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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.
ADJUSTMENT
<TAPE PLAYER SECTION>
A MAIN C.B
6
8
8
6. Tape Speed Adjustment Settings : � Test tape :
TTA�100
SFR 1
D C B A
(TAPE CENTRE) � Test point : Phones Jack (J1) � Adjustment location : SFR1 � Tape/radio : TAPE � S-BASS : OFF � Volume : NON-CLIP Method :
VR1
* *
(MAX -10dB ) Play back the test tape and adjust SFR1 for 3000Hz ± 10Hz. Then confirm WOW is less than 0.50%.
42
VOLUME
L102
5 3
VC101
TP1(VT) * * L103
7. Azimuth Adjustment Settings : � Test tape : � Test point : � S-BASS : � Tape/radio : � Volume : � Adjustment location : Method :
PHONES
TTA�330/TTA�420 Phones Jack (J1) OFF TAPE MAX Head azimuth adjustment screw Play back the 8KHz signal of the test tape and adjust the screw so that the output becomes maximum.
L105
J1
4 3
L101 (BAR-ANT) P HEAD
1
6
7 FWD
NOTE : * : On the other componets side.
8. Maximum Output Power Adjustment Settings : � Test tape : TTA�210 � Volume : MAX � S-BASS : ON Method : For <YU, YL> : � Short the shorting point B and C only. For <YZ> : � Short the shorting point B and C . � If output is less than 1.2mW(0.14V), short the shorting point A and D . � If output is more than 3.9mW(0.25V), open the shorting point B and C and short the shorting point A and D .
<RADIO SECTION>
1. AM IF Adjustment L105 ....................................................................... 450kHz 2. AM VT Check Settings : � Test point : TP1 (VT) Method : Set to AM 530kHz and check that the test point is more than 0.8V. Then set to AM 1710kHz and check that the test point is less than 8.7V. 3. AM Tracking Adjustment L101 ....................................................................... 630kHz VC101 .................................................................. 1440kHz 4. FM VT Adjustment Settings : � Test point : TP1 (VT) � Adjustment location : L103 Method : Set to FM 76MHz and adjust L103 so that the test point becomes 1.0V ± 0.1V. Then set to FM 108.1MHz and check that the test point is less than 8.5V. 5. FM Tracking Adjustment L102 ..................................................................... 76.0MHz
31
IC101
32
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