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I searched EVERYWHERE looking for the manual/s on this "extinct" amp. Owner-Manuals.com made it available and for nearly nothing. Thanx to them, I can decipher the unknown cables and sort them out. Thanx, Owner-Manuals.com!!
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Yes thank you i got the file i was after. There was a slight problem in my communication but it all worked out well.
A job well done.
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Great manual...really saved me. The only problem is that I thought I would be able to download it directly when I paid for it but never received the download instructions until the next morning. The board trace pages were somewhat light also: really need to turn up the contrast on the printer before printing them. The schematic page was great; very clear! Well worth the money.
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I've been in the electronic business for a long time. I used to buy Sam's Photofact for my needs which intailed having to go to the store and paying about $20 for a package of 3 different units so I was forced to buy more than I needed just to get one.
Owner manual is just at your keyboard and the information is almost instantansouly and the cost is very reasonable. Easy to print out if needed or simply read off of the screen. The larger the screen the better for obvious reasons.
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Very good manual, at a very good price. Received in a timely manner
MDP-V10 SECTION 8 EVALUATION OF OPTICAL PICK-UP BLOCK (KHS-150A)
� To evaluate whether the optical pick-up block (KHS-150A) is good or not good, perform as follows.
8-4. CROSSTALK CHECK
1. Play the CAV of the LD reference disc (HLV-8) to check the crosstalk at 770 frames. (For details, see 7-3-1. LD Side A Adjustment on page 7-4.) 2. Adjust the RV701 and RV702 on the MB-97 board so that the crosstalk becomes best condition (no moire observed). 3. At this time, if the RV701 and RV702 rotated more than the angle shown in Fig. 8-1 (normally, the rotation angle is within ±45º from the center), the suspension (spring) of pick-up will be deformed. Playing the LD under this condition could cause the images to be disturbed in the vicinity of outside. Replace the optical pick-up.
8-1. PREPARATION
Connect the jig (J-6082-059-B) to the CN702 on the MB-97 board. (For details of connection, see Fig. 7-1 on page 7-2, and for the jig, see Fig. 7-9 on page 7-4.)
8-2. RF LEVEL CHECK
Connect an oscilloscope to the LD RF terminal of jig. Load the CD test disc (YEDS-18). Press the · button to activate the play mode. At this time, check if the RF waveform level is over 0.7V. When the RF waveform level is over 0.7V, go to �8-3. Tracking Level/Tracking Balance Check�. 6. If the RF waveform level is below 0.7V, clean the lens using the lens cleaning kit. 7. After drying the lens completely, again check the RF waveform level. And if the RF level is still low, the laser diode in the optical pick-up block has deteriorated, or internal lens is dirty. Replace the optical pick-up block. 1. 2. 3. 4. 5.
Center
Within 45�
8-3. TRACKING LEVEL/TRACKING BALANCE CHECK
1. Connect an oscilloscope to the TRK ERR Y terminal of jig. 2. Unload the CD test disc (YEDS-18), and load the LD reference disc (HLV-8) instead. 3. Press the · button to activate the play mode, and play the chapter 3. 4. After playing, please the set in the still status. At this time, observe the tracking error waveform on the oscilloscope to check that both level and balance satisfy the specification given below. Specification Level: 3V or more Balance: �6% to +9% Note: For a calculation method of balance, see Fig. 7-8 on page 74.
Within 45�
Fig. 8-1.
Notes: � In executing the above operation, if no signal is output from each terminal of jig, the laser diode will be deteriorated. When red beam is not generated from the lens during the focus search, replace the optical pick-up block. � The above checking uses basically the reference disc, and if no particular abnormality is found, a failure which occurs in the user�s disc only may be present. Especially, in the case of LD, if a wavy tracking error as shown in Fig. 8-2 appears, the pick-up is resonating. Replace it with a new one.
Tracking Error (Y)
Fig. 8-2. Play Mode
8-1 E 8-1
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