Adjustment Procedures - Grundig GV 27 Servicehandbuch

GV 27 ..., GV 47 ..., GV 7...

Adjustment Procedures

GB
1. Chassis Board (QMB)
21 1
EURO-AV1 / Scart 1
20 2
21 1
EURO-AV2 / Scart 2
C
20 2
B
SDA Audout
A
10
1 11
IN/OUT (IO)
2
3
HEF4053
7513
1 8
5
6
TUNER
16 9
1
& 20
MODUL. STV6400
(TUMOD)
7507 1
1701
1710
11
AUDIO-FM
1
(AF)
1711
40,4MHz
5721
AGC
TAE
3742
17
7461
HF-AFC
Band I / PLL
1720
1 3748
SCL
7720/7721
1 14
AFC
ANTI-CLOCHE
TDA98xx
9005
5100
28 15
9095
AFC
40,4MHz
32
5725
FRONT-
11
1 8
END
HEF4053
1
(FV) 7722
SECAM L
16 9
(VS-S)
5VASW
9038
1
STEREO
1 10 VPS/PDC (VP)
14
TDA9840
7780
20 11 1
1.1 Chassis Board – Power Supply (PS)
Test equipment: Digital Voltmeter
Adjustment
1. +5V, R3379 Digital voltmeter: ........................ wire bridge 9038 (5VASW)
1.2 Chassis Board – Keyboard Control Unit (DC)
Test equipment: Frequency Counter
Adjustment
1. Clock Call up the Service Test Programme (see page 2-4).
Call up Level 53 (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
Adjustment
1. Headwheel Position Call up the Service Test Programme (see page 2-4).
Indicator Call up Level 51 (see page 2-4).
2. VCR Option Code Call up the Service Test Programme (see page 2-4).
Call up Level 40 (see page 2-4).
3. Automatic Contour Call up the Service Test Programme (see page 2-4).
Control (Option) Call up Level 52 (see page 2-4).
GRUNDIG Service
BIAS R BIAS
1
1962
5603 3618
1 BIAS-2
1915, 1916
BIAS-1
HEAD-AMP.
(HA)
3007
PAL
Curr.
65
PAL-Curr.
VIDEO SIGNAL
24
PROCESSING
12
33
(VS) 1 7
TDA9604
7850 LC89980M
7003
1
14 8
FOLLOW TV
SEC-Curr.
(FM)
CLOCHE
5103
3159
7110
17 SEC-Curr.
TDA4722
WTL
16
7465
5208
ANTI-
24 13
CLOCHE
LC74781
12
7800
TMP87CS71F
8 7890
4 1 DISPLAY
7201/7210
24C08 CONTROL
7
5 6
(DC)
1
65
Preparation
Preparation
Preparation
HEAD
GNDAL
1930
9034
PB-
1
9154
LEVEL
18
TDA5241
3160
3606
1
7300
1
8 5
1 4
1
Lum. Ampl.
3031
check
LA71520F
7007
25
41
5VASW
5001
7460
9
SAA1310
10
LED
6460
DECK ELECTRONIC
FTA
16 7
7466
LM339
7860
14 8
WTR
7464
20
TMP91C642
7400/7401
1 33
52
25
41
Adjust voltage to 5.3V
Observe the instructions for Level 53 (see page 2-5).
Terminate the Service Test Programme (see page 2-4).
Observe the instructions for Level 51 (see page 2-5).
Terminate the Service Test Programme (see page 2-4).
Enter VCR option code (see Level 40, see page 2-5).
Terminate the Service Test Programme (see page 2-4).
Observe the instructions for Level 52 (see page 2-5).
Terminate the Service Test Programme (see page 2-4).
Adjustment Procedures
1944
8 5
1
10
1 4
9
7354
MC44603P
9 8
1
18 1
1
SOC1012T
6
1
+5V
Transformer
TAS
7462
18
3379
10 11 12 13 14 15 16 17 18
POWER
SUPPLY
(DE)
(PS)
INIT
SWIN (HP1)
1480
1350
T100mA
9071
TRIV
9070
1945
1
Adjustment Procedure
±
0.03V with R3379.
Adjustment Procedure
(only for stereo VCR)
Adjustment Procedure
1353
T1,25A
4 1 7
5353
1355
T1A
1351
T500mA
1356
T1A
1352
T500mA
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