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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!
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Outstanding quality manual. This is the exact documentation I needed to service my AKAI GX-210D. This is a PERFECT COPY of the service manual for my machine. Outstanding service. Thank-you!
2-8. Checking Servo Operation
� Checking the focus search and spindle kick: 1 1) When the MD 2 button is pressed while the machine is in the �ALL SV OFF� status without inserting a disc, focus search and spindle kick are performed continuously. The message �FOCUS SRCH� appears on the display. 2) After the check is completed, press the 9 button to show the message �ALL SV OFF� on the display. � Checking the focus search and spindle kick: 2 1) When the �TUNER/BAND� button is pressed while the machine is in the �ALL SV OFF� status with a disk inserted or without inserted, focus search and spindle kick are performed continuously . The message �FOCUS CHECK� appears on the display. The S curve characteristics can be checked when a disc is inserted. 2) After the check is completed, press the 9 button to show the message �ALL SV OFF� on the display. � 1) 2) 3) Checking the focus servo Insert a test disc. Move the laser pickup to the center of a disc using the 6 button and 5 button. Press the TAPE 1 2 button, and set the servo mode of the inserted disc as follows. MO disk (MO) ................................... Select the �SELECT GRV� display. PIT disk (CD) .................................... Select the �SELECT PIT� display. 4) Press the MD 2 button. When the focus servo has no problem, the messages �FOCUS SRCH� appears then �FOCUS ON!� appears on the display. 5) After the check is completed, press the 9 button to show the message �ALL SV OFF� on display. � Checking that all servos are turned ON 1) When the �ENTER� button is pressed while the machine is in the �FOCUS ON!� status, the tracking and sled servos are turned on and all servos start moving. When the all servos have no problem, the message �ALL SV ON� appears on the display. 2) After the check is completed, press the 9 button to show the message �ALL SV OFF� on display.
3. ADJUSTMENT (MD)
3-1. Temperature Compensation Adjustment
Test point: Adjustment result is shown on the display Jig: Thermometer Adjustment method: 1) After activating the MD TEST mode, press the 9 button to display the �ALL SV OFF� . 2) Press the �DISP� button to change the display to �TEMP=$���. 3) Press the �EDIT� button to change the display into �TMP+**c:±## �. 4) Place a thermometer near MD mechanism to measure the room temperature. 5) Perform adjustment by pressing the 6 and 5 buttons until the thermometer reading and the value ** that is shown on the display agree. Press the �ENTER� button. 6) After the adjustment is completed, press the 9 button to display �ALL SV OFF�. 7) When the setting is completed, display the �TMP+**c:+##� again and check the value that is calculated by adding or subtracting the ## value to and from ** must be the room temperature. Note: Don�t perform the above adjustment if the room temperature cannot be measured.
3-2. Laser Power Adjustment
Test point: Pick up laser output Jig: Laser power meter Adjustment method: 1) Press the �TIMER/CLOCK� button three times in the �ALL SV OFF� state to change the display to �LASER WRITE�. 2) Press the �EDIT� button once to display �LASER=$**�. 3) Measure the pick up laser output using the laser power meter, and perform adjustment so that the measuring value is 6.8± 0.03mW by pressing the 6 and 5 buttons. After the adjustment is completed, press the �ENTER�button. 4) Press the 9 button to display �ALL SV OFF�. Note: If laser output exceeds 7.0mW, the pick up may be damaged.
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