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A good manual! fast service and good qualityi for pdf document.
thanks!
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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.
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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
HTP-120 IDLING ADJUSTMENT
Adjustment of Idling current
1). Cancel the Auto standby ON mode. P604 is short. 2). Connect the DC volt meter to P531. 3). At the no load and no input signal condition. 4). Turn on the power switch. And adjust 0.25mV by trimmer (R544) on Main PC board. 5). After heat run for about 5 minutes, and set 4mV by R544 again.
D911 C912
Printed circuit board view from component side
C911
NCAF-7455
Trimmer
P604
Q623
R544
Q514
Q513
P623
P531
Q516 Q952 Q515
Q951
Q541
DC Volt meter
Setting position of shipping
Output level ---------------------- MIN
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