Open the fuse box by inserting a small flat screwdriver under the plastic cover and remove the fuse carrier from the holder • Remove the fuse and replace it with the proper type: T6.3 A / 250 V, LeCroy part number: 433 162 630 6.5.3 Initial Troubleshooting Chart...
Page 136 Fan Problem See Section 6.5.4 Power Supply See Section 6.5.5 Problem Display Problem See Section 6.5.6 Abnormal Image on See Section 6.5.7 Screen Front Panel Controls Do not See Section 6.5.8 Operate Plug in the Power Remote Control Cord and Turn on GPIB or RS232 See Section 6.5.9 the waverunner...
Page 137: Fan Problem
6.5.4 Fan Problem Start Main AC Line Repair as Voltage 90 to Needed. 250V OK ? AC Power Cord Repair Power OK ? Code. DSO Input Line See Power Fuses OK ? Supply Problem Section 6.5.5. Is +12V from See Power Power Supply to Supply Problem Fan Correct ?
Page 138 6.5.5 Power Supply Voltage Problem Start AC Line Repair as Need. Voltage 90 to 250V OK ? AC Power Repair Power Cord OK ? Cord. Is Fan-mortor Is Power Is AC Line Stopped. Supply Load Fuse on Rear Shorted ? Panel Opened.
Page 139: Display Problem
6.5.6 Display Problem Start Are Power Supply See Power Voltages on CPU Board P11 Supply Problem. Correct Do a General Reset. Are Power Supply Replace CPU Voltages on CPU Board J1 #28-30 board. Correct ? Is External VGA Replace CPU Video Correct ? board.
Page 140 6.5.7 Front Panel Controls Do not Operate Start Are Power Supply See Power Voltages on CPU Board P11 Supply Problem. Correct ? Do a General Reset. Are Power Supply Replace CPU Voltages Correct on CPU Board J6 board. #4,5 ? Is Flat Cable to Reseat or Panel Correctly...
Page 141 6.5.8 Remote Control GPIB or RS232 Problem Start Is DSO Change Setting GPIB/RS232 in DSO Utilities Setup Correct ? Main Menu. Is Appropriate Change Device Device Settings Settings. Correct ? Is RS232 Cable Check RS232 Configuration Cable Pinout Correct ? from DSO to Device.
Page 142 6.5.9 Floppy Disk Drive Problem Start Is Cable to Floppy Fix Flat Cable Disk Drive Properly from CPU board Installed ? to Floppy Disk Drive. Do a General Reset. Replace Floppy Disk Drive. Replace CPU board. Maintenance 6-13 www.valuetronics.com...
Page 143 6.5.10 Performance Verification Fails Start See Power Supply Are Power Supply Voltages Correct Problem. at 21J1,2,3 on CPU ? Are Power Supply Check 7 to 10IC2, 3, Voltages Correct 4, 5. at HAD626? Is Channel 1, 2, 3 Check 2 to 6RL1, &...
Page 144 6.5.11 Graphic Printer Problem Start Is Cable to Printer Fix Flat Cable Controller Properly from CPU Board Installed ? to Printer Controller Board. Are Power Supply Check Power Voltages on Printer Controller Cable From P4 Correct ? Power Supply to Printer Controller Replace Printer See Power...
Page 145 6.5.12 Centronics Problem Start Check Setting in DSO Utilites Menu, Hard Copy Setup, Output to Centronics. Check Appropriate Protocol. Do a General Reset. Replace CPU Board. 6-16 Maintenance www.valuetronics.com...
Page 146 6.5.13 Hard Disk Drive Problem Start Check Setting in DSO Utilites Menu, Hard Copy Setup, Output to Hard Disk. Replace Hard Disk Drive. Replace CPU Board. Maintenance 6-17 www.valuetronics.com...
Page 147 Mechanical Parts & Removal 7. Mechanical Parts & Removal A. Removal of the Upper Cover Assembly (with printer) • A1, A2 : Remove the nine M3 x 6 screws with nylon washer (one on the top/each two on the right and left sides/four on the rear). •...
Page 148 [A6] [A7] Upper Cover Replaceable Parts Item IWATSU Part Number Quantity Description MKB130062 Screw M3x6 MPW930000 Washer W-3, nylon KBA787311 STD TOP COVER LE MTH000791 Handle THA-238-L260 UL-I MGA000721 Side Foot 5475 UL-I KPL142611 Cushion 3, 4, 5, 6 21302-5676 LT UPPER COVER ASSY 7-2 Mechanical Parts &...
Page 149 [A8] [A9] Upper Cover (with a built-inprinter) Replaceable Parts Item IWATSU Part Number Quantity Description MKB130062 Screw M3x6 MPW930000 Washer W-3, nylon KBA786321 TOP COVERL E MTH000791 Handle THA-238-L260 UL-I MGA000721 Side Foot 5475 UL-I KPL142611 Cushion KCM141411 PRINTER COVER FRAME UL-I KCM141311 PRINTER COVER UL-I 3, 4, 5,...
Page 150 B. Removal of the Bottom Cover Assembly • Remove the upper cover. • Remove the five M3 x 6 screws (with nylon washer, 3 on the bottom/2 on the rear). Bottom Cover Replaceable Parts Item IWATSU Part Number Quantity Description KBA786921 BOTTOM COVER LE KAS137811...
Page 151 C. Removal of the Printer Assembly Remove the upper cover. • C1 : Remove the four M3 x 6 screws (2 on the TOP FRAME L/2 on the center frame). • C2 : Remove the CPU J7/FFC cable. • C2 : Remove the POWER BOARD CN6/power 3P cable. [C1] [C3] [C2 ] View as the rear side of the printer unit lifted...
Page 152 Printer Parts Item IWATSU Part Number Quantity Description MKB130062 Screw KB(+)3X6S(NIP) DZB992361 PRINTER FTP-642MCL001 KHB189311 PRINTER POWER CABLE UL-I KHB189611 PRINTER HEAD CABLE UL-I AHB202811 FFC-26P-L140-P1/CPU KCM141211 PRINTER CASE UL-I MFA001471 TL-304-1 KBA785511 PRINTER BASE UNIT MSQ901661 Screw TT2(+)3X8S KBA786211 CENTER FRAME MKB130062 Screw KB(+)3X6S(NIP)
Page 153 D. Removal of the Floppy Assembly Remove the upper and bottom covers. • D1 : Remove the CPU BOARD J2/FFC cable from the CPU. • D1 : Remove two M3 x 6 screws on the TOP FRAME R and FRONT FRAME A. [D1] [D2] Floppy Replaceable Parts...
Page 154 E. Removal of the CPU Board Remove the upper and bottom covers. Remove the printer and floppy. Remove the four M3 x 6 screws from the right and left frame. [Note] Remove the cables on the CPU Board and next the screws on it. •...
Page 155 [E1] Front Side KB(+) 3x6S (NIP) KB(+) 3x6S (NIP) KB(+) 3x6S (NIP) KB(+) 3x6S (NIP) Rear Side Mechanical Part & Removal 7-9 www.valuetronics.com...
Page 156 [E2] [E3] CPU Board Replaceable Parts Item IWATSU Part Number Quantity Description MKB130062 18.0 Screw M3x6 21302-5610 CPU BOARD ASSY KBA784421 TOP FRAME L KBA784511 TOP FRAME R 7-10 Mechanical Parts & Removal www.valuetronics.com...
Page 157 F. Removal of the Main Board Remove the upper and bottom covers. [Note] Remove the cables on the Main Board and next the screws on it. • F1 a/b : Remove the four FFC cables (20J1/26pin, 20J4/22pin, 20J2/26pin, 20J3/22pin).). • F1 a/b : Remove the Signal out connector (16J2). •...
Page 158 [F1b] M3x6 20J4 20J3 20J1 20J2 21J3 16J2 7-12 Mechanical Parts & Removal www.valuetronics.com...
Page 159 [F2] Mechanical Part & Removal 7-13 www.valuetronics.com...
Page 160 G. Removal of the Power Supply Assembly Remove the upper and bottom covers. Remove the processor assembly. Remove the main assembly. • G1 : Remove the Harnessing belt on the main frame. • G2 : Remove the connector (CN7) on the Power board from the fan. •...
Page 161 H. Removal of the Front Panel Assembly Remove the upper and bottom covers. Remove the processor assembly. Remove the main assembly. Remove the power supply assembly. • H1 : Remove the two M3x6 screws that secure the front panel assembly and the main frame.
Page 162 [H1] H1 Replaceable Parts Item IWATSU Part Number Quantity Description KBA784011 MAIN FRAME KBA784911 SIDE FRAME L KBA785011 SIDE FRAME R MKD130061 Screw M3x6 MZT903161 Metallic support PSC60 [H2] H2 Replaceable Parts Item IWATSU Part Number Quantity Description KPL143211 INVERTER PLATE UL-1 KBA784121 FRONT FRAME A KBA784211...
Page 163 LCD Assembly [H3] LQ084VIDG21 [H4] [H5] H3 to H5 Replaceable Parts Item IWATSU Part Number Quantity Description MSQ903511 Screw PKB 2.5x8S 21302-5615 LCD CONNECTOR BOARD UL-M 21302-5680 LT LCD UNIT See Fig [H5] Mechanical Part & Removal 7-17 www.valuetronics.com...
Page 164 FRONT PANEL ASSY [H6] 3 Gasket [H7] [H8] 2:KEY RUBBER 5:KNOB-D9 6:KNOB-D12 5:KNOB-D9 6:KNOB-D12 7-18 Mechanical Parts & Removal www.valuetronics.com...
Page 165 LT344/224 FRONT PANEL ASSY Item IWATSU Part Number Quantity Description KCM140911 BEZEL FND14 UL-1 KGM029711 FND14 KEY PUBBER UL-I MZT007871 GASKET UC-3E0564 UL-I KPA219011 LT344 CONTROL PANEL UL-I KCM141021 KNOBE-D9 UL-I KCM141121 KNOBE-D12 UL-I xxxxxxxxx PANEL & KEY BOARD See Fig [H7] 1 to 7 21302-5678 LTxx4 FRONT PANEL(4CH)
Page 166 Removal of the Rear Panel Assembly Remove the upper and bottom covers. Remove the processor assembly. Remove the main assembly. Remove the power supply assembly. • I1 : Remove the rear panel assembly and four M3 x 6 screws from the main frame. •...
Page 167 Assembly Note : • Fan : Check the fan cable direction. Note the air flow, the fan extracts air from the unit and expels it. • Feet : Check that the lower feet and rear cord rack are aligned and properly tightened before re-assembly.
Page 168 8.Schematics,Layouts,Parts List Schematics, Layouts This chapter contains the schematics, layouts and parts list of the following subassemblies: LT344/L Main Board LT342/322 Main Board LT224 Main Board CPU Board Printer Power Supply Panel Board LCD Connector www.valuetronics.com...
Page 169 www.valuetronics.com...
Page 170 OVER ALL (1) Schematics, Layouts, Parts List 8-3 www.valuetronics.com...
Page 171 NOTE : Parenthesized value is for LT224 CH1 FRONT END (2) Schematics, Layouts, Parts List 8-5 www.valuetronics.com...
Page 172 NOTE : Parenthesized value is for LT224 CH2 FRONT END (3) Schematics, Layouts, Parts List 8-7 www.valuetronics.com...
Page 173 CH3 FRONT END (4) Schematics, Layouts, Parts List 8-9 www.valuetronics.com...
Page 174 CH4 FRONT END (5) Schematics, Layouts, Parts List 8-11 www.valuetronics.com...
Page 175 NOTE : Parenthesized value is applied to LT224. EXT TRIGGER (6) Schematics, Layouts, Parts List 8-13 www.valuetronics.com...
Page 176 CH1 A/D CNVT (7) Schematics, Layouts, Parts List 8-15 www.valuetronics.com...
Page 177 CH2 A/D CNVT (8) Schematics, Layouts, Parts List 8-17 www.valuetronics.com...
Page 178 NOTE : All components above are not mounted in LT342 & LT322. CH3 A/D CNVT (9) Schematics, Layouts, Parts List 8-19 www.valuetronics.com...
Page 179 NOTE : All components above are not mounted in LT342 & LT322. CH4 A/D CNVT (10) Schematics, Layouts, Parts List 8-21 www.valuetronics.com...
Page 180 NOTE : Marked components (*) are not mounted in LT342 & LT322. TRIG SELECTOR (11) Schematics, Layouts, Parts List 8-23 www.valuetronics.com...
Page 181 400MHZ OSC (12) Schematics, Layouts, Parts List 8-25 www.valuetronics.com...
Page 182 TV SYNC SEP (13) Schematics, Layouts, Parts List 8-27 www.valuetronics.com...
Page 183 NOTE : Parenthesized value is applied to LT342 & LT322. Marked components (*) are not mounted in LT342 & LT322. TIME BASE (14) Schematics, Layouts, Parts List 8-29 www.valuetronics.com...
Page 184 T/D CNVT (15) Schematics, Layouts, Parts List 8-31 www.valuetronics.com...
Page 185 CAL SIGNAL (16) Schematics, Layouts, Parts List 8-33 www.valuetronics.com...
Page 186 NOTE : Marked components (*) are not mounted in LT342 & LT322. DC GENE 1/2 (17) Schematics, Layouts, Parts List 8-35 www.valuetronics.com...
Page 187 NOTE : Marked components (*) above are not mounted in LT342 & LT322. DC GENE 2/2 (18) Schematics, Layouts, Parts List 8-37 www.valuetronics.com...
Page 188 MAIN CONT 1/2 (19) Schematics, Layouts, Parts List 8-39 www.valuetronics.com...
Page 189 NOTE : Marked components (*) are not mounted in LT342 & LT322. MAIN CONT 2/2 (20) Schematics, Layouts, Parts List 8-41 www.valuetronics.com...
Page 190 POWER CONNECTOR (21) Schematics, Layouts, Parts List 8-43 www.valuetronics.com...
Page 191 MAIN BOARD (1/2) Schematics, Layouts, Parts List 8-45 www.valuetronics.com...
Page 192 MAIN BOARD (2/2) Schematics, Layouts, Parts List 8-47 www.valuetronics.com...
Page 193 CPU (31) Schematics, Layouts, Parts List 8-49 www.valuetronics.com...
Page 194 DRAM (32) Schematics, Layouts, Parts List 8-51 www.valuetronics.com...
Page 195 BUS CONTROL (33) Schematics, Layouts, Parts List 8-53 www.valuetronics.com...
Page 196 VGA CONTROL (34) Schematics, Layouts, Parts List 8-55 www.valuetronics.com...
Page 197 32BIT I/O (35) Schematics, Layouts, Parts List 8-57 www.valuetronics.com...
Page 198 MAIN BOARD I/F (36) Schematics, Layouts, Parts List 8-59 www.valuetronics.com...
Page 199 8BIT I/O (37) Schematics, Layouts, Parts List 8-61 www.valuetronics.com...
Page 200 EXTERNAL I/F (38) Schematics, Layouts, Parts List 8-63 www.valuetronics.com...
Page 201 PCMCIA (39) Schematics, Layouts, Parts List 8-65 www.valuetronics.com...
Page 202 PANEL BOARD (40) Schematics, Layouts, Parts List 8-67 www.valuetronics.com...
Page 203 KEY BOARD (41) Schematics, Layouts, Parts List 8-69 www.valuetronics.com...
Page 204 LCD CONNECTOR (42) Schematics, Layouts, Parts List 8-71 www.valuetronics.com...
Page 205 CPU BOARD (1/2) Schematics, Layouts, Parts List 8-73 www.valuetronics.com...
Page 206 CPU BOARD (2/2) Schematics, Layouts, Parts List 8-75 www.valuetronics.com...
Page 207 PANEL BOARD (1/2) Schematics, Layouts, Parts List 8-77 www.valuetronics.com...
Page 208 PANEL BOARD (2/2) Schematics, Layouts, Parts List 8-79 www.valuetronics.com...
Page 209 LCD CONNECTOR Schematics, Layouts, Parts List 8-81 www.valuetronics.com...
Page 210 PRINTER (43) Schematics, Layouts, Parts List 8-83 www.valuetronics.com...
Page 211 POWER SUPPLY (50) 1/7 Schematics, Layouts, Parts List 8-85 www.valuetronics.com...
Page 212 POWER SUPPLY (50) 2/7 Schematics, Layouts, Parts List 8-87 www.valuetronics.com...
Page 213 POWER SUPPLY (50) 3/7 Schematics, Layouts, Parts List 8-89 www.valuetronics.com...
Page 214 POWER SUPPLY (50) 4/7 Schematics, Layouts, Parts List 8-91 www.valuetronics.com...
Page 215 POWER SUPPLY (50) 5/7 Schematics, Layouts, Parts List 8-93 www.valuetronics.com...
Page 216 POWER SUPPLY (50) 6/7 Schematics, Layouts, Parts List 8-95 www.valuetronics.com...
Page 217 POWER SUPPLY (50) 7/7 Schematics, Layouts, Parts List 8-97 www.valuetronics.com...
Page 218 POWER BOARD Schematics, Layouts, Parts List 8-99 www.valuetronics.com...
Page 219 www.valuetronics.com...
Page 220 LT344 MAIN BOARD CH1 FRONT END CH1 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 2C1, 2C2 DCC816471 C2012CH 1H 080D A TD84N 2IC5 DIC483321 74HC595F/AF TE1612B 2C3, 2C4 DCC850101 2IC6 DIC619271 TA 75S558F (TE85L) TE0804L GRM42-6CH 050C500PT TE0804N DCV819091 TZBX4 Z250BA110 TE1208R 2J1A...
Page 221 LT344 MAIN BOARD CH1 FRONT END CH2 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 2R58 DRZ832051 RK73H 2A 150 F TD0804N 3C1, 3C2 DCC816471 C2012CH 1H 080D A TD84N 2R59 DRZ820971 RN73G 2A 20 D TD0804N 3C3, 3C4 DCC850101 GRM42-6CH 050C500PT TE0804N...
Page 222 LT344 MAIN BOARD CH2 FRONT END CH2 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 3IC6 DIC619271 TA 75S558F (TE85L) TE0804L 3R59 DRZ820971 RN73G 2A 20 D TD0804N 3J1A DCN126091 3R60 to 3R62 DRZ832201 RK73H 2A 620 F TD0804N 7093XXP01 PROBUS CONNECTOR 3J1B DCN045681 CONNECTOR BNC-BR-PC-1...
Page 223 LT344 MAIN BOARD CH3 FRONT END CH3 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 4C1, 4C2 DCC816471 C2012CH 1H 080D A TD84N 4IC6 DIC619271 TA 75S558F (TE85L) TE0804L 4C3, 4C4 DCC850101 4J1A DCN126091 GRM42-6CH 050C500PT TE0804N 7093XXP01 PROBUS CONNECTOR DCV819091 TZBX4 Z250BA110 TE1208R...
Page 224 LT344 MAIN BOARD CH3 FRONT END CH4 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 4R59 DRZ820971 RN73G 2A 20 D TD0804N 5C1, 5C2 DCC816471 C2012CH 1H 080D A TD84N 4R60 to 4R62 DRZ832201 RK73H 2A 620 F TD0804N 5C3, 5C4 DCC850101 GRM42-6CH 050C500PT TE0804N...
Page 225 LT344 MAIN BOARD CH4 FRONT END CH4 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 5IC5 DIC483321 74HC595F/AF TE1612B 5R59 DRZ820971 RN73G 2A 20 D TD0804N 5IC6 DIC619271 TA 75S558F (TE85L) TE0804L 5R60 to 5R62 DRZ832201 RK73H 2A 620 F TD0804N 5J1A DCN126091 5R63...
Page 226 LT344 MAIN BOARD EXT TRIGGER EXT TRIGGER CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. DCC816451 C2012CH 1H 060D A TD84N 6J1B DCN045681 CONNECTOR BNC-BR-PC-1 DCC816491 C2012CH 1H 100D A TD84N DCL810831 HK1608 18NJ-T TD0804N 6C3, 6C4 DCC850101 6L2, 6L4 DCL811011 BLM21A121FPT TD0804N...
Page 227 LT344 MAIN BOARD EXT TRIGGER CH1 A/D CNVT 7 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 6R83 DRZ832321 RK73H 2A 2.0K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 6R84 DRZ832301 RK73H 2A 1.6K F TD0804N DCC816641 C2012CH 1H 221J A TD84N 6R85 DDD074121 LP310 1F 202F 302 TE0804N...
Page 228 LT344 MAIN BOARD CH1 A/D CNVT CH2 A/D CNVT 8 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 7R12 DRZ832301 RK73H 2A 1.6K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 7R13 DRZ833061 RK73H 2A 75 F TD0804N DCC816641 C2012CH 1H 221J A TD84N 7R14 DRZ832051 RK73H 2A 150 F TD0804N...
Page 229 LT344 MAIN BOARD CH2 A/D CNVT CH3 A/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 8R11 DRZ832321 RK73H 2A 2.0K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 8R12 DRZ832301 RK73H 2A 1.6K F TD0804N DCC816641 C2012CH 1H 221J A TD84N 8R13 DRZ833061 RK73H 2A 75 F TD0804N...
Page 230 LT344 MAIN BOARD CH3 A/D CNVT CH4 A/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 9R12 DRZ832301 RK73H 2A 1.6K F TD0804N 10C1 DCC810511 C2012F 1H 103Z A TD84N 9R13 DRZ833061 RK73H 2A 75 F TD0804N 10C3 DCC816641 C2012CH 1H 221J A TD84N 9R14...
Page 231 LT344 MAIN BOARD CH4 A/D CNVT TRIG SELECTOR CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 10R10 DRZ832491 RK73H 2A 10K F TD0804N 11C1 DCC810571 C2012F 1H 104Z A TD0804N 10R11 DRZ832321 RK73H 2A 2.0K F TD0804N 11C2 DCC820021 C2012F 1C 105Z A TD84N 10R12...
Page 232 LT344 MAIN BOARD TRIG SELECTOR 400MHZ OSC CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 11R37 DRZ832481 RK73H 2A 9.1K F TD0804N 12C4 DCC810571 C2012F 1H 104Z A TD0804N DRZ833021 RK73H 2A 51 F TD0804N 12C7, 12C8 DCC816521 C2012CH 1H 220J A TD84N 11R38 to 11R41 11R42...
Page 233 LT344 MAIN BOARD TV SYNC SEP TV SYNC SEP CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 13C2 DCC816541 C2012CH 1H 330J A TD84N 13R38, 13R39 DRZ832411 RK73H 2A 4.7K F TD0804N 13C3 DCC820261 C2012F 1C 225Z A TE0804N 13R40 DRZ832331 RK73H 2A 2.2K F TD0804N 13C5...
Page 234 LT344 MAIN BOARD TIME BASE TIME BASE CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 14C8 DCC810571 C2012F 1H 104Z A TD0804N 14R36 DRZ832251 RK73H 2A 1.0K F TD0804N 14C10, 14C21 DCC810511 C2012F 1H 103Z A TD84N DRZ833021 RK73H 2A 51 F TD0804N 14R37 to 14R39 14C22, 14C28 DCC810511 C2012F 1H 103Z A TD84N...
Page 235 LT344 MAIN BOARD T/D CNVT T/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 15C1 DCC810511 C2012F 1H 103Z A TD84N 15R14, 15R15 DRZ832491 RK73H 2A 10K F TD0804N 15C5 DCC810571 C2012F 1H 104Z A TD0804N 15R17 DRZ832251 RK73H 2A 1.0K F TD0804N 15C11...
Page 236 LT344 MAIN BOARD CAL SIGNAL DC GENE 1/2 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 16C3, 16C5 DCC810511 C2012F 1H 103Z A TD84N 17C10, 17C12 DCC810511 C2012F 1H 103Z A TD84N 16C7, 16C10 DCC810511 C2012F 1H 103Z A TD84N 17C13 DCC810511 C2012F 1H 103Z A TD84N 16C12...
Page 237 LT344 MAIN BOARD DC GENE 2/2 MAIN CONT 1/2 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 18C1 DCF810121 ECHU 1C 104J TE0804N 19C10 DCC816641 C2012CH 1H 221J A TD84N 18C2 to 18C7 DCC811111 C2012B 1E 104K A TD84N DCC810571 C2012F 1H 104Z A TD0804N 19C51 to 19C53 18C8...
Page 238 LT344 MAIN BOARD MAIN CONT 2/2 POWER CONNECTOR 21 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 20C3 DCC810511 C2012F 1H 103Z A TD84N 21C1 to 21C4 DCC810511 C2012F 1H 103Z A TD84N 20C4, 20C5 DCC810571 C2012F 1H 104Z A TD0804N 21C10 DCE229221 SME-CE04W 1E 221M TC04R 20C6...
Page 239 LT342 MAIN BOARD CH1 FRONT END CH1 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 2C1, 2C2 DCC816471 C2012CH 1H 080D A TD84N 2IC6 DIC619271 TA 75S558F (TE85L) TE0804L 2C3, 2C4 DCC850101 2J1A DCN126091 GRM42-6CH 050C500PT TE0804N 7093XXP01 PROBUS CONNECTOR DCV819091 TZBX4 Z250BA110 TE1208R...
Page 240 LT342 MAIN BOARD CH1 FRONT END CH2 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 2R60 to 2R62 DRZ832201 RK73H 2A 620 F TD0804N 3C1, 3C2 DCC816471 C2012CH 1H 080D A TD84N 2R63 DRZ820971 RN73G 2A 20 D TD0804N 3C3, 3C4 DCC850101 GRM42-6CH 050C500PT TE0804N...
Page 241 LT342 MAIN BOARD CH2 FRONT END CH2 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 3IC5 DIC483321 74HC595F/AF TE1612B 3R59 DRZ820971 RN73G 2A 20 D TD0804N 3IC6 DIC619271 TA 75S558F (TE85L) TE0804L 3R60 to 3R62 DRZ832201 RK73H 2A 620 F TD0804N 3J1A DCN126091 3R63...
Page 242 LT342 MAIN BOARD EXT TRIGGER EXT TRIGGER CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. DCC816451 C2012CH 1H 060D A TD84N 6J1B DCN045681 CONNECTOR BNC-BR-PC-1 DCC816491 C2012CH 1H 100D A TD84N DCL810831 HK1608 18NJ-T TD0804N 6C3, 6C4 DCC850101 6L2, 6L4 DCL811011 BLM21A121FPT TD0804N...
Page 243 LT342 MAIN BOARD EXT TRIGGER CH1 A/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 6R83 DRZ832321 RK73H 2A 2.0K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 6R84 DRZ832301 RK73H 2A 1.6K F TD0804N DCC816641 C2012CH 1H 221J A TD84N 6R85 DDD074121 LP310 1F 202F 302 TE0804N...
Page 244 LT342 MAIN BOARD CH1 A/D CNVT CH2 A/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 7R12 DRZ832301 RK73H 2A 1.6K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 7R13 DRZ833061 RK73H 2A 75 F TD0804N DCC816641 C2012CH 1H 221J A TD84N 7R14 DRZ832051 RK73H 2A 150 F TD0804N...
Page 245 LT342 MAIN BOARD CH2 A/D CNVT TRIG SELECTOR CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 8R11 DRZ832321 RK73H 2A 2.0K F TD0804N 11C1 DCC810571 C2012F 1H 104Z A TD0804N 8R12 DRZ832301 RK73H 2A 1.6K F TD0804N 11C2 DCC820021 C2012F 1C 105Z A TD84N 8R13...
Page 246 LT342 MAIN BOARD TRIG SELECTOR 400MHZ OSC CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 11R36 DRZ833021 RK73H 2A 51 F TD0804N 12C4 DCC810571 C2012F 1H 104Z A TD0804N 11R37 DRZ832481 RK73H 2A 9.1K F TD0804N DCC816521 C2012CH 1H 220J A TD84N 12C7, 12C8, 12C13 11R38, 11R39 DRZ833021 RK73H 2A 51 F TD0804N...
Page 247 LT342 MAIN BOARD TV SYNC SEP TV SYNC SEP CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 13C2 DCC816541 C2012CH 1H 330J A TD84N 13R38, 13R39 DRZ832411 RK73H 2A 4.7K F TD0804N 13C3 DCC820261 C2012F 1C 225Z A TE0804N 13R40 DRZ832331 RK73H 2A 2.2K F TD0804N 13C5...
Page 248 LT342 MAIN BOARD TIME BASE TIME BASE CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 14C8 DCC810571 C2012F 1H 104Z A TD0804N 14R36 DRZ832251 RK73H 2A 1.0K F TD0804N 14C10, 14C21 DCC810511 C2012F 1H 103Z A TD84N DRZ833021 RK73H 2A 51 F TD0804N 14R37 to 14R39 14C22, 14C28 DCC810511 C2012F 1H 103Z A TD84N...
Page 249 LT342 MAIN BOARD T/D CNVT T/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 15C1 DCC810511 C2012F 1H 103Z A TD84N 15R14, 15R15 DRZ832491 RK73H 2A 10K F TD0804N 15C5 DCC810571 C2012F 1H 104Z A TD0804N 15R17 DRZ832251 RK73H 2A 1.0K F TD0804N 15C11...
Page 250 LT342 MAIN BOARD CAL SIGNAL DC GENE 1/2 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 16C3, 16C5 DCC810511 C2012F 1H 103Z A TD84N 17C10, 17C12 DCC810511 C2012F 1H 103Z A TD84N 16C7, 16C10 DCC810511 C2012F 1H 103Z A TD84N 17C13 DCC810511 C2012F 1H 103Z A TD84N 16C12...
Page 251 LT342 MAIN BOARD DC GENE 2/2 MAIN CONT 1/2 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 18C1 DCF810121 ECHU 1C 104J TE0804N 19C10 DCC816641 C2012CH 1H 221J A TD84N 18C2 to 18C7 DCC811111 C2012B 1E 104K A TD84N DCC810571 C2012F 1H 104Z A TD0804N 19C51 to 19C53 18C8...
Page 252 LT342 MAIN BOARD MAIN CONT 2/2 POWER CONNECTOR 21 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 20C3 DCC810511 C2012F 1H 103Z A TD84N 21C1 to 21C4 DCC810511 C2012F 1H 103Z A TD84N 20C4, 20C5 DCC810571 C2012F 1H 104Z A TD0804N 21C10 DCE229221 SME-CE04W 1E 221M TC04R 20C6...
Page 253 LT224 MAIN BOARD CH1 FRONT END CH1 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 2C1, 2C2 DCC816471 C2012CH 1H 080D A TD84N 2IC5 DIC483321 74HC595F/AF TE1612B 2C3, 2C4 DCC850101 2IC6 DIC619271 TA 75S558F (TE85L) TE0804L GRM42-6CH 050C500PT TE0804N DCV819091 TZBX4 Z250BA110 TE1208R 2J1A...
Page 254 LT224 MAIN BOARD CH1 FRONT END CH2 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 2R60 to 2R62 DRZ832201 RK73H 2A 620 F TD0804N 3C1, 3C2 DCC816471 C2012CH 1H 080D A TD84N 2R63 DRZ820971 RN73G 2A 20 D TD0804N 3C3, 3C4 DCC850101 GRM42-6CH 050C500PT TE0804N...
Page 255 LT224 MAIN BOARD CH2 FRONT END CH2 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 3IC4 DIC631231 3R59 DRZ820971 RN73G 2A 20 D TD0804N HTR420 TRIGGER COMPARATOR 3IC5 DIC483321 74HC595F/AF TE1612B 3R60 to 3R62 DRZ832201 RK73H 2A 620 F TD0804N 3IC6 DIC619271 TA 75S558F (TE85L) TE0804L 3R63...
Page 256 LT224 MAIN BOARD CH3 FRONT END CH3 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 4C1, 4C2 DCC816471 C2012CH 1H 080D A TD84N 4IC4 DIC631231 HTR420 TRIGGER COMPARATOR 4C3, 4C4 DCC850101 4IC5 DIC483321 74HC595F/AF TE1612B GRM42-6CH 050C500PT TE0804N DCV819091 TZBX4 Z250BA110 TE1208R 4IC6...
Page 257 LT224 MAIN BOARD CH3 FRONT END CH4 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 4R58 DRZ832051 RK73H 2A 150 F TD0804N 5C1, 5C2 DCC816471 C2012CH 1H 080D A TD84N 4R59 DRZ820971 RN73G 2A 20 D TD0804N 5C3, 5C4 DCC850101 GRM42-6CH 050C500PT TE0804N...
Page 258 LT224 MAIN BOARD CH4 FRONT END CH4 FRONT END CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 5IC5 DIC483321 74HC595F/AF TE1612B 5R60 to 5R62 DRZ832201 RK73H 2A 620 F TD0804N 5IC6 DIC619271 TA 75S558F (TE85L) TE0804L 5R63 DRZ820971 RN73G 2A 20 D TD0804N 5J1A...
Page 259 LT224 MAIN BOARD EXT TRIGGER EXT TRIGGER CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. DCC816451 C2012CH 1H 060D A TD84N 6J1B DCN045681 CONNECTOR BNC-BR-PC-1 DCC816491 C2012CH 1H 100D A TD84N DCL810831 HK1608 18NJ-T TD0804N 6C3, 6C4 DCC850101 6L2, 6L4 DCL811011 BLM21A121FPT TD0804N...
Page 260 LT224 MAIN BOARD EXT TRIGGER CH1 A/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 6R84 DRZ832301 RK73H 2A 1.6K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 6R85 DDD074121 LP310 1F 202F 302 TE0804N DCC816641 C2012CH 1H 221J A TD84N 6R86 DRZ832491 RK73H 2A 10K F TD0804N...
Page 261 LT224 MAIN BOARD CH1 A/D CNVT CH2 A/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 7R11 DRZ832321 RK73H 2A 2.0K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 7R12 DRZ832301 RK73H 2A 1.6K F TD0804N DCC816641 C2012CH 1H 221J A TD84N 7R13 DRZ833061 RK73H 2A 75 F TD0804N...
Page 262 LT224 MAIN BOARD CH2 A/D CNVT CH3 A/D CNVT 9 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 8R12 DRZ832301 RK73H 2A 1.6K F TD0804N DCC810511 C2012F 1H 103Z A TD84N 8R13 DRZ833061 RK73H 2A 75 F TD0804N DCC816641 C2012CH 1H 221J A TD84N 8R14 DRZ832051 RK73H 2A 150 F TD0804N...
Page 263 LT224 MAIN BOARD CH3 A/D CNVT CH4 A/D CNVT 10 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 9R11 DRZ832321 RK73H 2A 2.0K F TD0804N 10C1 DCC810511 C2012F 1H 103Z A TD84N 9R12 DRZ832301 RK73H 2A 1.6K F TD0804N 10C3 DCC816641 C2012CH 1H 221J A TD84N 9R13...
Page 264 LT224 MAIN BOARD CH4 A/D CNVT TRIG SELECTOR CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 10R12 DRZ832301 RK73H 2A 1.6K F TD0804N 11C1 DCC810571 C2012F 1H 104Z A TD0804N 10R13 DRZ833061 RK73H 2A 75 F TD0804N 11C2 DCC820021 C2012F 1C 105Z A TD84N 10R14...
Page 265 LT224 MAIN BOARD TRIG SELECTOR 400MHZ OSC CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 11R36 DRZ833021 RK73H 2A 51 F TD0804N 12C4 DCC810571 C2012F 1H 104Z A TD0804N 11R37 DRZ832481 RK73H 2A 9.1K F TD0804N 12C7, 12C8 DCC816521 C2012CH 1H 220J A TD84N DRZ833021 RK73H 2A 51 F TD0804N...
Page 266 LT224 MAIN BOARD TV SYNC SEP TV SYNC SEP CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 13C2 DCC816541 C2012CH 1H 330J A TD84N 13R37 DRZ832331 RK73H 2A 2.2K F TD0804N 13C3 DCC820261 C2012F 1C 225Z A TE0804N 13R38, 13R39 DRZ832411 RK73H 2A 4.7K F TD0804N 13C5 DCC810511 C2012F 1H 103Z A TD84N...
Page 267 LT224 MAIN BOARD TIME BASE TIME BASE CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 14C8 DCC810571 C2012F 1H 104Z A TD0804N DRZ833021 RK73H 2A 51 F TD0804N 14R37 to 14R39 14C10, 14C21 DCC810511 C2012F 1H 103Z A TD84N 14R40 DRZ832211 RK73H 2A 680 F TD0804N 14C22, 14C28 DCC810511 C2012F 1H 103Z A TD84N...
Page 268 LT224 MAIN BOARD T/D CNVT T/D CNVT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 15C1 DCC810511 C2012F 1H 103Z A TD84N 15R13 DRZ832411 RK73H 2A 4.7K F TD0804N 15C5 DCC810571 C2012F 1H 104Z A TD0804N 15R14, 15R15 DRZ832491 RK73H 2A 10K F TD0804N 15C11 DCC816801 C2012CH 1H 102J A TD84N...
Page 269 LT224 MAIN BOARD CAL SIGNAL DC GENE 1/2 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 16C3, 16C5 DCC810511 C2012F 1H 103Z A TD84N DCC810511 C2012F 1H 103Z A TD84N 17C10, 17C12, 17C13 16C7, 16C10 DCC810511 C2012F 1H 103Z A TD84N 17C16 DCC816601 C2012CH 1H 101J A TD84N 16C12...
Page 270 LT224 MAIN BOARD DC GENE 2/2 MAIN CONT 1/2 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 18C1 DCF810121 ECHU 1C 104J TE0804N 19C10 DCC816641 C2012CH 1H 221J A TD84N 18C2 to 18C7 DCC811111 C2012B 1E 104K A TD84N DCC810571 C2012F 1H 104Z A TD0804N 19C51 to 19C53 18C8...
Page 271 LT224 MAIN BOARD MAIN CONT 2/2 POWER CONNECTOR 21 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 20C3 DCC810511 C2012F 1H 103Z A TD84N 21C1 to 21C4 DCC810511 C2012F 1H 103Z A TD84N 20C4, 20C5 DCC810571 C2012F 1H 104Z A TD0804N 21C10 DCE229221 SME-CE04W 1E 221M TC04R 20C6...
Page 272 LT34X CPU & PANEL BOARD DRAM CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 31C1 to 31C3 DCC810571 C2012F 1H 104Z A TD0804N 32IC7, 32IC8 DCN997011 SIMM 52706-7220 31C4, 31C5 DCE219051 SME-CE04W 1A 101M TC04R DIC199381 74F157AF 32IC9 to 32IC11 31C6, 31C76 DCC810571 C2012F 1H 104Z A TD0804N...
Page 273 LT34X CPU & PANEL BUS CONTROL VGA CONTROL CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 33IC15 DIC560361 MC 68150FN33 34C8 to 34C10 DCC816641 C2012CH 1H 221J A TD84N 33IC16 DIC556321 PD 71071GC-3B6 (NEC) 34C11 DCE219051 SME-CE04W 1A 101M TC04R 33IC17 DIC471781 34C12...
Page 274 LT34X CPU & PANEL BOARD 32BIT I/O MAIN BOARD I/F CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. DCC816761 C2012CH 1H 471J A TD84N 36C30, 36C31 DCC810571 C2012F 1H 104Z A TD0804N 35C19 to 35C22 35C23, 35C24 DCC816491 C2012CH 1H 100D A TD84N 36C34 DCE219051 SME-CE04W 1A 101M TC04R 35C25...
Page 275 LT34X CPU & PANEL 8BIT I/O EXTERNAL I/F 38 CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 37BT1 DES011201 CR2354-1HF 38C75 DCC816601 C2012CH 1H 101J A TD84N 37C67, 37C68 DCC810571 C2012F 1H 104Z A TD0804N 38IC54 DIC196181 SN 75160AN/BN 37IC42 DIC557111...
Page 276 PRINTER BOARD PRINTER PRINTER CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 43C1 to 43C9 DCC816601 C2012CH 1H 101J A TD84N 43R29, 43R30 DRD137031 PSS1/4S 3.0ΩJ TA21N 43C10 DCC820021 C2012F 1C 105Z A TD84N 43R31 DRZ832251 RK73H 2A 1.0KΩF TD0804N 43C11, 43C12 DCC816521 C2012CH 1H 220J A TD84N 43RL1 DKD016271 JV-5S-KT...
Page 277 POWER SUPPLY POWER SUPPLY POWER SUPPLY CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 50C1 DCF161711 ECQ-U2A 224MT 50C76 DCF168461 ECQ-E4 224KF 50C2 DCC140221 DE1307-1 E 472M-KH 50C77 DCC169081 DE0705-979R 221K 1K TD04N 50C3, 50C4 DCF161711 ECQ-U2A 224MT 50C78 DCC140211 DE1007-1 E 222M-KH 50C5, 50C6...
Page 278 POWER SUPPLY POWER SUPPLY POWER SUPPLY CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 50C148 DCE948111 LXV 63VB-47M H12 TC04R 50D33 DDD038831 RD18ESB/HZS18NB TA21R 50C149 DCE948141 LXZ 50VB-47M F11 TC04R 50D34 DDD019071 1SS 120 TA21R DCE948141 LXZ 50VB-47M F11 TC04R 50D35 DDD038731 RD6.8ESB/HZS6.8NB TA21R 50C150, 50C151...
Page 279 POWER SUPPLY POWER SUPPLY POWER SUPPLY CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 50Q12 DTR225011 2SJ 143 50R72 DRE137961 EF1/4S 2.2KΩF TA21N 50Q13 DTR119011 2SA 1015Y TPER1 50R73 DRV419171 GF06UT2/CT-6TV00 500Ω (T) 50Q14 DTR215791 2SK 2287 50R74 DRE137951 EF1/4S 2.0KΩF TA21N 50Q15...
Page 280 POWER SUPPLY POWER SUPPLY PFC UNIT CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 50R147 DRE137951 EF1/4S 2.0KΩF TA21N 51C2 DCF121601 MF-3S 1H 102J TC04N 50R148 DRE138121 EF1/4S 10KΩF TA21N 51C3 DCF122131 MMTS 1H 104J TD04N 50R149 DRE137401 EF1/4S 10ΩF TA21N 51CN1...
Page 281 PCMCIA INTERFACE /PANEL BOARD/LCD CONNECTOR PCMCIA LCD CONNECTOR CIRCUIT IWATSU DESCRIPTION CIRCUIT IWATSU DESCRIPTION REFERENCE PART NO. REFERENCE PART NO. 39C69 DCE219051 42C1 DCC810571 C2012F 1E 104Z A TD84N SME-CE04W 1A 101M TC04R 39CN1 DCN126121 42C2 to 42C4 DCC816501 C2012CH 1H 120J A TD84N PCT-ST1-R-TF(KFA391429-A) 39IC65 DIC499921 74HC175F/AF TE1612B...
Page 282 POWER SUPPLY (50) 1/7 Schematics, Layouts, Parts List 8-85 www.valuetronics.com...
Page 283 POWER SUPPLY (50) 2/7 Schematics, Layouts, Parts List 8-87 www.valuetronics.com...
Page 284 POWER SUPPLY (50) 3/7 Schematics, Layouts, Parts List 8-89 www.valuetronics.com...
Page 285 POWER SUPPLY (50) 4/7 Schematics, Layouts, Parts List 8-91 www.valuetronics.com...
Page 286 POWER SUPPLY (50) 5/7 Schematics, Layouts, Parts List 8-93 www.valuetronics.com...
Page 287 POWER SUPPLY (50) 6/7 Schematics, Layouts, Parts List 8-95 www.valuetronics.com...
Page 288 POWER SUPPLY (50) 7/7 Schematics, Layouts, Parts List 8-97 www.valuetronics.com...
Page 289 POWER BOARD Schematics, Layouts, Parts List 8-99 www.valuetronics.com...
Page 290: Appendix A: Replaceable Parts
Appendix A: Replaceable Parts To order parts, contact your local LeCroy service office. A list of the service centers is given in section 2 of this manual. For boards, you can either order a new board or an exchange board. Exchange assemblies are factory repaired, inspected, tested and calibrated. If you order an exchange card, you must return the defective part.
Page 291 Mechanical Parts (con’t) Part Number Code No. Description Manufacturer Cage Code K-KBA784911 KBA784911 SIDE FRAME L IWATSU S5180 K-KBA785011 KBA785011 SIDE FRAME R IWATSU S5180 K-KBA785211 KBA785211 FDD SUPPORT PLATE IWATSU S5180 K-KCM124211 KCM138221 CORD HOOK 78 UL-I IWATSU S5180 K-KCM131511 KCM131511 TILT STAND BASE IWATSU...
Page 292 Mechanical Parts (cont’) Part Number Code No. Description Manufacturer Cage Code P-MKB130062 MKB130062 SCREW KB(+)3X6S(NIP) IWATSU S5180 P-MKB130062 MKB130082 SCREW KB(+)3X8S(NIP) IWATSU S5180 P-MKP120041 MKD130061 SCREW KD(+)3X6S IWATSU S5180 P-MSM126061 MSM140101 SCREW SM1-4X10 IWATSU S5180 P-MSQ903511 MSQ903511 SCREW PT KB(+)2.5X8S IWATSU S5180 P-MSQ903521...
Page 293 DCN129381 FFC CONNECTOR 26PIN MOLEX S5406 STRAIGHT 53258-0610 DCN126021 CONNECTOR 6pin STRAIGHT MOLEX S5406 53258-0710 DCN126081 CONNECTOR 7pin STRAIGHT MOLEX S5406 571ABN-10.0000 DHF060191 CRYSTAL 10MHz SEIKO PRECISION 0BDG7 709360371 HEAT MHN001281 HEAT SINK(MCG426) LECROY 55716 SINK(MCG426) A-4 Replaceable Parts www.valuetronics.com...
Page 294 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code 7093XXP01 PROBUS DCN126091 CONNECTOR 6PIN (PROBUS) LECROY 55716 CONNECTOR 7093XXP41 PROBE HOLDER MZT007841 7093XXP41 PROBE HOLDER LECROY 55716 7093XXP91 RING CONTACT MZT007851 7093XXP91 RING CONTACT LECROY 55716 74 VHC 138 SJ...
Page 295 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code DAC 712UK DIC645151 IC 16BIT D/A CONVERTER S5180 DS 1620S DIC470461 IC DIGITAL THERMOMETER DALLAS U7723 DTA114YK DTR890471 TRANSISTOR PNP WITH ROHM 0UST1 RESISTOR DTC114EK DTR890551 TRANSISTOR NPN WITH ROHM 0UST1 RESISTOR...
Page 296 DCC850011 CAP CERA CHIP 2200pF 500V MURATA OBCD9 GRM 42-6B 106K 6.3 PT DCC819091 CAP CERA CHIP 10uF MURATA OBCD9 HAD626 DIC642371 IC 500MS/S ADC LECROY 55716 HFE428 DIC614891 IC 1GHZ FRONT END LECROY 55716 HK1608 10NJ DCL810811 CHIP INDUCTOR 10nH...
Page 297 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code IMX3 DTR890841 TRANSISTOR NPN PAIR ROHM 0UST1 IMX5 DTR890761 TRANSISTOR NPN PAIR ROHM 0UST1 IMZ1 DTR890861 TRANSISTOR NPN/PNP PAIR ROHM 0UST1 K-KBA782611 KBA782611 ATT SHIELD PLATE C IWATSU S5180 K-KBA782721 KBA782721 ATT SHIELD PLATE D...
Page 298 OCJC4 MC 10H117M DIC322921 IC DUAL OR-AND/OR-AND- MOTOROLA OCJC4 INVERT GATE MCG426 DIC891031 IC CLOCK GENERATOR LECROY 55716 MCR 03 EZH J 000E DRZ831801 CHIP JUMPER ROHM 0UST1 MCR 10 EZH J 000E DRZ831501 CHIP JUMPER ROHM 0UST1 MCR 10 EZH J 240E...
Page 299 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code P-KBA782311 KBA782311 HEAT SINK CLAMP IWATSU S5180 P-KBA782521 KBA782521 ATT SHIELD PLATE B IWATSU S5180 P-KSR010411 KSR010411 GROUND SPRING IWATSU S5180 P-MKB130062 MKB130082 KB(+)3X8S(NIP) IWATSU S5180 P-MSQ903521 MSQ903531 SCREW KB(+)2.5X6S IWATSU S5180 RAC16 4D 101J A...
Page 300 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code RMC 1/10 K 162 F TP DRZ832301 RES CHIP 1% 1.6k KAMAYA S4553 RMC 1/10 K 180 F TP DRZ833491 RES CHIP 1% 18 OHM KAMAYA S4553 RMC 1/10 K 181 F TP DRZ832071 RES CHIP 1% 180 OHM KAMAYA S4553...
Page 301 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code RMC 1/10 K 390 F TP DRZ833571 RES CHIP 1% 39 OHM KAMAYA S4553 RMC 1/10 K 391 F TP DRZ832151 RES CHIP 1% 390 OHM KAMAYA S4553 RMC 1/10 K 392 F TP DRZ832391 RES CHIP 1% 3.9k KAMAYA...
Page 302 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code RMC 1/10 K 823 F TP DRZ832711 RES CHIP 1% 82k KAMAYA S4553 RMC 1/10 K 824 F TP DRZ832951 RES CHIP 1% 820k KAMAYA S4553 RMC 1/10 K 911 F TP DRZ832241 RES CHIP 1% 910 OHM KAMAYA S4553...
Page 303 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code RR1220P-682-D DRZ820581 RES CHIP 0.5% 6.8k SUSUMU S5180 SCREW M2.5X6BLK MSQ903501 SCREW M2.5X6BLK LECROY 55716 S-DIC471841 DIC471841 PROGRAMMED GAL IWATSU S5180 K0315ACQ S-DIC471852 DIC471852 PROGRAMMED GAL IWATSU S5180...
Page 304 LT342 Main Board (con’t) Part Number Code No. Description Manufacturer Cage Code TA 78L05F DIC659791 IC VOLTAGE REGULATOR TOSHIBA S4901 TC 4051BF DIC483021 IC 8-INPUT ANALOG TOSHIBA S4901 MULTIPLEXER TC 4W53F DIC889161 IC ANALOG MULTIPLEXER TOSHIBA S4901 TC 7SU04F DIC889101 IC INVERTER TOSHIBA S4901...
Page 305 Part Number Code No. Description Manufacturer Cage Code 10EX 29.5X29.5-1.5PIN MHN001291 Heatsink (29.5mmx29.5mm) THERMAL S5180 COMPONENT 17HE-R13150-73HC1 DCN026621 VGA connector (15pin) 0XNG8 17LE-13250-27(D4CH) DCN126041 D-SUB 25pin connector 0XNG8 17LE-23090-27(D4CH) DCN126051 D-SUB 9 pin connector 0XNG8 2SK 2287 DTR215791 POWER MOSFET N-channel SHINDENGEN S5405 5267-05A...
Page 306 CPU (con’t) Part Number Code No. Description Manufacturer Cage Code CR2354-1HF DES011201 Lithium Battery Cell (500mAh) Panasonic 0YKR3 DS 14C232CM DIC484981 IC EIA-232 Dual DRV/RCV S5180 DS 1689S DIC471911 IC RTC DALLAS U7723 DTC143TK DTR890521 Transistor NPN with register ROHM 0UST1 F65545B2-5 DIC471751...
Page 307 CPU (con’t) Part Number Code No. Description Manufacturer Cage Code MC74F157AM DIC199381 IC Quad 2 to 1 line data Motorola OCJC4 selectors MC74F74M DIC199301 IC Dual D-F/F Motorola OCJC4 MCR 10 EZH J 000 E DRZ831501 Chip Jumper 0 OHM ROHM 0UST1 MX-38T 32.768KHZ...
Page 308 CPU (con’t) Part Number Code No. Description Manufacturer Cage Code RMC 1/10 K 27 ) 73 DRZ832111 RES CHIP 1% 270 OHM KAMAYA S4553 RMC 1/10 K 330 F TP DRZ833551 RES CHIP 1% 33 OHM KAMAYA S4553 RMC 1/10 K 33 ) 73 DRZ832131 RES CHIP 1% 330 OHM KAMAYA S4553...
Page 309 CPU (con’t) Part Number Code No. Description Manufacturer Cage Code TC74VHCT04AF DIC471621 IC Hex Inverter TOSHIBA S4901 TC74VHCT244AF DIC484691 IC Octal Bus Buffers TOSHIBA S4901 TC74VHCT245AF DIC484681 IC Octal Bus Transceivers TOSHIBA S4901 uPD 71059GB-10-3B4 DIC557111 IC interrupt controller 0CMK7 uPD 71071GC-3B6 DIC556321 IC DMA controller...
Page 310 KAMAYA S4553 RMC 1/10 K 393 F TP DRZ832631 RES CHIP 1% 39K OHM KAMAYA S4553 S-DIC891051 DIC891051 IC FRONT PANEL control Lecroy 55716 (MFP414) SN 74HC 04 NS DIC499321 IC Hex Inverter OBBO6 SN 74HC 74 NS DIC499371 IC Dual D-F/F...
Page 311 Printer (con’t) Part Number Code No. Description Manufacturer Cage Code DTA114EK DTR890431 Transistor PNP with register ROHM 0UST1 DTC114EK DTR890551 Transistor NPN with register ROHM 0UST1 FTP-642MCL001 DZB992361 Printer mechanism Fujitsu 61271 GRM 40 CH 101J 50 PT DCC816601 CAP CERA CHIP 100pF MURATA OBCD9 GRM 40 CH 103Z 50 PT...
Page 312 Printer (con’t) Part Number Code No. Description Manufacturer Cage Code RMC 1/10 K 274 F TP DRZ832831 RES CHIP 1% 270k OHM KAMAYA S4553 RMC 1/10 K 302 F TP DRZ832361 RES CHIP 1% 3.0k OHM KAMAYA S4553 RMC 1/10 K 330 F TP DRZ833551 RES CHIP 1% 33 OHM KAMAYA S4553...
Page 313 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code 5267-07A DCN990911 CONN 07 PIN MOLEX S5406 5268-02A DCN990821 CONN 02 PIN MOLEX S5406 53258-0310 DCN125991 CONN 03 PIN MOLEX S5406 53258-0510 DCN126011 CONN 05 PIN MOLEX S5406 53258-0610 DCN126021 CONN 06 PIN MOLEX...
Page 314 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code AF1/4S 1.0K F DRE137881 RES 1% 1.0K OHMS TAMA 0XN17 AF1/4S 1.0M DRE138601 RES 1% 1.0M OHMS TAMA 0XN17 AF1/4S 1.2K DRE137901 RES 1% 1.2K OHMS TAMA 0XN17 AF1/4S 1.5K F DRE137921 RES 1% 1.5K OHMS TAMA...
Page 315 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code AF1/4S 91K DRE138351 RES 1% 91K OHMS TAMA 0XN17 AF1/4S10 F DRE137401 RES 1% 10 OHMS TAMA 0XN17 AP-320(V) BLACK DCN013161 AC INLET 3PIN S5180 BL02RN2-R62 DCL119361 INDUCTOR TOKIN 0B3G8 BPR 26 0.1 K DRE960191...
Page 316 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code ECQ-E4 224K DCF168461 CAP FILM 10% 0.22UF MATSUSHITA S5441 ECQ-U2A 224MT DCF161711 CAP FILM 20% 0.22UF UL MATSUSHITA S5441 EDGING CE-106 MBU000131 EDGING COMMERCIA ET2835-042 DCL170231 INDUCTOR 8MH X2 TOKIN 0B3G8 FET CLAMP...
Page 317 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code LXV 25VB-2200M K40MC DCE926401 CAP CHEMICAL 25V2200uF Nippon Chemi-con S4217 LXV 35VB-1200M K35MC DCE935351 CAP CHEMICAL 35V1200uF Nippon Chemi-con S4217 LXV 50VB-220M J25MC DCE945731 CAP CHEMICAL 50V220CuF Nippon Chemi-con S4217 LXV 63VB-180M J30MC DCE945701...
Page 318 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code PFC BOARD UL-M KPN370031 PRINT CIRCUIT BOARD S5180 POWER BOARD UL-M KPN374431 PRINT CIRCUIT BOARD DAISHO S5180 POWER FRAME KBA783811 POWER FRAME IWATSU S5180 POWER HS PLATE A KBA783021 POWER HS PLATE A IWATSU S5180...
Page 319 Power Supply (con’t) Part Number Code No. Description Manufacturer Cage Code RSS1 0.22 J DRS320011 RES 5% 1W 0.22 OHMS 59124 RSS1 4.7K J DRS320531 RES 5% 1W 4.7K OHMS 59124 RSS2 10 J DRS331071 RES 5% 2W 10 OHMS 59124 RSS2 47 J...

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Lt342 Lt322 Lt344 Lt224 Lt342l Lt344l