NEC DTE-29U1TH Service Manual
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NEC DTE-29U1TH Service Manual

68 cm stereo color television
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S/M No. : TCP785FEF0

Service manual

68 Cm STEREO Color Television
CHASSIS : CP-785F
MODEL : DTE-29U1TH
PF-68T32
NEC Corporation
Nov. 2003

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Summary of Contents for NEC DTE-29U1TH

  • Page 1: Service Manual

    S/M No. : TCP785FEF0 Service manual 68 Cm STEREO Color Television CHASSIS : CP-785F MODEL : DTE-29U1TH PF-68T32 NEC Corporation Nov. 2003...

  • Page 2: Table Of Contents

    Contents 1 - Main features 1-1 Specifications 1-2 External Terminals 1-3 Channel table 2 - Safety instruction 3 - Alignment instructions 3-1 Microcontroller configuration : Service mode 3-2 Microcnotroller configuration : Option 3-3 TV set Alignment 4 - IC description 4-1 TDA936x TV signal processor - TXT with embedded -Controller 4-2 MSP341x Multistandard Sound Processor 4-3 TDA894x J Stereo Audio Amplifier...

  • Page 3: Main Features

    Service Manual CP-785F 1 - Main Features 1-1 Specifications TV standard PAL, - B/G, H, NTSC(AV Only) Sound system NICAM B/G FM 2Carrier B/G Power consumption 116W approx. Sound Output Power 5W x 5W (at 60% mod, 10% THD) Speaker 7W 8 ohm x 2 Teletext system 10 pages memory FASTEXT (FLOF or TOP) : Option...
  • Page 4 Service Manual CP-785F 1-2-3 MONITOR OUTPUT & DVD INPUT(THE REAR SIDE) Signal Matching value DVD Cb-in 0.7Vpp +/- 3dB, Impedence 75ohm DVD Cr-in 0.7Vpp +/- 3dB, Impedence 75ohm DVD Y-in 1Vpp +/- 3dB, Impedence 75ohm DVD Audio Left 0.5 Vrms, Impedance > 10 kohm DVD Audio Right 0.5 Vrms, Impedance >...

  • Page 5: Channel Table

    Service Manual CP-785F 1-3 Channel table FREQUENCY TABLE CP-785F AUSTRALIA N/Z land 46.25 57.25 64.25 86.25 95.25 102.25 138.25 175.25 182.25 189.25 196.25 209.25 216.75 45.25 55.25 62.25 203.25 210.25 217.25 471.25 479.25 487.25 495.25 503.25 511.25 519.25 527.25 534.25 541.25 548.25 555.25...
  • Page 6 Service Manual CP-785F AUSTRALIA N/Z land 631.25 638.25 645.25 652.25 659.25 666.25 673.25 680.25 687.25 694.25 701.25 708.25 715.25 722.25 729.25 736.25 743.25 750.25 757.25 764.25 771.25 779.25 786.25 793.25 800.25 807.25 814.25 105.25 112.25 119.25 126.25 133.25 140.25 147.25 154.25 161.25 168.25...
  • Page 7 Service Manual CP-785F AUSTRALIA N/Z land 238.25 245.25 252.25 259.25 266.25 273.25 280.25 287.25 294.25 303.25 311.25 319.25 327.25 335.25 343.25 351.25 359.25 367.25 375.25 383.25 391.25 399.25 407.25 415.25 423.25 431.25 439.25 447.25 455.25 463.25...

  • Page 8: Safety Instruction

    Service Manual CP-785F 2 - Safety instruction WARNING: Only competent service personnel may carry out work involving the testing or repair of this equipment. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 28~30 KV at max beam current.

  • Page 9: Alignment Instructions

    In Service Mode press OK to stop the microcontroller i.e. the I2C bus is free and the set can be controlled by external equipment. Press OK again to allow the microcontroller to control the set again. 3-2 Microcontroller configuration : Option BARE DTE-29U1TH Section ITEMS REMARK...
  • Page 10 Service Manual CP-785A...

  • Page 11: Tv Set Alignment

    Service Manual CP-785F 3-3 TV set Alignment 3-3-1 - G2 alignment - TV in AV mode without video signal Black screen. - TV preset with WP Red, WP Green and WP Blue equal to 32. - TV preset with Black R, Black G equal to 32. - Set TV in NORMAL I mode - Adjust screen volume ( on FBT ) such that the highest cathod cut-off voltage measured on CRT board, is V cut off...
  • Page 12 Service Manual CP-785F H. Bow Up Corner H.Width Dw Corner 3-3-7 - AGC - Adjust the antenna signal level at 68 dBV 2 (UHF - CH25) - Set RF AGC to 0. - Increase RF AGC level and stop when the level on pin 6 of TDA936x goes below 2.5 Vdc -11-...

  • Page 13: Ic Description

    - TDA936x : TEXT Available CHASSIS(MODELS) IC MARKING TEXT TV STANDARD CP-785F TDA9365 10 PAGE TEXT (DTE-29U1TH) (DW9365/N2) (Pan-Eur opeun) PLA/SECAM (PF-68T32) (DW9365/CH3) TV-signal Processor Multi-standard vision IF circuit with alignment-free PLL demodulator Internal (switchable) time-constant for the IF-AGC circuit Source selection between ’Internal’...
  • Page 14 Service Manual CP-785F -Controller 80C51 -controller core standard instruction set and timing 1 s machine cycle 32 - 128Kx8-bit late programmed ROM 3 - 12Kx8-bit Auxiliary RAM (shared with Display and Acquisition) Interrupt controller for individual enable/disable with two level priority Two 16-bit Timer/Counter registers WatchDog timer Auxiliary RAM page pointer...
  • Page 15 Service Manual CP-785F Contrast reduction of defined area Cursor Special Graphics Characters with two planes, allowing four colours per character 32 software redefinable On-Screen display characters 4 WST Character sets (GO/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic) G1 Mosaic graphics, Limited G3 Line drawing characters WST Character sets and Closed Caption Character set in single device Data Capture The Data Capture section takes in the analogue Composite Vid o and Blanking Signal (CVBS),...
  • Page 16 Service Manual CP-785F AUDEXT (20) SIFIN QSSOUT/AMOUT AMOUT RESET LED OUT (2x) 10/11 VST OUT ADC IN (4x) I/O PORTS (4x) 1+62-64 -15-...
  • Page 17 Service Manual CP-785F PINNING SYMBOL DESCRIPTION n.u. Port 1.3 Not used. I2C bus clock line I2C Data line TV, AV1:High DVD, AV2:Low Port 3.0 : Over Current Protection RF AGC in ADC 1 : For factory use only ( High impedance ) Key-in ADC 2 : local key input ( High impedance ) S/W1...
  • Page 18 Service Manual CP-785F SYMBOL DESCRIPTION INSSW2 2nd RGB insertion input DVD-Cr DVD-Y B2IN DVD-Cb BCLIN beam current limiter input BLKIN black current input RED Output GREEN Output BLUE Output VDDA analog supply of Teletext decoder and digital supply of TV-Processor (3.3V) OTP programming supply VDDC digital supply to core (3.3V)
  • Page 19 Service Manual CP-785F P1.3/T1 P1.2/INT0 P1.6/SCL P1.1/T0 P1.7/SDA P1.0/INT1 P2.0/TPMW VDDP P3.0/ADC0 RESET P3.1/ADC1 XTALOUT P3.2/ADC2 XTALIN P3.3/ADC3 OSCGND VSSC/P VDDC P0.5 P0.6 VDDA VSSA SECPLL DECDIG BLKIN PH2LF BCLIN PH1LF B2/UIN GND3 G2/YIN DECBG R2/VIN AVL/EWD INSSW2 VERB AUDOUT/AMOUT VERA CHROMA IFIN1...

  • Page 20: Msp341X Multistandard Sound Processor

    Service Manual CP-785F 4-2 MSP341x Multistandard Sound Processor The MSP341x is designed as a single-chip Multistandard Sound Processor for applications in analogue and digital TV sets, video recorders, and PC cards. MSP 341x features - sound IF input - No external filters required - Stereo baseband input via integrated AD converters - Two pairs of DA converters - Two carrier FM or NICAM processing...
  • Page 21 Service Manual CP-785F DSP-Section (Audio Baseband Processing) - flexible selection of audio sources to be processed - performance of terrestrial de-emphasise systems (FM, NICAM) - digitally performed FM-identification decoding and de-matrixing - digital baseband processing: volume, bass, treble - simple controlling of volume, bass, treble Analogue Section - two selectable analogue pairs of audio baseband input (= two SCART inputs) input level: <2 V RMS, input impedance: >25 k‰...
  • Page 22 Service Manual CP-785F TV standards TVsystem Position of sound carrier(MHz) Sound modulation Color system Remark 5.5 / 5.7421875 FM Stereo Applied 5.5 / 5.85 FM-Mono / NICAM Applied 6.5 / 5.85 AM - Mono / NICAM SECAM-L 6.0 / 6.552 FM-Mono / NICAM 6.5 / 6.2578125 D/K1 FM Stereo...
  • Page 23 Service Manual CP-785F Pin No. Pin Name Type Short description Test pin Test pin DVSUP Digital power supply +5V DVSS Digital Ground Not Connected Not Connected Not Connected Not Connected RESETQ Power-On-reset Not Connected Not Connected VREF2 Reference ground 2 high voltage part DACM_R Loudspeaker out Right DACM_L...

  • Page 24: Tda894X J Stereo Audio Amplifier

    Service Manual CP-785F 4-3 TDA894xJ family Stereo Audio Amplifier The TDA8946J is a dua-channel audio power amplifier with an output power of 2 x 7W at an 8 ohm load and a 12 V supply. The circuit contains two Bridges Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic.

  • Page 25: Tda835Xj Vertical Amplifier

    Service Manual CP-785F V CC1 V CC2 OUT1- IN1- IN1+ OUT1+ TDA8946J OUT2- IN2- IN2+ OUT2+ V CC STANDBY/ MODE MUTE LOGIC SHORT CIRCUIT TEMPERATURE PROTECTION MBK933 GND1 GND2 4-4 TDA835xJ Vertical Amplifier The TDA835xJ are power circuit for use in 90¡ and 110¡ colour deflection systems for field frequencies of 25 to 200Hz and 16/9 picture tubes.
  • Page 26 Service Manual CP-785F 4-4-1 TDA8358J i(pos) An East-West output stage is provided that is able to sink i(neg) current from the diode modulator circuit. Features : Few external components Highly efficient fully DC-coupled vertical output bridge circuit Short rise and fall time of the vertical flyback switch GND v TDA8358J Guard circuit...

  • Page 27: Tda6107Jf

    Service Manual CP-785F 4-5 TDA6107JF The TDA6107JF includes three video output amplifiers in one plastic DIL-Bent-SIL 9-pin medium power package, using high voltage DMOS technology, and is intended to drive the three cathodes of a colour CRT directly. To obtain maximum performance, the amplifier should be used with black-current control.

  • Page 28: 24C08 8 Kbit Eeprom

    Service Manual CP-785F MIRROR 1 MIRROR 5 TDA6107Q CASCODE 1 3x 3 x MIRROR 4 oc(3), 9,8,7 CURRENT oc(2), SOURCE oc(1) THERMAL PROTECTION DIFFERENTIAL REFERENCE CIRCUIT STAGE i(1), 1,2,3 MIRROR 3 o(m) i(2), i(3) CASCODE 2 MIRROR 2 MGK278 4-6 24C08 8 Kbit EEPROM features : 8 Kbit serial I2C bus EEPROM Single supply voltage : 4.5 V to 5.5 V...

  • Page 29: Str-F665X

    Service Manual CP-785F 4-7 STR - F665X 4-7-1 General description The STR-F665X is an hybrid IC with a build-in MOSFET and control IC, designed for flyback converter type switch mode power supply applications. 4-7-2 Features Small SIP fully isolated molded 5 pins package Many protection functions : * Pulse-by-pulse overcurrent protection (OCP) * Overvoltage protection with latch mode (OVP)
  • Page 30 Service Manual CP-785F 4-7-4 Pins description name symbol description Overcurrent / feedback O.C.P./ F.B. Input of overcurrent detection signal and feedback signal Source MOSFET source Drain MOSFET drain Supply Input of power supply for control circuit Ground Ground 4-7-5 Control part electrical characteristics IC pins symbol rating...

  • Page 31: Circuit Description

    Service Manual CP-785F 5 - Circuit description 5-1 Block diagram -30-...
  • Page 32 Service Manual CP-785F FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR Vision IF amplifier The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely alignment-free. The VCO of the PLL circuit is internal and the frequency is fixed to the required value by using the clock frequency of the -Controller/Teletext decoder as a reference.
  • Page 33 Service Manual CP-785F In the TDA936x series, the following geometry parameters can be adjusted for all picture tubes Horizontal shift Vertical amplitude Vertical slope S-correction Vertical shift The types which are intended to be used in combination with 110¡ picture tubes have an East- West control circuit.
  • Page 34 Service Manual CP-785F the desired free-running frequency and the bandgap reference to obtain the correct absolute value of the output signal. The VCO of the PLL is calibrated during each vertical blanking period, when the IC is in search or SECAM mode. The base-band delay line (TDA 4665 function) is integrated.
  • Page 35 Service Manual CP-785F 5-2 IF The TDA936x has an alignment free IF PLL demodulator. The fully integrated oscillator is automatically calibrated, using the 12 Mhz crystal as a frequency reference. The IF frequency is simply set in TV-Processor by I2C bus. The AFC information is available via I2C bus from the TV-Processor status bytes.

  • Page 36: Source Switching

    Service Manual CP-785F 5-3 Source switching The TDA936x has only one external video input, the external video switching circuit made with IA01(Video Switching IC)allows 3 external video signal inputs. The switching command can be the -Controller pin 8 and pin 4 when the software takes control of the video source. The -Controller pin 8 and pin 4 is automatically configured by the controlling software (See table below).

  • Page 37: Sound Processing

    Service Manual CP-785F High impedance This mode can be used for input only operation of the port. Special port for LED Pin 10 and 11 have the same functionality as the general I/O pins but in addition, their current source and sink capacity is 8 mA instead of 4 mA. These pins are used for driving LED s via a series current limiting resistor.

  • Page 38: Sound Amplification

    Service Manual CP-785F In case of NICAM - mode, the phase samples are decoded according the DQPSK - coding scheme. The output of this block contains the original NICAM bitstream. DSP section All audio baseband functions are performed by digital signal processing (DSP). The DSP section controls the source and output selection, and the signals processing.

  • Page 39: Vertical Deflection

    Service Manual CP-785F Mute : In this mode the amplifier is DC biased but not operational (no audio output). This allows the input coupling capacitors to be charged to avoid pop-noise. The devices is in mute mode when 2.5 V < V <...

  • Page 40: Power Supply (Str-F665X)

    Service Manual CP-785F 5-8 Power supply (STR-F665X) 5-8 -1 STR-F665X general description The STR-F665X is an hybrid IC with a build-in MOSFET and control IC, designed for flyback converter type switch mode power supply applications. 5-8 -2 Power supply primary part operations An oscillator generates pulses signals which turn on and off a MOSFET transistor.
  • Page 41 Service Manual CP-785F When the power switch is pushed on, V increases slowly. During this time, C806 is charged through R802. As soon as V reaches 16V, the STR-F665X control circuit starts operating. Then, VIN is obtained by smoothing the winding voltage which appears between pin6 and pin7 of the SMPS transformer.
  • Page 42 Service Manual CP-785F * STR-F665X oscillating operation TO PIN4 SM PS STR-F665X D R A I N D R I V E Comp.1 V th(1) SOURCE R808 1.35mA From PIN 6 OCP/FB SM PS ( F E E D B A C K ) V th(2) R804 C850...
  • Page 43 Service Manual CP-785F When the MOSFET is ON, the STR-F665X internal capacitor C1 is charged at the constant voltage 6.5V. At the same time, the voltage at pin 1 (OCP / FB) increases with the same waveform as the MOSFET drain current. When the pin 1 voltage reaches the threshold voltage V = 0.73V, the STR-F665X internal comparator 1 starts operating.

  • Page 44: Tv Start-Up, Tv Normal Run And Stand By Mode Operations

    Service Manual CP-785F 5-9 TV start-up, TV normal run and stand-by mode operations 5-9-1 TV start-up operations * Schematic diagram for start-up operations I823 REG 3.3V G N D O U T RESET PULSE CIRCUIT O U T L511 L512 L510 Vddp Vddc VddA...
  • Page 45 Service Manual CP-785F . If the TV set was on normal run mode before switching off, the microcontroller delivers horizontal drive voltage at pin 33 and picture appears on screen. . If the TV set was on stand-by mode before switching off, the microcontroller switches TV set to stand-by mode, decreasing power pin voltage (pin 63).
  • Page 46 Service Manual CP-785F 5-9-2 TV normal run and stand-by mode operations Depending on remote control commands, I501 microcontroller part pin 63 (power) is set to: - high for normal run mode - low for stand-by mode a) TV on normal run mode * I501 microcontroller part pin 63 (power) effect I501 microcontroller part pin 63 (power) is connected to the following circuit: 6 V D C...
  • Page 47 Service Manual CP-785F On normal run mode, I501 microcontroller pin 63 (power) is set to high So, I810 controlled rectifier is not conducting - Q809 is conducting. So, Q808 is not conducting and Q807 is conducting - So, Q807 collector is connected to the ground and I810 controlled rectifier gate pin is set to low (no conducting) So, current from 11V DC voltage (from T801 SMPS transformer pin 13) does not flow through Q811 and Q810 transistors but flows through I806 IC error amplifier...
  • Page 48 Service Manual CP-785F * power supply functioning during TV set normal run mode - I801 transmits controlled pulses to T801 which generates DC voltages after rectifications by secondary part diodes and electro capacitors (by example by D820 and C813 on 143V supply voltage line).
  • Page 49 Service Manual CP-785F b) TV set on stand-by mode * TV set circuit diagram on stand-by mode -48-...
  • Page 50 Service Manual CP-785F I810 CONTROLLED RECTIFIER 6V DC HIGH R829 R830 R820 C830 HIGH Q807 Q808 HIGH POWER Q809 I810 controlled rectifier switching circuit * TV set stand-by mode operations -On stand-by mode, I501 microcontroller pin 63 (power) is set to low. - So, Q809 collector is set to high.

  • Page 51: Service Parts List

    A68QCU770X58 M50 ZZ200 MASK FRONT AS PTFMSJK016 DTE-29U1 P601A CONNECTOR 4850704S32 YH025-04+YRT205+ULW900500 SP01 SPEAKER 4858311110 12W 8 OHM SP-58126F SP02 SPEAKER 4858311110 12W 8 OHM SP-58126F ZZ290 PCB MAIN MANUAL AS PTMPMSD913 DTE-29U1TH ZZ300 PCB UNION AS PTUNSWD913 DTE-29U1TH -50-...

  • Page 52: All Electrical Parts List

    Service Manual CP-785F 6-2. All Electrical Parts List -Main PCB Assembly Parts List PART NAME PART Code PART Description Remark C101 C ELECTRO CEXF1H100V 50V RSS 10MF (5X11) TP C102 C ELECTRO CEXF1H470V 50V RSS 47MF (6.3X11) TP C103 C CERA CCXB1H102K 50V B 1000PF K (TAPPING) C104...
  • Page 53 Service Manual CP-785F PART NAME PART Code PART Description Remark C522 C ELECTRO CEXF1C471V 16V RSS 470MF (8X12)TP C523 C CERA SEMI CBXF1H104Z 50V F 0.1MF Z (TAPPING) C524 C MYLAR CMXL1J104J 63V MEU 0.1MF J C525 C CERA CCXB1H102K 50V B 1000PF K (TAPPING) C526 C MYLAR...
  • Page 54 Service Manual CP-785F PART NAME PART Code PART Description Remark C617 C CERA SEMI CBXF1H104Z 50V F 0.1MF Z (TAPPING) C618 C ELECTRO CEXF1C470V 16V RSS 47MF (5X11) TP C620 C CERA CXCH1H509D 50V CH 5PF D (TAPPING) C621 C CERA CXCH1H509D 50V CH 5PF D (TAPPING) C622...
  • Page 55 Service Manual CP-785F PART NAME PART Code PART Description Remark C841 C ELECTRO CEXF1C222V 16V RSS 2200MF (16X31.5) TP C844 C ELECTRO CEXF1E101V 25V RSS 100MF (6.3X11) TP C850 C CERA CCXB1H152K 50V B 1500PF K (TAPPING) C861 C ELECTRO CEXF1E102V 25V RSS 1000MF (13X20) TP C863...
  • Page 56 Service Manual CP-785F PART NAME PART Code PART Description Remark D825 DIODE D1N4148 - 1N4148 (TAPPING) D830 DIODE D1N4937G 1N4937G (TAPPING) D831 DIODE D1N4937G 1N4937G (TAPPING) D840 DIODE D1N4148 - 1N4148 (TAPPING) D841 DIODE D1N4148 - 1N4148 (TAPPING) D860 DIODE DRGP15J - RGP15J DO-204AC 600V 1.5A D861...
  • Page 57 Service Manual CP-785F PART NAME PART Code PART Description Remark E040 EYE LET 4856310600 BSR T0.2 (R2.3) E043 EYE LET 4856310300 BSR T0.2 (R1.6) E044 EYE LET 4856310300 BSR T0.2 (R1.6) E045 EYE LET 4856310300 BSR T0.2 (R1.6) E046 EYE LET 4856310300 BSR T0.2 (R1.6) E047...
  • Page 58 Service Manual CP-785F PART NAME PART Code PART Description Remark I823 IC REGULATOR 1LP295033- LP2950 3.3V I901 HEAT SINK ASS‘Y PT12SW5401 1TDA6107Q- + 7174301011 I901 IC VIDEO AMP 1TDA6107Q- TDA6107Q I901A HEAT SINK 4857025401 A1050P-H24 T2 I901B SCREW TAPPTITE 7174301011 TT2 RND 3X10 MFZN IA01 IC AV SWITCH...
  • Page 59 Service Manual CP-785F PART NAME PART Code PART Description Remark J041 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J042 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J043 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J044 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J045 WIRE COPPER 85801065GY...
  • Page 60 Service Manual CP-785F PART NAME PART Code PART Description Remark J090 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J091 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J093 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J094 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING J096 WIRE COPPER 85801065GY...
  • Page 61 Service Manual CP-785F PART NAME PART Code PART Description Remark N403 TERM PIN 4857417500 DA-IB0214(D2.3/DY PIN) N404 TERM PIN 4857417500 DA-IB0214(D2.3/DY PIN) P401 CONNECTOR 4850705N19 YBNH250+YBNT250+ULW=400 P501 CONNECTOR 4850705N14 YBNH250-05+YBNH250+ULW500 P601 CONN WAFER 485923172S YW025-04 (STICK) P602 CONN WAFER 485923522S YW025-09 (STICK) P904 CONN WAFER...
  • Page 62 Service Manual CP-785F PART NAME PART Code PART Description Remark R395 R CARBON FILM RD-AZ824J- 1/6 820K OHM J R396 R CARBON FILM RD-AZ272J- 1/6 2.7K OHM J R397 R CARBON FILM RD-AZ823J- 1/6 82K OHM J R398 R CARBON FILM RD-2Z129J- 1/2 1.2 OHM J R399...
  • Page 63 Service Manual CP-785F PART NAME PART Code PART Description Remark R541 R CARBON FILM RD-AZ162J- 1/6 1.6K OHM J R543 R CARBON FILM RD-AZ102J- 1/6 1K OHM J R545 R CARBON FILM RD-AZ512J- 1/6 5.1K OHM J R546 R CARBON FILM RD-AZ392J- 1/6 3.9K OHM J R547...
  • Page 64 Service Manual CP-785F PART NAME PART Code PART Description Remark R726 R CARBON FILM RD-AZ181J- 1/6 180 OHM J R801 POSISTOR DPC7R0M290 2322 662 96709 COMPATIBLE( DDC7R0M290 ECPCD7R0M290 R802 R M-OXIDE FILM RS02Z753JS 2W 75K OHM J SMALL R804 R FUSIBLE RF02Z158K- 2W 0.15 OHM K (TAPPING) R805...

  • Page 65: Control Assembly Parts Lists

    Service Manual CP-785F PART NAME PART Code PART Description Remark RA07 R CARBON FILM RD-AZ102J- 1/6 1K OHM J RA08 R CARBON FILM RD-AZ750J- 1/6 75 OHM J RA11 R CARBON FILM RD-AZ750J- 1/6 75 OHM J RA16 R CARBON FILM RD-AZ910J- 1/6 91 OHM J RA40...

  • Page 66: Compaitible Components List

    Service Manual CP-785A -65-...

  • Page 67: Exploded View

    Service Manual CP-785F 7 - Exploded view -66-...

  • Page 68: Pcb Layout

    Service Manual CP-785F 8 - PCB Layout 8-1. Main PCB -67-...

  • Page 69: Av Pcb

    Service Manual CP-785F 8-2. AV PCB -68-...

  • Page 70: Circuit Diagram

    Service Manual CP-785F 9 - Circuit Diagram -69-...
  • Page 71 NEC Corporation 7-1, SHIBA 5-CHOME MINATO-KU, TOKYO 108-8001, JAPAN...

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