Related Manuals for RCA MCR61TF30
Summary of Contents for RCA MCR61TF30
- Page 1 A-PDF MERGER DEMO FILE NO. SM-CTV-O-039A COLOR TELEVISION SERVICE MANUAL MODEL NO. MCR61TF30/MCR66R400 MCR68R420/MCR68TF800 CHASSIS NO. CH-10C5 Please read this manual carefully before service.
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Page 2: Table Of Contents
SERVICE MANUAL TABLE OF CONTENTS SAFETY INSTRUCTIONS AND MAINTENANCE............X-Ray Radiation Precaution..................Safety Precaution......................Product Safety Notice ....................Maintenance ........................ KEY ICS AND ASSEMBLIES ..................BLOCK DIAGRAMS FOR CHASSIS ................Structure Block Diagram ....................Block Diagram for Supply Voltage System..............Block Diagram for Remote Control Structrre .............. -
Page 3: Safety Instructions And Maintenance
SERVICE MANUAL SAFETY INSTRUCTIONS AND MAINTENANCE WARNING: BEFORE SERVICING THIS CHASSIS, READ THE X-RAY RADIATION PRECAUTION , SAFETY PRECAUTION AND PRODUCT SAFETY NOTICE INSTRUCTIONS-BELOW. X-RAY RADIATION PRECAUTION 1. The EHT must be checked every time the receiver is serviced to ensure that the CRT does not emit X-ray radiation as result of excessive EHT voltage. -
Page 4: Product Safety Notice
SERVICE MANUAL PRODUCT SAFETY NOTICE Many electrical and mechanical components in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the X-ray radiation protection afforded by them cannot necessarily be obtained by using replacements rated at higher voltages or wattage, etc. -
Page 5: Key Ics And Assemblies
Sound power amplifier N001 LC86F3264AU-DIP Microcontroller N002 AT24C04/AT24C08 EEPROM NY01 TDA6107Q Video amplifier DS01 HEF4053 Analog switch circuit DS02 HEF4053 Analog switch circuit N606 TDA9859 Audio processor A101 TDQ-6F2M Tuner Notes: AT24C04 (N002) is for MCR61TF30 only; AT24C08 (N002) is for MCR66R400/MCR68R420/MCR68R800. -
Page 6: Block Diagrams For Chassis
SERVICE MANUAL BLOCK DIAGRAMS FOR CHASSIS Structure Block Diagram... -
Page 7: Block Diagram For Supply Voltage System
SERVICE MANUAL Block Diagram for Supply Voltage System... -
Page 8: Block Diagram For Remote Control Structrre
SERVICE MANUAL Black Diagram for Remote Control Structure... -
Page 9: Block Diagram For Video Signal Processor
SERVICE MANUAL Block Diagram for Video Signal Processor... -
Page 10: Service Data
SERVICE MANUAL SERVICE DATA Technical Data of Key ICs LC86F3264AU-DIP (N001) 1. Terminal Assignment Layouts Fig. 5 LC86F3264AU-DIP DIP42S Terminal Assignment Layout... - Page 11 SERVICE MANUAL 2. Terminal Function Table 2 Terminal Function Table Terminal Function Description Option Format Negative power supply Input terminal for crystal oscillation Output terminal for crystal oscillation Positive power supply Reset terminal FILT Charge-pump output terminal Image signal input terminal CVIN (available only in CH04T1002) Vertical synchronization signal input terminal...
- Page 12 SERVICE MANUAL Terminal Function Description Option Format 4-bit input/output port Port 7 Each bit can be independently programmable Other functions: INTO input/HOLD release input /Nch-Tr. output for watchdog timer INT1 input/HOLD release input INT2 input/timer 0 event input INT3 input (noise rejection filter attached input)/timer 0 event input Interrupt receiver format vector address P71-P73...
- Page 13 SERVICE MANUAL EEPROM AT24C04 (N002) 1. Features 2. Pin Configuration Data EEPROM internally organized as 512 bytes and 32 pages×16 bytes Low power CMOS Vcc=2.7 to 5.5V operation Two wire serial interface bus I C-Bus compatible Filtered inputs for noise suppression with Schmitt trigger Clock frequency up to 400 kHz High programming flexibility...
- Page 14 SERVICE MANUAL OM8839PS (N301) C-bus Controlled PAL/NTSC/SECAM TV Processors 1. Features 2. General Description The following features are available in all IC’s: The various versions of the TDA 884X/5X ·Multi-standard vision circuit with series are I C-bus controlled single chip TV alignment-free PLL demodulator without external processors which are intended to be applied in components...
- Page 15 SERVICE MANUAL 4. Block Diagram 5. Refer to Table 5 about Functions and Data of the IC’s Each Pin.
- Page 16 SERVICE MANUAL TDA8350Q (N401) DC-coupled Vertical Deflection and East-West Output Circuit 1. Features Temperature (thermal) protection Few external components East-West output stage with one single Highly efficient fully DC-coupled vertical conversion resistor. output bridge circuit 2. General Description Vertical flyback switch The TDA8350Q is a power circuit for use in 90°...
- Page 17 SERVICE MANUAL TDA7057AQ (N601) 2×8W Stereo BTL Audio Output Amplifier with DC Volume Control 1. Features 2. General Description ·DC volume control The TDA7057AQ is a stereo BTL output amplifier with DC ·Few external components volume control. The device is designed for use in TVs and ·Mute mode monitiors, but is also suitable for battery-fed portable ·Thermal protection...
- Page 18 SERVICE MANUAL TDA6107Q (NY01) Triple Video Output Amplifier 1. Features ·Typical bandwidth of 5.5 MHz for an 2. General Description output signal of 60 V (p-p) The TDA6107Q includes three video output amplifiers ·High slew rate of 900 V/S in one plastic DIL-bent-SIL 9-pin medium power ·No external components required (DBS9MPF) package (SOT 111-1), using high-voltage ·Very simple application...
- Page 19 SERVICE MANUAL STR-G5653/6454R (NQ821) Power Module The Series STR-G5653/F6654 is specifically designed to satisfy the requirements for increased integration and reliability in off-line quasi-resonant flyback converters. The series incorporates a high-precise error amplifying control and drive circuit with discrete avalanche-rated power MOSFET, featuring fewer external components, small-size and standard power supply.
- Page 20 SERVICE MANUAL 3. Pin Configuration and Functions Dwg MK-003-50mm Fig.13 3.1) Pin function for STR-G5653 Pin No. Symbol Function Description MOSFET drain MOSFET source Ground Supply voltage input for control circuit OCP/FB Over-current protection detection signal/voltage-limiting signal input 3.2) Pin function for STR-F6654 Pin No.
- Page 21 SERVICE MANUAL TDA9859 (N606) Universal Hi-Fi Audio Processor for TV Audio surround decoder can be added 1. Features externally Multi-source selector switches six AF inputs Two general purpose logic output ports (three stereo sources or six mono sources). C-bus control of all functions. Each of the input signals can be switched to 2.
- Page 22 SERVICE MANUAL HEF4053 (DS01/DS02) Triple 2-channel Analog Multiplexer/Demultiplexer 1. Description selected (low impedance ON-state) by Sn. With The HEF4053 is a triple 2-channel analog E HIGH all switches are in the high impedance multiplexer/demultiplexer with a common enable OFF-state independent of S to S input (E).
- Page 23 SERVICE MANUAL Pinning to Y Independent inputs/outputs to Y Independent inputs/outputs to S Select inputs Enable input (active LOW) to Z Common inputs/outputs Fig. 16 Pinning Diagram 3. Function Table Inputs Channel HEF4053P(N): 16-lead DIL ; plastic (SOT38-1) HEF4053D(F): 16-lead DIL; ceramic none (cerdip) (SOT74)
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Page 24: Service Data Of Key Ics
SERVICE MANUAL Service Data of Key ICs Table 3 Functions and Service Data of LC86F3264AU-DIP (N001)’s Pins Digital Multimeter Function Description Reference Positive Negative Voltage (V) Resistance (K ) Resistance (K ) Not connected 9.62 5.35 Clock line 4.89 9.56 5.08 Data line 4.87... - Page 25 SERVICE MANUAL Table 4 Functions and Service Data of AT24C04 (N002)'s Pins Digital Multimeter Function Description Reference Positive Negative Voltage (V) Resistance (K ) Resistance (K ) Address input Address input Address input Common ground Clock line 7.05 4.82 Data line 7.06 5.24 Write protect...
- Page 26 SERVICE MANUAL R-Y color difference signal output 2.37 5.91 Sub-carrier output for SECAM demodulation 0.35 6.78 5.96 3.58MHz crystal oscillator 2.54 8.02 6.04 4.43MHz crystal oscillator 2.53 8.02 6.04 APC low pass filter 4.99 9.37 Horizontal starting supply voltage 8.22 2.64 2.56 Composite video output...
- Page 27 SERVICE MANUAL Table 7 Functions and Service Data of TDA7057AQ (N601)’s Pins Digital Multimeter Function Description Reference Positive Negative Voltage (V) Resistance (K ) Resistance (K ) Volume control input 1.03 6.88 6.15 Not connected Audio R signal input 2.45 12.68 Supply voltage 16.18...
- Page 28 SERVICE MANUAL Table 9 Functions and Service Data of TDA9859 (N606)’s Pins Digital Multimeter Function Description Positive Resistance Negative Reference Voltage (V) (K ) Resistance (K ) Audio input 4.14 7.62 5.85 Output 1 7.86 6.26 Audio input 4.14 7.61 5.84 Reference voltage for filtering 8.18...
- Page 29 SERVICE MANUAL Table 10 Functions and Service Data of HEF4053 (DS01/DS02)’s Pins Digital Multimeter Function Description Reference Positive Resistance Negative Voltage (V) (K ) Resistance (K ) Signal input 9.81 6.15 Signal input Signal input 9.81 6.15 Signal output 6.66 6.21 Signal input Ground...
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Page 30: Waveforms Of Key Points
SERVICE MANUAL Waveforms of Key Points IC DATA AND WAVEFORMS OF KEY POINTS (continued) - Page 31 SERVICE MANUAL...
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Page 34: Adjustments
SERVICE MANUAL ADJUSTMENTS Set-up Adjustments The following adjustments should be made when a complete realignment is required or a new CRT is installed. Perform the adjustments in order as follows. 1. Colour purity 2. Convergence 3. White Balance Note: The purity/convergence magnet assembly and rubber wedges need mechanical positioning. Refer to Fig. - Page 35 SERVICE MANUAL Fig. 19 2. Convergence Adjustment Note: Before attempting any convergence adjustment, the TV should be operated for at least 15 minutes. Center convergence adjustment 1) Receive the crosshatch test pattern. 2) Set the brightness and contrast properly. 3) Adjust two tabs of the 4-pole magnet to change the angle between them and red and blue vertical lines are superimposed on the center area of the screen.
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Page 36: Circuit Adjustments
SERVICE MANUAL 9) Stick three adhesive tapes on wedges as shown in Fig. 18. Fig. 20 Circuit Adjustments 1. General Description All adjustments are thoroughly checked and corrected before the TV outgoing. Therefore the TV should operate normally and deliver proper colour pictures upon installation. However, several minor adjustments may be required depending on the particular location where the TV is operated. - Page 37 SERVICE MANUAL 3. Supply Voltage Adjustment Caution: +B voltage has close relation to high voltage. To avoid X-ray radiation, +B voltage should be +145V. 1) Set R801 to the mechanical center and AC power supply to 120±2V. 2) Connect a digital voltmeter to two pins of C838, and then turn on the TV. 3) Receive Philips test pattern signals.
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Page 38: Service Mode And Bus Data
SERVICE MANUAL Service Mode and Bus Data 1. How to Enter the SERVICE Mode with the Remote control. Decrease the volume to 00. Press the MUTE button on the remote control and “Mute”appears on the TV screen. Then press and hold the MUTE button on the remote control and MENU on the TV at the same time for 3 seconds and the TV enters the S mode. - Page 39 SERVICE MANUAL 3. Bus data (for MCR61TF30 only) Item Description Bus data Remarks MENU 00 AFW:240KHZ AFC window 0=125KHz 1=275KHz IF-PILL: IF-PILL frequency AFA:Inside AFC window 0=Outside 1=Inside (output) Changeable AFB:Below AFC reference level 0=Below 1=Above (output) Changeable AGC over f...
- Page 40 SERVICE MANUAL VER OUT: 0=Normal 1=Vertical scan off OVERSCAN: VER Protec Vertical blanking: 0=50/60HZ adaptive 1=50HZ BLANK FIX compulsory Vertical frequency divider 0=Normal 1=Wide range VER Dividr sync MENU 04 Vertical output V HALF 1=Only first half vertical scan V CENTER Half vertical center (vertical frequency: 60Hz) Set to the optimal mode V CENTER50...
- Page 41 SERVICE MANUAL Center frequency of color band pass: 0=1Fsc 1=1.1XFsc 1=3 line comb filter enable (auto) 0=Disable 0=Base band delay line used 1=Bypassed (auto) 0=PAL/NTSC matrix 1=PAL matrix compulsory 1: Not degaussing again within 4 minutes after auto OPT.DW4MIN degaussing with power on Over voltage protection (spot killer when power off) OPT.OVPT 1=Yes 0=No...
- Page 42 SERVICE MANUAL 1=Reducing identification sensitivity during tuning in High voltage fluctuation compensation 0=Compensating vertical output 1=Compensation horizontal/vertical output Vertical protection 1=Identification and protection 0=Identification only High voltage (X-ray protection ) 1=Identification and protection 0=Identification only Coring: 1=On 0=Off MENU 11 Others 1=Switch-off in vertical overscan function CS1.CS0...
- Page 43 FINAL WIRING DIAGRAM FOR MCR61TF30 Power Switch Assembly Control Buttons PCB Assembly XK01 XPK01A XPK02 Wired Connector XPK01 From Degaussing Coil Wired Connector XS803 VDR801 From Left Speaker From Right Speaker XP901A XP800 XSK02 XSK02 XSK01A XSW01 To Speaker's Positive...
- Page 44 FINAL WIRING DIAGRAM FOR MCR66R400...
- Page 45 FINAL WIRING DIAGRAM FOR MCR68R420 Power Switch PCB Assembly Control PCB Assembly Wired Connector XPK01 XPK01 Side AV PCB Assembly From Degaussing Coil From Power Cord Wired Connector XS803 From Left Speaker From Right Speaker XS06 Bl a ck Black Red XP901A XSK01 XP800...
- Page 46 FINAL WIRING DIAGRAM FOR MCR68TF800 Power Switch PCB Assembly Control PCB Assembly KK06 KK05 KK04 Wired Connector XS01 KK03 KK02 KK01 TV/AV MENU XPK02 XK02 Wired Connector AD-05-200 Wired Connector AD-04-120 From Left Speaker From Right Speaker XSK02 Black Red Black Wired Connector A Wired Connector B...
- Page 47 MCR68R420 (Main Diagram) Chassis : CH-10C5...
- Page 48 MCR68R420 (A/V I/O Board, Kine Board, Power Supply and others) Chassis : CH-10C5...