- SERVICING NOTE
- Loading Panel
- Front Panel
- TC Mechanism Deck
- CD SW Board, Panel Board
- Disc Tray
- MECHANICAL ADJUSTMENTS
- ELECTRICAL ADJUSTMENTS
- Circuit Boards Location
- Block Diagrams
- Tuner Section
- Deck Section
- CD Section
- Main Section
- Printed Wiring Board —Tuner Section
- Schematic Diagram — Tuner Section
- Printed Wiring Board — Main Section
- Schematic Diagram — Main Section
- Schematic Diagram — Deck Section
- Printed Wiring Board — CD Motor Section
- Schematic Diagram — CD Motor Section
- Schematic Diagram — CD Section
- Printed Wiring Board — CD Section
- Printed Wiring Board — Panel Section
- Schematic Diagram — Panel Section
- IC Pin Functions
- IC Block Diagrams
- EXPLODED VIEWS
- Case Section
- Front Panel Section 1
- Front Panel Section 2
- Back Panel Section
- CD Mechanism Section 1 (CDM38 - 5BD19)
- CD Mechanism Section 2 (CDM38 - 5BD19)
- Base Unit Section (BU - 5BD19)
- TC Mechanism Section 1 (TCM - YSW47C24)
- TC Mechanism Section 2 (TCM - YSW47C24)
- TC Mechanism Section 3 (TCM - YSW47C24)
- ELECTRICAL PARTS LIST
There are currently no product reviews.
Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
Very fast and perfect delivery. Clear and well scanned. A lot of work professionally realized.
Again thak you a lot
This manual is accurate and of high quality. It is only volume 2 of the service manual. This is schematic, parts lists, and exploded mechanical drawings. The theory of operation and the diss-assembly instructions are in volume 1. The unit can be tricky to dis-assemble portions of so the volume 1 manual can be important. The product description of the manual is accurate but it does not say anything about volume 1 and the image of the front page does clearly say Volume 2.
Wellll again thank you very much fast and effective. Clear and well done for such an old TV!!!!
It has all the information you will need to fix it. The main circuit diagram is only A4 but being a PDF, you can print it to any size - I did it on two sheets of A3 and it didnt lose any detail - just made it readable when pinned up above the bench. I've found the fault, just need to buy some obscure bits to get it going again!
I cant fault the process, I paid for the manual in the morning and it was ready to download by lunch time.
Note: 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10Mâ¦ impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. 5. Adjust the focus bias adjustment when optical block is replaced. Focus Bias Adjustment
oscilloscope BD board TP (RF) TP (VC)
S Curve Check
oscilloscope BD board TP (FEO) TP (VC)
Procedure : 1. Connect oscilloscope to test point TP (FEO). 2. Connect between test point TP (FOK) and Ground by lead wire. 3. Turn 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. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2.4 Â± 0.7 Vp-p. S-curve waveform
Procedure: 1. Connect oscilloscope to test point TP (RF). 2. Turned Power switch on. 3. Put disc (YEDS-18) in and playback. 4. Adjust RV101 so that the waveform is clear. (Clear RF signal waveform means that the shape âââ can be clearly distinguished at the center of the waveform.) 5. After adjustment, check the RF signal level. â¢ RF signal VOLT/DIV: 200 mV TIME/DIV: 500 nS
A within 2.4 Â± 0.7 Vp-p B
6. After check, remove the lead wire connected in step 2. Note: â¢ Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. â¢ Take sweep time as long as possible and light up the brightness to obtain best waveform. RF Level Check
level: 1.3 Â± 0.3 Vp-p oscilloscope BD board TP (RF) TP (VC)
Procedure : 1. Connect oscilloscope to test point TP (RF) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in and playback. 4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. Note: Clear RF signal waveform means that the shape âââ can be clearly distinguished at the center of the waveform. RF signal waveform
VOLT/DIV: 200 mV TIME/DIV: 500 nS
level: 1.3 Â± 0.3 Vp-p
â 14 â