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There are currently no product reviews.
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Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
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Dear Sirs,
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
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the big video recorder format s-vhs many features delicate in loading system of the cassette. Such machines are no longer manufactured, it would be too expensive.
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THIS MANUAL IS VERY GOOD AND VERY CLEAR
PLEASE NOTE IT DOES NOT CONTAIN THE SETUP INFORMATION TO ALIGHN THE GEARS IN THE CD MECH IT DOES SHOW ALL THE PARTS AND THEIR LOCATIONS .
CD TEST MODE
1. How to activate CD test mode 1) Remove the resistor R907 (100k�) from the MAIN C.B, and add R999C 22k� or chip resistor to the MAIN C.B. (Fig. 1) 2) Connect +12V to ACC/BACK UP and � (minus) to the ground of the CONNECTOR ASSY. 3) Turn on the power. 4) Test mode will be activated and all LCD display will light up. (Fig. 2) 3. CD test mode functions Mode Start Mode Operation Key LCD Display All LCD light up DISC LOADING Operation Contents Activate test mode � Loading � All servo off � Laser on � VCC on � Continual focus search � Check APC circuit Search Mode RANDOM (The pickup lens repeat the � Laser current measurement full-swing) � Check focus error waveform * NOTE 1 � TOC reading � Normal playback Play Mode Fig. 1 REPEAT 1 � Display Track No. and Play time � Display Level/Ing. � Same operation as search mode if TOC cannot be read � SLED servo Traverse Mode Stop Mode INT REPEAT � Display Track No. and Play time All LCD light up Playback pause status Wait status Tracking servo off � All servo off � Laser on/off � Pickup moves to outer track Sled Mode All LCD light up � Pickup moves to inner track � Check mechanism operation � Sled servo � Tracking servo � CLV servo � Focus servo
�
UNLOADING DISC CHUCKING
�
� Do not insert the CD disc when checking the search mode. � Press the REPEAT key to release each mode. Fig. 2 2. How to cancel CD test mode 1) Turn off +12V to ACC/BACK UP 2) Solder back the resistor R907 (100k�) and remove the R999 (22k�) from the MAIN C.B 3) Disconnect +12V from ACC/BACK UP and � (minus) from the ground of the CONNECTOR ASSY. * NOTE 1 : There is a case that the CD cannot be operated owing to the protection circuit being operated when heat builds up in the driver IC if the focus search is opereated continually for more than 10 minutes. In this case, the power supply should be switched off for 10 minutes until the heat has been reduced and then re-start.
� 28 �
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