SONY TCM454VK
Manual de Servicio

SECTION 5 ELECTRICAL ADJUSTMENTS
Precaution � Supplied voltage: 2.5 V � Switch and control position VOR switch (S104): OFF PAUSE switch (S105): OFF VOL (RV101): mechanical mid SPEED CONTROL (RV602): mechanical center Test Tape
Type P-4-A063 WS-48A Signal 6.3 kHz, �10 dB 3 kHz, 0 dB Used for head azimuth adjustment tape speed adjustment

Tape Speed Adjustment Procedure: Mode: playback
Standard tape for adjusting WS-48A (3 kHz, 0 dB) 10 k � set EAR jack
+ �

frequency counter

1. Play back WS-48A (tape end part) and adjust RV601 so that the frequency counter reading becomes 3,000 ± 15 Hz. 2. Play back WS-48A tape the beginning and the end part, check that the frequency counter reading is within same standard of step1. Adjustment Location:

0 dB=0.775 V Record/Playback Head Azimuth Adjustment Procedure: Mode: playback
test tape P-4-A063 (6.3 kHz, �10 dB) 10 k � set EAR jack
+ �

level meter

[MAIN BOARD] (Conductor side)

1. Turn the adjustment screw to obtain the maximum reading on level meter.
Note: Several peaks may appear, but take the maximum.

IC101

2. After the adjustment, lock the adjustment screw with suitable locking compound. Adjustment Location:
RV601

adjustment screw

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