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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
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GOOD SERVICE MANUAL.I ALWAYS BUY THERE IF I FIND WHAT I AM LOKING
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Good quality (clearly readable) manual, I'm glad I could find it here, at a bargain price!
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Speedy transaction with a quick download. Awesome hassle-free service.
SECTION 1 SERVICING NOTES
1-1. WRITING FOCUS/TRACKING AUTO GAIN DATA
In general for the CD players that use a digital servo IC, the focus/ tracking gain is automatically adjusted each time a disc is changed. In this set, the gain in test disc (YEDS-18) has been written to a nonvolatile memory (IC803: X24C01S) on the Display Board, and therefore the gain is not readjusted even if a disc is changed. Accordingly, always write auto gain data when replacing the Servo Board, IC803 on Display Board, or optical pick-up. 1)Connect CN805 1 pin (IN/OUT SW) and 6 pin (GND) on Display Board. Under this condition, the set will operate even when the disc lid is open (or Key Board is not connected). 2)Connect TP (ADJ: CN105 3 pin) on Servo Board to GND, and TP (VC: CN108 2 Pin) to TP3 (TEI: IC105 @¶ pin) with lead wires respectively. 3)Connect an oscilloscope to TP (TE: CN108 1 pin).
Oscilloscope SERVO board TP (TE) TP (VC)
+ �
1-2. AF MODE
With the TP (AFJ: CN105 2 Pin) connected to the GND on Servo Board, turn on the POWER switch, and the AF mode is activated and the following checking can be made. 1-2-1. FL tube check All tubes turn on, then if · button is pressed, the display will be as shown below. (Segment ON 1)
(Segment ON 1)
IF P button is pressed, the display will be as shown below. (Segment ON 2)
2 6 12 16 18 8 14 20 4 10
(Segment ON 2)
4)Insert the test disc (YEDS-18), turn on POWER switch, and play fifth music with · (PLAY) and AMS Keys on the Remocon. 5)Adjust RV101 so that the waveform on oscilloscope is verticolly symmetric with respect to the A [Vdc], and also its level is 1.3 ± 0.6 Vp-p.
B 0Vdc A
If STOP p is pressed, all tubes turn on again.
symmetric level: 1.3 ± 0.6 Vp-p
At this time, A/B � 100 = ± 22 (%) or less 6)The auto gain data are written when a lead wire between TP (ADJ: CN105 3 pin) and GND is removed. Note: If the POWER switch was turned on without connecting TP (ADJ) to the GND, auto gain data are not written to the memory even if a disc is inserted, but the previous data saved in the memory are used as focus/tracking data.
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