GV 27 EURO, GV 7� EUROAdjustment Procedures
GBAdjustment Procedures
1. Chassis Board (QMB)
HEAD
BIAS R BIASGNDAL1930
19034PB-1194485
19629154LEVEL118
10
21156033618
EURO-AV1 / Scart 1
2021BIAS-2TDA524114
2111915, 19163606316019
CEURO-AV2 / Scart 2202BIAS-117300
B
ASDAAudout9007
1353
11110HEAD-AMP.85T1,25A
2IN/OUT (IO)
(HA)
HEF40531 473543
1751383007MC44603P
5PAL198
6Curr.3031Lum. Ampl.
check
TUNERLA71520F16965
&2019997007
MODUL.STV6400PAL-Curr.QQP1
(TUMOD)7507125181
170117101
11
AUDIO-FMVIDEO SIGNAL41
124SOC1012T
1711(AF)PROCESSING
12TDA9604 33175VASW40,4MHz(VS)78506417
50015721
LC89980M974601
AGC7003TAS+5VTransformer
173742TAE1148SAA131074625353
74611018
33791011 12 13 14 15 16 17 18
HF-AFCLED
6460
Band I / PLLPOWER
FOLLOW TV
SCL17720/772114FTA117203748DECK ELECTRONIC
AFCSEC-Curr.ANTI-CLOCHE CLOCHE(FM)1677466SUPPLY
TDA98xxLM339(DE)(PS)
7860
90055100510331591481355
28159095T1A
40,4MHzAFC32711017SEC-Curr.INIT1351
5725WTR
FRONT-TDA472274641480SWIN (HP1)T500mA
1118
ENDHEF4053WTL116201350TMP91C642
7465
77225208T100mA
(FV)SECAM L7400/7401
1699071
(VS-S)ANTI-CLOCHE2413133TRIV1356
NICAM (QNIC)90385VASWLC74781T1A
19070
STEREO780012521352
110VPS/PDC (VP)T500mA
1487890TMP87CS71F
TDA984041DISPLAY7201/7210
7780251945
24C081
2011CONTROL17
56
(DC)
141
65
1.1 Chassis Board � Power Supply (PS)
Test equipment: Digital Voltmeter
AdjustmentPreparationAdjustment Procedure
1. +5V, R3379Digital voltmeter:........................wire bridge 9038 (5VASW)Adjust voltage to 5.3V ?0.03V with R3379.
1.2 Chassis Board � Keyboard Control Unit (DC)
Test equipment: Frequency Counter
AdjustmentPreparationAdjustment Procedure
1. ClockCall up the Service Test Programme (see page 2-4).Observe the instructions for Level 53 (see page 2-5).
Call up Level 53 (see page 2-4).Terminate the Service Test Programme (see page 2-4).
1.3 Chassis Board � Deck Control / Deck Electronic (DE)
Test aids: Test Cassette, branded Video Cassette
Service work after changing the �
� Headwheel:Adjustment no. 1, 3
� IC7890:Adjustment no. 1, 2, 3; Keyboard Control Unit: Adjustment no. 1, Frontend: Adjustment no. 4, 5; Standard Sound: Adjustment no. 2 (only for stereo VCR)
AdjustmentPreparationAdjustment Procedure
1. Headwheel PositionCall up the Service Test Programme (see page 2-4).Observe the instructions for Level 51 (see page 2-5).
IndicatorCall up Level 51 (see page 2-4).Terminate the Service Test Programme (see page 2-4).
2. VCR Option CodeCall up the Service Test Programme (see page 2-4).Enter VCR option code (see Level 40, see page 2-5).
Call up Level 40 (see page 2-4).Terminate the Service Test Programme (see page 2-4).
3. Automatic ContourCall up the Service Test Programme (see page 2-4).Observe the instructions for Level 52 (see page 2-5).
Control-ACC(Option)Call up Level 52 (see page 2-4).Terminate the Service Test Programme (see page 2-4).
GRUNDIG Service3 - 3 k |