Related Manuals for Sony SRF-M75PM
Summary of Contents for Sony SRF-M75PM
- Page 1 SRF-M75PM SERVICE MANUAL US Model Canadian Model Ver 1.0 1999. 04 AEP Model E Model Australian Model SPECIFICATIONS US, Canadian, and E models AEP, Australian models FM STEREO/AM PLL SYNTHESIZED RADIO MICROFILM...
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Page 2: Table Of Contents
SECTION 1 SERVICING NOTES TABLE OF CONTENTS Forced Reset The system microprocessor can be reset in the following proce- dure. SERVICING NOTES ..........2 Use these procedure when the unit cannot be worked normally due to the overrunning of the microprocessor, etc. GENERAL .............. -
Page 3: General
SECTION 2 This section is extracted from instruction manual. GENERAL US, Canadian, and E models AEP, Australian models – 3 –... -
Page 4: Disassembly
SECTION 3 DISASSEMBLY · This set can be disassembled in the order shown below. Cabinet (Front) Assy Key Board Main Board Knob (A) Cabinet (Rear) Assy Note: Follow the disassembly procedure in the numerical order given. CABINET (FRONT)/(REAR) ASSY 2 three screws (B1.7 ×... - Page 5 MAIN BOARD Note: Check that two switch (S1, S2) is latched with two adaptors when carrying out installation. 3 knob (vol) 5 main board 4 two claws 2 screw (B1.7 × 8) 1 Remove two solders. KNOB (A) 2 two knobs (A) 1 claw 1 claw 3 two adaptors...
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Page 6: Electrical Adjustments
SECTION 4 ELECTRICAL ADJUSTMENTS AM IF ADJUSTMENT TUNER SECTION 0 dB=1 µV Adjust for a maximum reading on level meter [AM] 450 kHz Setting: Band switch: AM AM VCO VOLTAGE ADJUSTMENT Put the lead-wire Adjustment Part Frequency Display Reading on Digital Voltmeter AM RF signal antenna close to 530 kHz (531 kHz) - Page 7 Adjustment Location: – MAIN BOARD (Component Side) – – MAIN BOARD (Conductor Side) – AM VCO Voltage Adjustment FM Free-Run Adjustment (MPX) AM Tracking Adjustment AM Tracking Adjustment (VT) FM Tracking Adjustment (FM IN) AM IF Adjustment –...
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Page 8: Pulse Monitor Section
PULSE MONITOR SECTION Luminance Adjustment digital voltmeter KEY board TP (LED) – Procedure: 1. Connect the digital voltmeter to TP (LED) on the KEY board. 2. Press the [PULSE] button (S112) to enter pulse monitor mode. 3. Adjust RT102 for 0.24 V reading on the digital voltmeter. Specification: 0.22 to 0.26 V Adjustment Location: –... -
Page 9: Diagrams
SRF-M75PM SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAM VREF 10.7MHz BASS BOOST AMP HEADPHONE AMP FM/AM FRONT-END, FM/AM DET, MPX L-CH REGULATOR CF3: EXCEPT PANAMA FM SENS CF4, 5: PANAMA OUT1 FM RF FM/AM POWER OUT1 10.7MHz MIX OUT IF IN B.P.F. - Page 11 5-3. SCHEMATIC DIAGRAM • See page 19 for IC Block Diagrams. SRF-M75PM • Waveforms – KEY Board – 1 IC101 @¢ XOUT 200 mV/DIV, 10 µs/DIV 208 m Vp-p 13.3 µ s 2 Q103 Base-1, Collector-2 (RADIO ON mode) 200 mV/DIV, 100 ns/DIV...
- Page 16 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark <TRANSISTOR> R172 1-216-833-11 RES, CHIP 1/16W R173 1-216-833-11 RES, CHIP 1/16W Q101 8-729-402-19 TRANSISTOR XN6501 Q102 8-729-402-16 TRANSISTOR XN4608 R174 1-216-833-11 RES, CHIP 1/16W Q103 8-729-402-19 TRANSISTOR XN6501 R175 1-216-845-11 METAL CHIP...
- Page 17 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > 1-164-004-11 CERAMIC CHIP 0.1uF 1-164-227-11 CERAMIC CHIP 0.022uF 8-719-072-59 DIODE SVC347S-TL 1-164-227-11 CERAMIC CHIP 0.022uF 8-713-100-11 DIODE 1T362 1-164-346-11 CERAMIC CHIP 8-713-100-11 DIODE 1T362 1-164-336-11 CERAMIC CHIP 0.33uF <...
- Page 18 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-845-11 METAL CHIP 100K 1/16W 1-216-821-11 METAL CHIP 1/16W 1-216-833-11 RES, CHIP 1/16W 1-216-833-11 RES, CHIP 1/16W 1-216-821-11 METAL CHIP 1/16W 1-216-821-11 METAL CHIP 1/16W 1-216-073-00 METAL CHIP 1/10W 1-216-073-00 METAL CHIP 1/10W...
- Page 19 SRF-M75PM Sony Corporation 99D0577-1 9-927-110-11 Personal Audio Company Printed in Japan © 1999. 4 – 26 – Published by General Engineering Dept.