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XR-M78 XR-M77 SERVICE MANUAL COMPACT DISC STEREO BASIC CD MECHANISM : KSM-213CDM SYSTEM This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No. 09-995-331-7T2). S/M Code No. 09-995-331-7R2...
TABLE OF CONTENTS SPECIFICATIONS ........................3 ACCESSORIES/PACKAGE LIST ....................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING/ Precaution to replace Optical block .................... 4 ELECTRICAL MAIN PARTS LIST ..................5-8 TRANSISTOR ILLUSTRATION ....................9 FL GRID ASSIGNMENT/ANODE CONNECTION ..............10 BLOCK DIAGRAM-1 ......................
SPECIFICATIONS • Design and specifications are subject to change without notice. • Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. • The word “BBE” and the “BBE symbol” are trademarks of BBE Sound,Inc.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the CAUTION instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous WARNING! radiation exposure.
WIRING-1 (MAIN: INSERTED PARTS) TO/FROM TO/FROM CD C.B CN405 PT C.B WH501 MAIN C. B TUNER ADAPTOR C. B 13 14 16 16 14 EZ MODEL CN204 EZ MODEL TO/FROM FRONT C.B WH204 TO/FROM TUNER C.B CN701 TO/FROM CD C.B CN804 TO/FROM PT C.B CN8801 J801...
WIRING-5 (FRONT) FRONT C.B FRONT C.B (CONDUCTOR SIDE) (COMPONENT SIDE) EZ MODEL TO/FROM CONTROL C.B WH203 TO/FROM CD C.B CN401 TO/FROM MAIN C.B CN201 WH204 TO/FROM MAIN C.B CN204 EZ MODEL...
SCHEMATIC DIAGRAM-3 (FRONT) FRONT C.B D202,205 : IN4148 EZ MODEL LED DRIVER DRIVER SW DECODER EZ MODEL WH204 R2209 1k SIG/MS R2204 1k RD-DATA SYSTEM R2205 1k RD-CLK 2.2/50 BUFFER 0.47/ LED DRIVER RECIVER MODEL MODEL TUNER DISPLAY DEMO POWER MODEL 330/6.3 RESET...
SCHEMATIC DIAGRAM-4 (TUNER) BALANCE BAND SW IF AMP AM IF – ANTENNA – CN701 FM/AM IF/STEREO TUNER SYSTEM TUNER ON/OFF AM TRACKING ADJ. TUNER C.B SIGNAL...
WIRING-7 (PT: INSERTED PARTS) PT C. B TO/FROM MAIN C. B J502 CN501 MD IN AUX IN LINE OUT TO/FROM MAIN C. B CN803 DIGITAL OUT C. B PT882 TO/FROM CD C. B CN404 LED902 DIGITAL PT881...
PRACTICAL SERVICE FIGURE < TUNER SECTION > 1. Clock Frequency Check Settings: • Test point: TP2 (CLK IC770 pin30) < FM SECTION > Method: Set to MW 1602kHz and check that the test IHF Sensitiviy: Less than 14dB point becomes 2052kHz±45Hz (EZ). (THD 3%) (at 88.0/98.0MHz) Less than 16dB...
IC DESCRIPTION IC, LC876564 Pin No. Pin Name Description _______________ I-STEREO/DRF Connected to stereo detection and tuner CD ASP LA9241ML pin-54 DRF. Connected to tuner PLL IC LC72131 pin-6 DO and connected to CD DSP I-TUDO/I-SQOUT LC78622ED pin-55 SQOUT. Connected to RDS data input CD DSP LC78622ED pin-56 COIN and CD ASP I-RDSDATA/O-COIN LA9241ML pin-52 DAT.
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Pin No. Pin Name Description P14/AM WIDE FL tube anode output, and INT.DIODE MATRIX input. P13/FM WIDE FL tube anode output, and INT.DIODE MATRIX input. P12/LW FL tube anode output, and INT.DIODE MATRIX input. P11/SW FL tube anode output, and INT.DIODE MATRIX input. P10/OIRT FL tube anode output, and INT.DIODE MATRIX input.
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IC, LA9241ML Pin No. Pin Name Description Pin to which external pickup photo diode is connected. RF signal is created by adding FIN2 with the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal. FIN1 Pin to which external pickup photo diode is connected.
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Pin No. Pin Name Description Pin from which TES signal is output to DSP. “High Frequency Level” is used to judge whether the main beam position is on top of bit or on top of mirror. SLOF Sled servo off control input pin. 39, 40 CV–, CV+ CLV error signal input pin from DSP.
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IC, LC78622ED Pin No. Pin Name Description DEFI Defect sense signal (DEF) input pin. (Connect to 0V when not used). Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V. Phase comparator output pin to control external VCO. VVSS —...
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Pin No. Pin Name Description XVDD — Crystal oscillator power supply pin. XOUT Pin to which external 16.9344 MHz crystal oscillator is connected. XVSS — Crystal oscillator GND pin. Be sure to connect to 0V. SBSY Subcode block sync signal output pin. EFLG C1, C2, single and dual correction monitoring pin.
CD MECHANISM EXPLODED VIEW 1/1 SPEAKER DISASSEMBLY INSTRUCTIONS Type.1 Type.4 Insert a flat-bladed screwdriver into the position indicated by the TOOLS arrows and remove the panel. Remove the screws of each speaker 1 Plastic head hammer unit andthen remove the speaker units. 2 (-) flat head screwdriver 3 Cut chisel COVER...