SONY TCTX5
Manual de Servicio

Record/Playback Head Azimuth Adjustment Procedure: 1. Mode : REV playback
Test tape P-4-A100 (10 kHz, �10 dB)
   

Tape Speed Adjustment Procedure: Mode: FWD playback
test tape WS-48B (3 kHz, 0 dB) 47 k � frequency counter

level meter 47 k � set

+ �

set LINE OUT

+ �

LINE OUT
  

2. Turn the adjustment screw for the maximum output levels. If these levels do not match, turn the adjustment screw until both of output levels match together within 1 dB.
  

1. Set to FWD playback mode. 2. Adjust RV801 so that the frequency counter reading becomes 2,980 ± 30 Hz. 3. Confirm that the deviation between tape top and tape end is within 3%. Playback Level Adjustment Procedure: Mode: FWD playback
test tape P-4-L300 (315 Hz, 0 dB) 47 k � set

L-CH peak output level R-CH peak

within 1dB within 1dB

level meter + � LINE OUT

Screw position

angle L-CH peak R-CH peak

3. Phase Check Mode : playback
test tape P-4-A100 (10 kHz, �10 dB) L-CH set 47 k � 47 k �
V + � + � H

Adjust RV151 (L-CH) and RV251 (R-CH) so that the reading on level meter meets the adjustment limits below.
oscilloscope

Adjustment Limits: LINE OUT level: �4.7±0.5 dB (0.43 to 0.48 V) Level difference between channels: within 2 dB Check that the LINE OUT level does not change even if Playback and Stop operation is repeated several times. Adjustment Location: DECK board

R-CH LINE OUT Screen pattern

Adjustment Location: [DECK BOARD] (Component side)

in phase 45° Good

90°

135° 180° Wrong

RV152 Record BIAS(L-CH) RV252 Record BIAS(R-CH)

RV151 Playback Level(L-CH)

4. Set in the FWD mode and repeat the step 1 to 3. 5. After the adjustment, lock the screw with locking compound. Adjustment Location: Record/Playback head

RV251 Playback Level(R-CH)

T351

IC305 CN352

FWD side
 

REV side
 

Adjustment screw

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