This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
Excellent product, very clear print. Detailed circuit and assembly diagrams - this enabled me to repair my CD player with confidence. I highly recommend this site.
Fast access, 100% correct and complete service manual
Text excerpt from page 6 (click to view)
ADJUSTMENT
A MAIN C.B (BOTTOM VIEW)
VR1 VOL
SFR1 (2.4cm) SFR3 (1.2cm)
J3 EXT MIC
J1 EAR PHONE
J4 DC3V 2 RPH
S4 TAPE SPEED 1.2 2.4 3
1
1. Head Azimuth Adjustment Setting: � Test tape: TTS-930 � Tape speed: 2.4 cm � Adjustment point: Head Azimuth Adjustment screw Method: Playback the 5 kHz signal of the test tape (TTS-930) and adjust screw so that the output becomes maximum. 2. Tape Speed Adjustment (2.4cm) Setting: � Test tape: TTS-900 � Volume: MAX � Adjustment point: SFR1 Method: Playback the test tape (TTS-900) and adjust SFR1 so that the tape speed is become 3000 ± 10Hz. 3. Tape Speed Adjustment (1.2cm) Setting: � Test tape: TTS-910 � Volume: MAX � Adjustment point: SFR3 Method: Playback the test tape (TTS-910) and adjust SFR3 so that the tape speed is become 3000 ± 90Hz.
PRACTICAL SERVICE FIGURE
Tape speed: Wow & flutter: Take-up torque: F.F torque: Rew torque: Back tension: S/N ratio: Noise level: Erasing ratio: Test tape: 3000 Hz ± 90 Hz Less than 0.65% (RMS) (2.4cm) Less than 0.65% (RMS) (1.2cm) 4 ~ 12 g-cm 30 ~ 150 g-cm 25 ~ 60 g-cm Less than 1.3 g-cm More than 50 dB (DC. PB) More than 26 dB (DC. R/PB) Less than 1.7 mV (DC.Vol Max. PB) Less than 18 mV (DC. Vol Max. R/PB) More than 40 dB (1 kHz) TTS-900 (Wow & flutter/Tape speed � 2.4 cm) TTS-910 (Wow & flutter/Tape speed � 1.2 cm) TTS-920 (Distortion/Output) TTS-930 (Azimuth) TTS-940 (REC/PB)