SONY WMFX571
Instrukcja Serwisowa

SECTION 4 MECHANICAL ADJUSTMENTS
1. PRECAUTION Clean the following parts with a denatured-alcahol-moistened sweb : Playback head Pinch roller Rubber belt Capstan Demagnetize the playback head using a demagnetizer. Do not use a magnetized screwdriver for adjustments. After adjusting, apply screw-locking compound onto the adjusted parts. Unless specified otherwise, use a specified voltage (1.3V) to perform the adjustments. 1. 2.

SECTION 5 ELECTRICAL ADJUSTMENTS
PRECAUTION Specified voltage : 1.3V Switch position MENU button : a NR light off (OFF) : AVLS light off (OFF)

2. 3. 4. 5.

TAPE SECTION
Test Tape Type WS-48A

0 dB=0.775 V

Signal 3kHz, 0dB

Purpose Tape Speed Adjustment

Torque Measurement Mode FWD FWD Back Tension REV REV Back Tension FF REW CQ-102RC CQ-102C Torque meter Meter reading 20 to 30 g · cm (0.28 to 0.42 oz · inch) 0.4 to 2.0 g · cm (0.0056 to 0.028 oz · inch) 20 to 30 g · cm (0.28 to 0.42 oz · inch) 0.4 to 2.0 g · cm (0.0056 to 0.028 oz · inch) More than 40 g · cm (More than 0.56 oz · inch)
set

Tape Speed Adjustment Procedure :
Test tape WS-48A (3kHz, 0dB) 16� Frequency counter
+ � 2 REMOTE jack (J701)

1.

CQ-201B

Playback WS-48A (Tape center part) in the FWD state and adjust RV601 so that the frequency counter reading becomes 3,000 Hz.

Specification Value: Digital frequency counter 2,970 to 3,030 Hz 2. Playback WS-48A (Tape center part) in the REV state. Check that frequency counter reading is within 60 Hz of the reading of step1.

Adjustment Location : [MAIN BOARD] � SIDE A �

RV601 : Tape speed

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