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Sony MW-FX277 Service Manual
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Sony MW-FX277 Service Manual

Sony MW-FX277 Service Manual

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WM-FX277/FX467/FX467ST
QQ
3 7 63 1515 0
SERVICE MANUAL
Ver 1.0 2000.03
TE
L 13942296513
www
.
http://www.xiaoyu163.com
• Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1,710 kHz
TV: 2 - 13 ch
• Power requirements
3V DC batteries R6 (AA) x 2
• Dimensions (w/h/d)
Approx. 91.4 x 115.5 x 35.0 mm (3
incl. projecting parts and controls
• Mass
FX467/FX467ST: Approx. 155 g (5.5 oz)/Approx. 235 g (8.3 oz) incl.
batteries and a cassette
FX277: Approx. 145 g (5.2 oz)/Approx. 225 g (8.0 oz) incl. batteries
and a cassette
• Supplied accessories
Stereo headphones or Stereo earphones (1)
Carrying case with belt clip(1)
Design and specifications are subject to change without notice.
Battery life (approximate hours)
Sony alkaline LR6 (SG)
Tape playback
Radio reception
* Measured value by the standard of EIAJ (Electronic Industries
Association of Japan). (Using a Sony HF series cassette tape)
Note
• The battery life may shorten depending on the operation of the unit.
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Photo : WM-FX467
Model Name Using
Mechanism Type
Similar Mechanism
Tape Transport
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
5
5
7
x 4
x 1
⁄
⁄
⁄
inches)
8
8
16
(EIAJ*)
Sony R6P (SR)
25
7.5
40
14
RADIO CASSETTE PLAYER
co
.
9 4
2 8
US Model
QQ :376315150
手机:13942296513
2007.04.30
NEW
WM-FX277
: MF-WMFX277-114
WM-FX467/FX467ST : MF-WMFX467-114
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Summary of Contents for Sony MW-FX277

  • Page 1 Tape playback Radio reception * Measured value by the standard of EIAJ (Electronic Industries Association of Japan). (Using a Sony HF series cassette tape) Note • The battery life may shorten depending on the operation of the unit. RADIO CASSETTE PLAYER u163 http://www.xiaoyu163.com...

  • Page 2: Table Of Contents

    http://www.xiaoyu163.com 3 7 63 1515 0 TABLE OF CONTENTS Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270°C during repairing. Specifications ................1 • Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

  • Page 3: Disassembly

    http://www.xiaoyu163.com SECTION 2 DISASSEMBLY 3 7 63 1515 0 The equipment can be removed using the following procedure. Cabinet (Front) Main board Mechanism deck Belt, Capstan/reel motor (M601) Cassette holder Note : Follow the disassembly procedure in the numerical order given. 2-1.

  • Page 4: Mechanism Deck

    http://www.xiaoyu163.com 3 7 63 1515 0 2-3. MECHANISM DECK Mechanism deck 1 Claws Cabinet (center) sub ASSY L 13942296513 2-4. BELT, CAPSTAN/REEL MOTOR (M601) 3 Screws (M1.4) 4 Capstan/reel motor Mechanism deck (M601) • How to apply the belt Capstan/reel motor (M601) Belt 1 Claw...

  • Page 5: Cassette Holder

    http://www.xiaoyu163.com 3 7 63 1515 0 2-5. CASSETTE HOLDER 2 Move the hinge away from projection Hinge Projection 3 Move the hinge away from projection Hinge Cabinet (center) sub ASSY Projection Hinge Hinge 4 Spring (torsion) Cassette holder L 13942296513 CAUTIONS DURING ASSEMBLY Insert the spring (torsion) to the L shape slot as shown in the figure.

  • Page 6: Adjustments

    http://www.xiaoyu163.com SECTION 3 ADJUSTMENTS 3 7 63 1515 0 3-1. MECHANICAL ADJUSTMENTS 3-2. ELECTRICAL ADJUSTMENTS PRECAUTION PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened • Supplied voltage : 2.5V. swab : • Switch and control position playback head pinch roller MEGA BASS : OFF capstan rubber belt...
  • Page 7 http://www.xiaoyu163.com 3 7 63 1515 0 • Repeat the procedures in each adjustment several times, and the TUNER SECTION 0 dB = 1µ V frequency coverage and tracking adjustments should be finally AM Section done by the trimmer capacitors. BAND : AM AM IF ADJUSTMENT AM RF signal Put the lead-wire...
  • Page 8 http://www.xiaoyu163.com 3 7 63 1515 0 FM VCO Adjustment FM RF signal Procedure : generator 0.01µF (FM/TV IN) Carrier frequency : 98MHz Modulation : No modulation [MAIN BOARD] Output level : 0.1V (100dB/ µV) (Side B) 1. Connect the frequency counter as shown in the figure. 2.

  • Page 9: Diagrams

    http://www.xiaoyu163.com WM-FX277/FX467/FX467ST 4-2. BLOCK DIAGRAM SECTION 4 DIAGRAMS 4-1. EXPLANATION OF IC TERMINALS IC702 LC72348W-CFX1705 SYSTEM CONTROL Pin No. Pin name Descliption XOUT Crystal oscillator output (75kHz). TEST2 – Not used (Ground). Key input. Key input. Key input. Key input. Key output.
  • Page 10 http://www.xiaoyu163.com WM-FX277/FX467/FX467ST 4-3. PRINTED WIRING BOARDS Semiconductor Location DRY BATTERY Ref. No. Location SIZE "AA" (IEC DESIGNATION R6) 2PCS, 3V C-18 D-18 [MAIN BOARD] (SIDE B) [MAIN BOARD] (SIDE A) D-18 D401 D402 D703 B-10 C-18 IC301 E-14 J301 IC701 E-15 IC702 D-15...

  • Page 11: Schematic Diagram

    http://www.xiaoyu163.com WM-FX277/FX467/FX467ST 4-4. SCHEMATIC DIAGRAM Refer to page 20 for IC Block Diagrams. 3 7 6 3 1 5 1 5 0 Waveforms 425 mVp-p 75 kHz IC702 1 VOLT/DIV : 0.1 V AC XOUT TIME/DIV : 5 µsec 1.8 Vp-p 319 nsec VOLT/DIV : 0.5 V AC Q401 C...

  • Page 12: Exploded Views

    http://www.xiaoyu163.com SECTION 5 IC Block Diagrams. EXPLODED VIEWS 3 7 6 3 1 5 1 5 0 IC301 LB8115W-NA-TLM NOTE : • -XX, -X mean standardized parts, so they • The mechanical parts with no reference 5-2. MECHANISM DECK SECTION (WM-FX277) 48 47 46 45 44 43 may have some difference from the original number in the exploded views are not...

  • Page 13: Mechanism Deck Section (Wm-Fx467/Fx467St)

    http://www.xiaoyu163.com 3 7 63 1515 0 5-3. MECHANISM DECK SECTION (WM-FX467/FX467ST) (MF-WMFX467-114) supplied supplied not supplied supplied L 13942296513 supplied supplied M601 HP601 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3369-749-1 PINCH LEVER (N) ASSY 3-923-530-01 SLEEVE (M) 3-920-996-01 SPRING (PINCH N) 3-728-091-01 WASHER, STOPPER...

  • Page 14: Electrical Parts List

    http://www.xiaoyu163.com SECTION 6 MAIN ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE : • Due to standardization, replacements in the • Items marked “ * ”are not stocked since they When indicating parts by reference num- parts list may be different from the parts are seldom required for routine service.
  • Page 15 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C710 1-117-863-11 CERAMIC CHIP 0.47uF 6.3V < RESISTOR > C711 1-104-847-11 TANTAL. CHIP 22uF C712 1-126-916-11 ELECT 1000uF 6.3V 1-216-825-11 METAL CHIP 2.2K 1/16W C714...
  • Page 16 1-763-073-11 MOTOR(CAPSTAN/REEL) (INCLUDING PULLY) HP601 1-500-641-11 HEAD, MAGNETIC (PLAYBACK) (FX277) HP601 1-500-648-11 HEAD, MAGNETIC (PLAYBACK) (FX467,FX467ST) ************************************************************** u163 Sony Corporation 2000C0214-1 9-927-695-11 Personal Audio Division Company Printed in Japan © 2000.3 – 26 – Published by General Engineering Dept. http://www.xiaoyu163.com...

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Mw-fx467Mw-fx467st

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