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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
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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