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Abgleich / Adjustment Procedures
GB
Adjustment Procedures
1. Power Supply (NSM)
Test equipment: Digital Voltmeter.
Service work after changing the Power Supply: –
Adjustment
+5V, R3090
Digital voltmeter: ................................................. 1509-(9)
Playback
2. Family Board (OFB3)
Service work after changing the Family Board:
– 2.1 Sequence Control / Deck Electronic (DE) .... Adjustment no. 1
– 2.4 Audio (AF) ............................................ Adjustment no. 1.1, 2
2.1 Family Board – Sequence Control / Deck Electronic (DE)
Test aids: Test cassette
Service work after changing the ...
... Family Board or Headwheel: Adjustment no. 1
... IC7412:
Adjustment no. 1
2.2 Frontend (FE): Adjustment no. 3, 4
2.3 Audio (AF): Adjustment no. 2
Service Test Programme: Entering the VCR Option Code (para 1.5.2)
Adjustment
1. Headwheel
Insert a test cassette. Press the button "play".
Position Indicator
Call up the Service Function: Press the "STOP" button on
the remote control and then the "play" button on the video
recorder and hold them down for at least 5 s.
3 - 4
Preparation
Preparation
Adjustment Procedure
±
Adjust voltage to 5.4V
0.03V with R3090.
Adjustment Procedure
Press the "PLAY" button on the remote control and then
the "eject" button on the video recorder.
On successful adjustment the video recorder switches to
stand-by.
If the adjustment has not been carried out successfully the
video recorder ejects the test cassette. Reason: Test
cassette, headwheel or technical defect (eg. µC).
GV 411-2
GRUNDIG Service
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