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Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this receiver.
;
Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this tuner.
;
I have this hi-fi system for a long time and I need to repair some things. Founding this manual will be very helpfull :)
 ;
It is pretty good. The schematics were covered all components, the manual also provide the parts list . It's useful for the trouble shooting.
;
Very fast service, best quality of the service manual and the schematics
October 9th, 1995
APPENDIX B. OPTICAL ADJUSTMENT (ELECTRICAL)
18. Move the 1st carriage to the white chart position. Then press the Enter key.
<<<< AGC=27 >>>> <<<< Absolute white level (W1) >>>> Ajust VR3 : <W0X> == 0 +/- 3 **** Image Data (#3684) **** [ Exit : �!� key ] 003,003, 085,085 (082,082 <+>000) [082] [X] Ave-(O:082,E:082 <+>000) [082]
19. Adjust VR3 on the SBU until the value of X is within the required range. (In the example screen above, the value on the bottom line below the X must be 0 +/- 3.) Then input !.
<<<<<< EXIT >>>>>> [ Finish white odd even ajustment!! ] [ Next : Hit Enter Key !! ]
20. Press the Enter key. This ends the White Level Difference Adjustment and starts the Absolute White Level Adjustment.
************************************** **** AJUST WHITE LEVEL (ABSOLUTE) **** ************************************** ---- Put the White Chart on the Lamp position !! ---- << Then , Hit Enter Key >>
21. Make sure that the 1st carriage is at the white chart position. Then press the Enter key.
<<<< AGC=27 >>>> <<<< Absolute white level (W1) >>>> Ajust VR4 : [X] == 220 +0 /-10 **** Image Data (#3584) **** [ Exit : �!� key ] 002,002, 219,217 (217,215 <+>002) [216] [X] Ave-(O:217,E:214 <+>002) [215]
22. Adjust VR4 on the SBU until the value of X is within the required range. (In the example screen above, the value on the bottom line below the X must be 220 +0 / - 10.) Then input !.
<<<<<< EXIT >>>>>> [ Finish white level (absolute) ajustment!! ] [ Next : Hit Enter Key !! ]
23. Press the Enter key. This ends the Absolute White Level Adjustment and starts the Relative White Level Adjustment.
************************************** **** AJUST WHITE LEVEL (RELATIVE) **** ************************************** ---- Put the White Chart on the Lamp position !! ---<< Then , Hit Enter Key >>
B-7
Appendix B
 $4.99 IS420 RICOH
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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