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SERVICE MANUAL
MICROFILM
XR-5W497RB
Dolby noise reduction manufactured under license from Dolby Labo-
ratories Licensing Corporation.
"DOLBY" and the double-D symbol a are trademarks of Dolby
Laboratories Licensing Corporation.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
FM/AM CASSETTE CAR STEREO
– 1 –
AEP Model
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Summary of Contents for Sony XR-5W497RB
- Page 1 XR-5W497RB SERVICE MANUAL AEP Model Dolby noise reduction manufactured under license from Dolby Labo- ratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. Notes on Chip Component Replacement • Never reuse a disconnected chip component.
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Page 2: Block Diagram - Tape Section
XR-5W497RB 3-2. BLOCK DIAGRAM — TAPE SECTION — TUNER TAPE L SECTION SUB SYSTEM CONTROL EQ AMP/DOLBY NR IC201 (2/2) IC401 OSC 1 70U/120U X201 METAL 8MHz ON/OFF DOLBY OSC 2 DOLBY R-CH X202 AUTO 32.768kHz MUSIC SENSOR MS-GV AMS GAIN... -
Page 3: Block Diagram -Tuner Section
XR-5W497RB 2-3. BLOCK DIAGRAM — TUNER SECTION — ISO701 (1/5) S-REMOTE REMOTE IC561 Q705 CDC-L R-CH CDC-R TEL (+) TAPE TAPE L TEL (–) VDD B SECTION 5V REG BATT VDD A IC521 Q803 SOURCE SELECT IC531 TUNER UNIT TU101... -
Page 4: Block Diagram - Dsp Section
XR-5W497RB 2-4. BLOCK DIAGRAM — DSP SECTION — AUDIO DSP ELECTRONIC VOLUME POWER AMP IC603 IC605 IC901 ISO701 (4/5) LINE FL (+) AUDIO L TUNER IC604 FL (–) IC602 IC721 Q711 SECTION DRDY Q973 8 7 9 MODE FR (+) R-CH FR (–) -
Page 10: Ic Block Diagrams
• IC Block Diagrams IC141 HA12181FP 10 9 IF AGC PULSE NOISE DETECTOR HPF1 DETECT PULSE GATE PULSE DETECTOR REFERENCE GENERATOR CURRENT CIRCUIT PULSE DETECT GATE PULSE 1 GATE PULSE 2 HIGH PASS AMP PHASE BUFFER (WAVEFORM COMP.) CURRENT REFERENCE REFERENCE VOLTAGE LEVEL... - Page 11 IC121 LC72146M XOUT REFERENCE 24 XIN DIVIDER 23 VSS 22 AOUT SWALLOW COUNTER 1/16,1/17 4BITS 21 AIN WIDNARW 20 PD0 MONO STE 12BITS PROGRAMMABLE PHASE DETECTOR 19 PD1 DATA SHIFT DIVIDER CHARGE PGMP DX.LO REGISTER LATCH 18 VSS AM.ON FM.ON 17 FM.OSC 16 AM.OSC POWER ON...
- Page 12 IC241 S-24C04AFJA DOUT DATA OUTPUT ACKNOWLEDGE OUTPUT CONTROL CIRCUIT SELECTOR DECODER EEPROM ADDRESS COUNTER LOAD DATA REGISTER COMP DEVICE ADDRESS COMPARATOR LOAD SERIAL HIGH VOLTAGE CLOCK CONTROL GENERATOR CIRCUIT START/STOP DETECTION CIRCUIT TEST IC301 MSM6688GS-2K TIMING DATA CONTROLLER MCU I/F REGISTER SADX CONTROLLER...
- Page 13 IC302 MSM6684JSDR1 IC605, 607 CXA1846N 20 19 13 12 11 TEST TIMING REFRESH TIMER RS/A RWCK GENERATOR – 8dB STEP 1dB STEP RFSH VOLUME VOLUME TEST TEST REFRESH ADDRESS 8,388,608DATA COUNTER REGISTER TEST LATCH BUFFER TEST LATCH ROW ADDRESS CONTROL COLUMN DECODER COUNTER ROW ADDRESS...
- Page 14 IC603 AK7712A 75 74 73 72 71 70 69 68 67 63 62 61 60 59 58 57 56 55 54 53 52 51 DVDD DZF2 76 DVSS DXF1 77 NC 78 AVB 79 SDOUT3 A-OUT-R2 AOUTR SDATA AOUTL LRCK A-OUT-L2 BCLK NC 82...