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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
TEST MODE
< How to Enter the Test Mode >
While pressing the PROGRAM key, insert the AC power cord to AC wall outlet. Pressing the [E] key decreases the track number to -1. Pressing the [F] key increases the track number to +1. Pressing OPEN/CLOSE key opens or closes the tray. The machine enters the [Sled mode].
< When the Machine Has Entered the Test Mode >
The system is initialized and the main power is turned on. During the test mode, the main power of the CD block is turned on always. The test mode starts with the [Sled mode].
< How to Exit the Test Mode >
Remove the AC power cord from power outlet, or turn off the system power. The focus bias, tracking balance and the tracking gain adjustment values can be displayed, modified, set and released in the Play mode only of the following Test mode. When the PRGM button is pressed during Play, the adjustment value of the focus bias is displayed. After that, you can enter the followings: � FOCUS - BIAS [Display]: Pressing the RANDOM key during disc play, the focus bias setting value is displayed. [Adjustment]: Every pressing of the � key decrements the adjustment value by 1 step. Every pressing of the � key increments the adjustment value by 1 step. [Set]: The adjustment value is set by pressing the PLAY key after adjustment. Playback a disc after setting. [Release]: The set value can be released by pressing the STOP key. � TRACKING - BALANCE [Display]: Pressing the REPEAT key during disc play, the tracking balance setting value is displayed. [Adjustment]: The same procedure as in the FOCUS BIAS. [Set]: The same procedure as in the FOCUS - BIAS. [Release]: The same procedure as in the FOCUS - BIAS. � TRACKING - GAIN [Display]: Pressing the DISPLAY key during disc play, the tracking balance setting value is displayed. [Adjustment]: The same procedure as in the FOCUS BIAS. [Set]: The same procedure as in the FOCUS - BIAS. [Release]: The same procedure as in the FOCUS - BIAS.
< Types of Test Mode >
[Sled mode]
All displays of the FL tubes light. The optical pickup can be moved by pressing [E] or [F] key. Pressing the [9] key establishes the [Focus mode]. Pressing the [2] key establishes the [Play mode]. Pressing the [E] key moves the sled to outer circumference. Pressing the [F] key moves the sled to inner circumference. Pressing OPEN/CLOSE key opens or closes the tray.
[Focus mode]
Lighting of all displays of the FL tubes are turned off and returns to normal display. The focus search is performed in the focus mode regardless whether disc is inserted or not, or focus OK or NG. (Numbers of times of focus search is unlimited. Auto sequence is not used.) Focus servo is not locked in even the focus is obtained. Pressing the [2] key establishes the [Play mode]. Pressing the [E] key decreases the track number to -1. Pressing the [F] key increases the track number to +1. Pressing OPEN/CLOSE key opens or closes the tray. The machine enters the [Sled mode].
[Play mode]
Lighting of all displays of the FL tubes are turned off and returns to normal display. The focus search (numbers of search is unlimited) is performed. When focus comes to in-focus, the focus servo is locked in and the machines enters the normal play mode. During [Play mode], GFS and sound skipping are not monitored. When focus becomes out-of-focus, another attempt is made to search for focus. The tracking servo and the sled servo can be turned on and off by pressing the [2] key. Pressing the [9] key establishes the [Sled mode]. The [ || ] display can be turned on and off by pressing the [2] key . While the [ || ] display is turned off: CLV-A Tracking servo: on Sled servo: on While the [ || ] display is turned on: CLV-A Tracking servo: off Sled servo: off
Display method
8 8 8-8 8: 8 8
� FOCUS - BIAS
F 8-8 8
� TRACKING - BALANCE
8 L-8 8
� TRACKING - GAIN
G A-8 8
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