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There are currently no product reviews.
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Very helpful and complete manual. Maybe only one negative is schematics have sometimes unreadable name of the parts. But it's not a big problem.
 ;
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.
2. POWER SUPPLY ON I/O BOARD
No 12V
YES
No 5VT
YES
Is the VCC (14V) supNO plied to Q164 Collector?
YES
Check D124 on SMPS Board and Replace
Is the VCC (5.3V) sup- NO plied to Q155 Emitor?
YES
Check 5.3VA on SMPS Board
Is there about 12.5V at NO ZD151 & Q164 Base?
YES
Check Q164 and Replace
Is there about 0V at D152 and Q152 Collector?
YES
NO
Check Q155 and Replace
Is the VCC (33V) supplied to Q162 Emitor?
YES
NO
Check D126 on SMPS Board and Replace
Is there about 5V at R180 and 0.7V at Q152 Base?
YES
NO
Check the �TIMER H� signal from µ-COM
Is there about 0V at Q162 Base?
YES
NO
Check Q162 and Replace
Check Q152 and Replace
Is there about 5V at R171 and 0.7V at Q156 Base?
YES
NO
Check the �PWR CTL H� signal from µ-COM
Check Q156 and Replace
No 5.2V
YES
No 33VT
YES
Is the VCC (5.3V) supplied to Q151 Emitor?
YES
NO
Check 5.3VA on SMPS Board
Is the VCC (33V) supplied to Q161 Emitor?
YES
NO
Check D126 on SMPS Board and Replace
Is there about 0V at D153 and Q156 Collector?
YES
NO
Check Q151 and Replace
Is there about 0V NO at Q152 Collector?
YES
Check Q161 and Replace
Is there about 5V at R171 NO and 0.7V at Q156 Base?
YES
Check the �PWR CTL H� signal from µ-COM
Is there about 5V at R180 and 0.7V at Q152 Base?
NO
Check the �TIMER H� signal from µ-COM
Check Q156 and Replace 3-4
Check Q152 and Replace
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