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Complete service and operation manual. All schematics are there, all circuit boards AND add-on boards. Including exploded views ,component names and specifications. Also electrical and mechanical adjustment procedures are in this manual. This manual also covers the more advanced BR-S811E unit. Scan quality is fair and usable.
High quality scan of original Service Manual. EverythingΒ΄s fine!
Good scan of the original service manual. All schematics and adjustment procedures are there. It helped me to fix a long lasting problem with the tracking circuitry. The manual also includes the supplementals 1,2 and 3. Included are; electrical schematic's , pcb layout's, mechanical drawing's and exploded views, disassembly manual and maintenance procedures. 236 pages.
The Service Manual received was helpful. The electronic information is exactly what I needed.
I recomend all of my friends about this technical page.
High quality scan of service manual. I am satisfied!
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 10 Mâ¦ 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.
E-F Balance (1 Track Jump) Check
oscilloscope BD board TP (TE) TP (VC)
VIDEO SECTION Frequency Adjustment
frequency counter VIDEO board (27 MHz) + â
oscilloscope BD board TP (FE) TP (VC)
Procedure : 1. Connect oscilloscpe to TP (TE) and TP (VC). 2. Turn the power ON. 3. Load a disc (YEDS-18) and playback the number five track. 4. Press the ^ (CD) button. (Becomes the 1 track jump mode) 5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.
1 track jump waveform
Procedure: 1. Connect oscilloscope to TP (FE). Connect between TP (FE1) and TP (VC) by lead wire. Connect between TP (AGCCON) and TP (GND) by lead wire. Turn the power ON. Load a disc (YEDS-18) and actuate the focus search. (In consequence of open and close the disc tray, actuate the focus search) 6. Cofirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 4 Â± 1 Vp-p.
2. 3. 4. 5.
center of waveform B
Procedure: 1. Connect the frequency counter to check point of the VIDEO board. 2. Turned power switch on. 3. Press the FUNCTION button to select the CD. 4. Adjust CT503 on the VIDEO board so that the frequency counter reading 27.0 MHz Â± 80 Hz at stop status. Adjustment Location:
A (DC voltage)
VIDEO Board (SIDE B)
level = 1.3 Â± 0.6 Vp-p
A Specified level: B Ã 100 = less than Â± 22%
6. After check, remove the lead wire connected in step 1.
A within 4 Â± 1 Vp-p B
Checking Location: BD BOARD (Side B)
100 81 51 80 SL501 SL502
7. After check, remove the lead wire connected in step 2 and 3.
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.
TP (AGCCON) TP (GND) TP (RF)
RF Level Check
oscilloscope BD board TP (RF) TP (VC) + â IC102 TP (TE) TP (FE) IC103
CT503 31 VIDEO Frequency Check point Adjustment (27 MHz) 50
Procedure: 1. Connect oscilloscope to TP (RF). 2. Connect between TP (AGCCON) and TP (GND) by lead wire. 3. Turn the power ON. 4. Load a disc (YEDS-18) and press the ^ button to play. 5. Confirm that the oscilloscope waveform is clear and check RF signal level is correct or not. 6. After check, remove the lead wire connected in step 2.
Note: Clear RF signal waveform means that the shape âââ can be clearly distinguished at the center of the waveform.
IC101 TP (VC)
VOLT/DIV: 200 mV TIME/DIV: 500 ns
level: 1.45 Â± 0.3 Vp-p