Abgleich / Adjustment Procedures
GV 411-2
3 - 4
GRUNDIG Service
GB
Adjustment Procedures
1. Power Supply (NSM)
Test equipment: Digital Voltmeter.
Service work after changing the Power Supply: –
Adjustment
Preparation
Adjustment Procedure
+5V, R3090
Adjust voltage to 5.4V
±
0.03V with 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
Preparation
Adjustment Procedure
1. Headwheel
Position Indicator
Insert a test cassette. Press the button "play".
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.
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.
µ
C).
