Power Supply (Msm1); Family Board (Mfb); Sequence Control / Deckelectronic (De); Frontend (Fv) - Grundig GV400 Servicehandbuch

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Abgleichvorschriften / Adjustment Procedures
GB

Adjustment Procedures

1. Power Supply (MSM1)

Test equipment: Digital Voltmeter.
Service work after changing the Power Supply: –
Adjustment
+5V Digital voltmeter: ................................................ SM111-9

2. Family Board (MFB)

Service work after changing the Family Board:
- 2.1 Sequence Control / Deck Electronic (DE) ...... Adjustment no. 1
- 2.4 Standard Sound / Audio Linear (AL) .......... Adjustment no. 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 (FV): Adjustment no. 3
Adjustment
1. Headwheel – Load a test cassette.
Position Indicator – Call up the service function: Press the "STOP" button on the remote control handset and the "
recorder ...........................................................................
– Press the "
– 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).
3 - 4
Preparation
Preparation
2
" button on the remote control handset and the "
Adjustment Procedure
±
Adjust voltage to 5,4V 0.03V with R3204.
Adjustment Procedure
simultaneously for approx. 5s.
"button on the recorder simultaneously.
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2
" button on the
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