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Detailed schematic diagram, manual for professionals
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Good service manual,exploded view,adjusment and test point locations,head alignment,mechanical checks and adjusments,all perfect.
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Block diagram,play rec block diagram,adjusments, it's a very good well done repair manual.
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Very clear copy of the philips service manual. Fast delivery. Thank you very much
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Excellent manual, detailed, very useful! Exactly what I needed, I'd recommend it to all who need it. Although images are scanned easily readable and explicit. A valuable tool product at a price more than modest, take it with confidence and you will not regret it!
3.
Mode: Playback
test tape P-4-A100 (10kHz, �10dB) oscilloscope MD OUT
Tape Speed Adjustment (Deck A) Note: Set the test mode using the following method and begin tape speed adjustment. In the test mode, the speed will switch to double speed or normal speed each time the HI-SPEED DUB button is pressed. Procedure: With the power turned ON, press the t/CLOCK SET button, ENTER button, and DISC 3 button simultaneously. (The �VOLUME� on the fluorescent display tube will blink while in the test mode.) To exit the test mode, press the 1/u button.
Waveform of oscilloscope
set
1. 2. 3. 4. 5. 6.
Insert the WS-48B into deck B. Press the · button of deck B. Press the HI-SPEED DUB button and play the tape at double speed. Adjust RV1001 of the LEAF SW board so that the reading of the frequency counter becomes 6000 ± 180 Hz. Press the HI-SPEED DUB button and play the tape at normal speed. Adjust RV1002 of the LEAF SW board so that the reading of the frequency counter becomes 3000 ± 90 Hz.
in phase
45° good
90°
135°
180° wrong
4.
After the adjustments, apply suitable locking compound to the parts adjusted.
Adjustment Location: LEAF SW board Adjustment Location: Playback Head (Deck A) Record/Playback/Erase Head (Deck B) Sample Value of Wow and flutter W.RMS (JIS) less than 0.3% (test tape: WS-48B) Playback Level Adjustment (Deck A, Deck B) Procedure: Mode: Playback
test tape P-4-L300 (315Hz, 0dB) set level meter
Remove the cassette lid.
Reverse
Foward
MD OUT
Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301 (L-CH) and RV401 (R-CH) so that adjustment within the following adjustment level. Adjustment level: CN301 playback level: 301.5 to 338.3 mV (�8.2 to �7.2 dB) level difference between the channels: within ± 0.5 dB Adjustment Location: AUDIO board
Adjustment Location [LEAF SW BOARD] (Conductor Side)
RV1001(High Speed) RV1002(Normal Speed)
RV1001
RV1002
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