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The scan is clear and well readable with very few weaker spots, usually on black background with white letters, but with enough zoom those spots can be read.
Printout is clear, the manual is complete and has all pages scanned.
I would give 5 stars, except that it is not in color, and the schematic and PCB pages are scanned on multiple pages. The document is locked (except printing) so the pages can not be extracted to compose them together for printing on the large plotter
It is worth the price tag.
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let's say first that i do not need to have a credit for my opinion, i am a retired sparkie and i voluteerd to fix an electronic device for a local "Youthgroup",as no diagram was present i checked the "net" and gambled on this site and paying some fee via PayPall, i was gladly surprised that the manual arrived as was stated, GOOD SHOW, and best wishes, John
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I had been looking for a Manual for my CS2150 for quite a while -- in fact I had just about given up. I saw this site and decided to download the Manual. When I Received it by Email I was really pleased with what I got, with the result that My Kenwood 'Scope is now 100% repaired and working well. As an AV Serviceman, you need a good 'scope, and thanks to this site, and the Service Manual, I have been able to repair it. The Manual was a copy of the Factory Original and the copy was very clear, especially in the area of the Circuit Schematics, where You really need to be sure of what You are looking at.
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I recently purchased a manual for a Samsung DLP tv to help with a trouble shooting problem I was having. Every tv repair shop wanted close to $400.00 for the fix, but after I found Owner-Manuals.com I hit pay dirt. The manual they had for me to purchase and download was a complete service manual for the exact tv I needed. It was complete with wiring diagrams, schematics, and even part numbers. If your the fix it yourself type I highly recommend trying to find any manual here before paying someone else to fix whatever problem your having.
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Once again, excellent price and manual delivered in a timely manner and as advertised!
CD SECTION Note: 1. CD Block basically constructed 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 the oscilloscope with more than 10M� 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. Focus Bias Adjustment This adjustment is to be done when the optical block is replaced. Adjustment procedure:
oscilloscope (DC range) BD board TP (RF) TP (VC)
+ �
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 ± 0.7 Vp-p.
S-curve waveform symmetry
A within 2.4 ± 0.7 Vp-p B
6. After check, remove the lead wire connected in step 2. 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. RF Level Check
oscilloscope BD board
1. Connect oscilloscope to test point TP (VC) and TP (RF) on BD board. 2. Ground display board IC701 pin @¢ with the lead wire. 3. 4. 5. 6. Turned power switch ON. (Stop mode) Put disc (YEDS-18) in and press the ^ button. Press the ^ button again. (Tracking servo ON) Adjust RV101 so that the oscilloscope waveform is as shown in the figure below (eye pattern). A good eye pattern means that the diamond shape (�) in the center of the waveform can be clearly distinguished. 7. Remove the lead wire connected in step2. � RF signal reference waveform (eye pattern)
VOLT/DIV: 200 mV TIME/DIV: 500 ns
TP (RF) TP (VC)
+ �
Procedure: 1. Connect oscilloscope to test point TP (VC) and TP (RF) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in and press the ^ button. 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 ��� can be clearly distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV: 200 mV TIME/DIV: 500 ns level: 1.3 ± 0.3Vp-p
level: 1.3 ± 0.3Vp-p
When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity. S-Curve Check
oscilloscope BD board TP (FEO) TP (VC)
+ �
E-F Balance (Traverse) Check
oscilloscope (DC range) BD board TP (TEO) TP (VC)
+ �
Procedure: 1. Ground display board IC701 pin @¢ with the lead wire. 2. Connect oscilloscope to test point TP (TEO) on BD board. 3. Turned Power switch on. 4. Put disc (YEDS-18) in and press the ^ button. 5. Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0V, and check this level.
Procedure: 1. Connect oscilloscope to test point TP (VC) and TP (FEO) on BD board. 2. Connect between test point TP (FOK) and Ground by lead wire. 3. Turned Power switch on. 4. Put disc (YEDS-18) in and turned Power switch on again and
� 12 �
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