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WM-GX612/GX614
SERVICE MANUAL
Ver 1.1 2002. 01
Sony Corporation
9-960-414-12
2002A1600-1
Personal Audio Company
© 2002.1
Published by Sony Engineering Corporation
Photo : WM-GX614
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
RADIO CASSETTE CODER
— 1 —
AEP Model
UK Model
E Model
Australian Model
NEW
MF-WMGX614-112
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Summary of Contents for Sony WM-GX612
- Page 1 Ver 1.1 2002. 01 E Model Australian Model Photo : WM-GX614 Model Name Using Similar Mechanism Tape Transport Mechanism Type MF-WMGX614-112 SPECIFICATIONS RADIO CASSETTE CODER Sony Corporation 9-960-414-12 2002A1600-1 Personal Audio Company © 2002.1 Published by Sony Engineering Corporation — 1 —...
- Page 2 LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. — 2 —...
- Page 3 SECTION 1 SERVICE NOTE [Service Mode] [MAIN Board] Mode which enables the mechanism to be operated with the — Side A — SQUARE WAVE (SINE WAVE) MAIN board opened. AF OSCILLATOR 10Hz 3.5 dB (1.5V) Photo sensor PH701 mounted on the MAIN board is used to detect rotaion of the reels.
- Page 4 [Rotation system] Rotation system during REW. Rotation system during PLAY. Motor pully Gear (B) Gear (NR) Motor pully Clutch assembly Reel table Reel table (REW : Left side) Reel table (T side) (T side) Gear (B) Clutch assembly (S side) Gear (C) Gear (A) Gear (K)
- Page 5 SECTION 2 GENERAL FUNCTION OF CONTROL !∞ !¢ !£ !™ !¡ !• !¶ !§ Display Window HOLD knob !¡ PRESET +/AMS FF button VOLUME knob !™ PRESET –/AMS REW button RADIO ON/BAND button !£ MENU button TUNIG + button !¢ BATT indicater TUNIG –...
- Page 6 This section is extracted from instruction manual. — 6 —...
- Page 7 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. CASSETTE LID ASSY AND CASE ASSY 6 Two screws (M1.4x2) 5 TU flexible board 7 Cassette lid ASSY 8 Reel ornament ASSY 9 Mechanism Block Note : Adjust the knob and the switch 2 Screw position when installing.
- Page 8 3-3. TUNER BOARD 1 Three tapping screws 2 TU cover Note for installation 3 TUNER board 4 Case ASSY 3-4. MAIN BOARD 4 Remove the solder of the ATS flexible board. 5 Tapping screw 2 Remove the solder of the plunger solenoid.
- Page 9 SECTION 4 SECTION 5 MECHANICAL ADJUSTMENT ELECTRICAL ADJUSTMENT PRECAUTION PRECAUTION 1. Before adjusting, clean the following parts with a piece of 1. Specified voltage : 1.3V. cotton moistened with alcohol. 2. Switch position playback head pinch roller DOLBY NR switch : OFF rubber belt capstan MEGA BASS switch: NORM...
- Page 10 TUNER SECTION [AM] [FM VCO Adjustment] BAND switch : AM NOTE: The adjustment should be performed setting the area indication Procedure : to “Eur”. (Refer to “Receiving Stations Outside Your Country” FM RF SSG on page 6.) After the adjustment, reset the area indication as it was. 0.01µF AM RF SSG Carrier frequency : 98MHz...
- Page 11 SECTION 6 DIAGRAMS 6-1. IC PIN FUNCTIONS • IC501 BA3641FV REC AMP Pin No. Pin Name Function ALC detect output STBY IC power switch MIC MUTE Mic amp mute control REC IN2 REC amp monitor amp input REC IN1 REC amp monitor amp input MIC OUT1 Mic amp output MIC OUT2...
- Page 12 Pin No. Pin Name Function M-BRK Motor brake control (not used) TEST — Test pin (open) OSC2 — Resistor connect pin for CR oscillator (800 kHz). (open) OSC1 — Resistor connect pin for CR oscillator (800 kHz). (open) — Power supply connect terminal —...
- Page 13 • IC702 SMC62L3A LCD DRIVE Pin No. Pin Name Function COM2 LCD common signal output COM3 LCD common signal output SEG0 LCD segment signal output (not used) (open) SEG1 LCD segment signal output (not used) (open) SEG2 SEG3 SEG4 SEG6 SEG8 SEG9 SEG10...
- Page 14 MEMO...
- Page 20 WM-GX612/GX614 MEMO...
- Page 21 SECTION 7 EXPLODED VIEWS NOTE: • Items marked “*” are not stocked since they are • Hardware (# mark) list and accessories and packing seldom required for routine service. Some delay materials are given in the last of this parts list. should be anticipated when ordering these items.
- Page 22 7-2. MAIN BOARD SECTION S903 ND701 not supplied REF.No. Part No. Description Remark REF.No. Part No. Description Remark 3-366-892-01 SCREW (M1.4) A-3016-751-A MAIN BOARD, COMPLET (GX614) X-3370-961-1 BRACKET ASSY A-3016-752-A MAIN BOARD, COMPLET (GX612) 3-928-466-01 COVER, MD (GX614) 3-928-934-01 TERMINAL BOARD (MINUS),BATTERY 3-928-466-11 COVER, MD (GX612) 3-929-575-01 TERMINAL BOARD, BATTERY 3-928-464-01 LEVER (B), LOCK...
- Page 23 7-3. MECHANISM SECTION (MF-WMGX614-112) PM901 M901 HRPE901 REF.No. Part No. Description Remark REF.No. Part No. Description Remark X-3368-776-1 PINCH LEVER (N) ASSY 3-928-443-01 SPRING (R) 3-916-341-01 SPRING (PINCH N) 3-365-801-01 TABLE, REEL 3-704-413-31 SCREW (M1.4X7.2) 3-916-353-01 GEAR (A) 3-916-357-01 GEAR (REEL) 3-916-352-01 GEAR (FR) 3-366-058-01 SPRING, COMPRESSION 3-916-354-01 GEAR (B)
- Page 24 ATS FLEXIBLE SECTION 8 ELECTRICAL PARTS LIST MAIN • Due to standardization, replacements in the parts • SEMICONDUCTORS NOTE: list may be different from the parts specified in In each case, u: µ , for example: the diagrams or the components used on the set. uA...: µ...
- Page 25 MAIN REF.No. Part No. Description Remark REF.No. Part No. Description Remark C713 1-164-156-11 CERAMIC CHIP 0.1uF < TRANSISTOR > C714 1-164-156-11 CERAMIC CHIP 0.1uF C715 1-104-847-11 TANTAL. CHIP 22uF Q301 8-729-230-72 TRANSISTOR 2SA1362YG C716 1-162-970-11 CERAMIC CHIP 0.01uF Q302 8-729-421-29 TRANSISTOR UN5216R Q303 8-729-421-77 TRANSISTOR...
- Page 26 MAIN TU FLEXIBLE TUNER REF.No. Part No. Description Remark REF.No. Part No. Description Remark R507 1-216-801-11 METAL CHIP 1/16W R730 1-216-845-11 METAL CHIP 100K 1/16W R508 1-216-833-11 METAL CHIP 1/16W R731 1-216-849-11 METAL CHIP 220K 1/16W R509 1-216-833-11 METAL CHIP 1/16W R510 1-216-849-11 METAL CHIP...
- Page 27 Ver 1.1 2002.01 TUNER REF.No. Part No. Description Remark REF.No. Part No. Description Remark 1-162-905-11 CERAMIC CHIP 0.25PF 50V 1-164-227-11 CERAMIC CHIP 0.022uF 1-135-316-11 TANTAL. CHIP 22uF 2.5V 1-165-128-11 CERAMIC CHIP 0.22uF 1-164-227-11 CERAMIC CHIP 0.022uF 1-162-905-11 CERAMIC CHIP 0.25PF 50V 1-162-966-11 CERAMIC CHIP 0.0022uF 1-104-847-11 TANTAL.
- Page 28 TUNER REF.No. Part No. Description Remark REF.No. Part No. Description Remark < JUMPER RESISTOR > 1-216-829-11 METAL CHIP 4.7K 1/16W 1-216-853-11 METAL CHIP 470K 1/16W 1-216-295-91 CONDUCTOR, CHIP (2012) 1-216-853-11 METAL CHIP 470K 1/16W 1-216-864-11 METAL CHIP 1/16W 1-216-818-11 METAL CHIP 1/16W 1-216-864-11 METAL CHIP 1/16W...
- Page 29 TUNER REF.No. Part No. Description Remark REF.No. Part No. Description Remark 1-528-434-11 BATTERY CHARGER (BC-7SG)(GX614:AUS) 1-216-841-11 METAL CHIP 1/16W 1-528-543-11 BATTERY,NICKEL CADMIUM(NC-6WM) 1-216-833-11 METAL CHIP 1/16W (GX612:E,EA,KR/GX614) 1-216-826-11 METAL CHIP 2.7K 1/16W 1-216-849-11 METAL CHIP 220K 1/16W 1-528-543-22 BATTERY,NICKEL CADMIUM(NC-6WM) (GX612:AEP,UK,IT) 1-216-825-11 METAL CHIP 2.2K...
- Page 30 WM-GX612/GX614 MEMO...
- Page 31 WM-GX612/GX614 Printing Method for Large Sized Documents Such As Circuit Diagrams Printing the page that exceeds A4-size two pages (or letter size) is possible by specifying the print range. (Acrobat Reader Version 4.0 or later) 1. The enlarged print is made, if a smaller range than A4 size is specified and the A4 size is selected as a print paper.
- Page 32 WM-GX612/GX614 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 1995.10...
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