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- Very good scan quality, PERFECT!
- Sehr gute scan Qualitaet, empfehlenswert!
Wolfgang Sundhaus
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Good site, works ok and you get what you order, no problems experienced, got my manual within a day. A++++
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Original well scanned manual. Got the job done. Microwave problem found & corrected. For $5 and a new magnitron from ebay, it was a cheap and good the first shot fix. Electrical schematics allowed me to mage sure every thing else was ok before cutting and order for parts. Hard to live without.
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I was very skeptical of this website, I have never downloaded manuals before. I put it on the AMEX and payed through Paypal to ensure protection. I got the manual exactly as described and now I can replace the filter capacitor for this amp. Great Price, others selling for 12.99 or more and this is the same manual. I will search out this website for other manuals. Thank you
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Manual was reasonably easy to follow. I am not an engineer or know much about electronics but with the manuals help I was able to figure out the problem, identify the part required for the repair. Replacement part cost around $30. Whilst replacing the part I was telling myself, "this aint gonna work cos it seems far too easy". Took about 15 minutes to do and my plasma TV works a treat. Would never have been able to do this without the service manual.
CD SECTION
Notes: 1. CD block basically constructed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated. 3. Use the oscilloscope with more than 10 M� impedance. 4. Clean an object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.
RF signal waveform
VOLT/DIV: 200 mV TIME/DIV: 500 ns (with the 10: 1 probe in use) level: 1.3 +0.25 Vp-p �0.20
S-Curve Check Connection:
BD board TP (FE) TP (VC)
oscilloscope
When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity. When a general remote commander is not used (1 Track Jump Check): Procedure: 1. Connect the oscilloscope to TP (TE) and TP (VC) on BD board. 2. Turned power switch on. 3. Put disc (YEDS-18) in and press the � button, and play the number five track. 4. Press the � button. (Becomes the 1 track jump mode) 5. Confirm that the level B of the oscilloscope's waveform and the A (DC voltage) of the center of the traverse waveform. Confirm the following:
CN101
+ �
Procedure: 1. Connect the oscilloscope to TP (FE) and TP (VC) on BD board. 2. Connect between test point TP (FOK) and GND by lead wire. 3. Turned power switch on. 4. Put disc (YEDS-18) in and turned power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out.) 5. Confirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 3.0 ± 1.0 Vp-p.
S-curve waveform
symmetry
A�B � 100 = ± 7 (%) 2 (A + B)
Center of the waveform B
1 track jump waveform
A
within 3.0 ± 1.0 Vp-p
B
A (DC voltage) 0V
6. After check, remove the lead wire connected in step 2.
symmetry
level: 1.3 ± 0.6 Vp-p
Note: � Try to measure several times to make sure that the ratio of A : B or B : A is more than 10 : 7. � Take sweep time as long as possible and light up the brightness to obtain best waveform.
Connection Location:
[BD Board] (Side A)
RF Level Check Connection:
oscilloscope (AC range)
CN102
BD board TP (RF) TP (VC)
+ �
IC101 TP (FOK) IC103
Procedure: 1. Connect the oscilloscope to TP (RF) and TP (VC) on BD board. 2. Turned power switch on. 3. Put disc (YEDS-18) in and press the � button. 4. Confirm that the oscilloscope waveform is clear and check RF signal level is correct or not.
Note: Clear RF signal waveform means that the shape ��� can be clearly distinguished at the center of the waveform.
TP (TE) TP (FE)
TP (RF) TP (VC)
� 17 �
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