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SONY WMFX277
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY WMFX277 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 6 (click to view)
SECTION 3 ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION

3-2. ELECTRICAL ADJUSTMENTS
PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened swab : playback head pinch roller capstan rubber belt 2. Demagnetize the playback head with a head demagnetizer. Do not use a magnetized screwdriver for the adjustments. 3. These measurement and adjustment should be performed with the rated power supply voltage (2.5 V) unless otherwise noted. Torque Measurement
Mode FWD FWD back tension REV (FX467/FX467ST) REV back tension (FX467/FX467ST) FF, REW CQ-201B CQ-102C Torque meter Meter reading 20 – 42 g • cm (0.28 – 0.58 oz• inch) less than 2 g • cm (less than 0.027 oz• inch) 20 – 42 g • cm (0.28 – 0.58 oz• inch) less than 2 g • cm (less than 0.027 oz• inch) more than 60 g • cm (more than 0.84 oz• inch)

• Supplied voltage : 2.5V. • Switch and control position MEGA BASS : OFF VOLUME control : maximum AVLS : NORM

TAPE SECTION
Test Tape
Type WS-48A

0 dB = 0.775V

Signal 3kHz, 0dB

Used for Tape Speed Adjustment

Tape Speed Adjustment Procedure :
test tape WS-48A (3kHz, 0dB) set

CQ-102RC

frequency counter 32 Ω

phones jack (J301)

(FX277) 1. Playback WS-48A (tape center part) and adjust RV601 so that the frequency counter reading becomes 3,000Hz. Standard value : 2,985–3,015Hz 2. Playback WS-48A (tape top and end) . Check that frequency counter reading is within ±1.0% of the reading of step 1. (FX467/FX467ST) 1. Playback WS-48A (tape center part) in the FWD state and adjust RV601 so that the frequency counter reading becomes 3,000Hz. Standard value : 2,985–3,015Hz 2. Playback WS-48A (tape center part) in the REV state. Check that frequency counter reading is within ±1.0% of the reading of step 1. Adjustment Location :

RV601 : Tape speed Adjustment

–6–

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