32
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 3735…, TVR 3740…, TVR 5540…
stand by power supply
+123V
33V
SW 12V
SW 6V
MO B+
S B+
SENSE
V IN
INH
OCP
200V
ABL
EVER 6V
SC
42V (VFB)
16,5V (V)
HEA
TER
HV
FOCUS
SCREEN
14V
VCR ON
7
E
5
6
2
Controller
EVER 6V
Vertical
main power supply
Line Stage
55
DN03
DN02
9
D705
TV Signal Electronic
Keyboard Control Unit
(TM)
E 6V
12V
12V
FB
R572
D502
MONIT
OR ON
M B+
IN02
NC
43
98/99
NC
15
I702
Reset
Reset
Reset
IN04
11/37
NC
back up
Loading Motor
(DE)
HD
Audio
IF01
IN03
Controller
Drive Control / Clock &
Timer
DF07
SW 13
POW
DF03
power fail
DF02
DF01
T.REC.
REC.
PWR ON
ST-BY
I501 (TV)
SE-L
(TU2)
D1
14/707
R121/738
Tuner 2
(TU2)
D106
PWR DET.
KEY 1
KEY 2
IR INPUT
RL
Y SW
LY09
Y-CCD; C-CCD
(VS)
IY02
SE-L
(VS)
I
2
C-Bus
Head Amplifier
(HA)
7
8
R101
IY04
7
2/5
I601
7
8
V.SYNC
52
53
51
54
73
5
37
28
33
36
34
43
9
QC705
12
13
41
42
Clock
38
39
4
3
VCR Signal Electronic
7806
7812
7812
7806
TV Control / OSD &
Teletext
I701
(CO)
IR
Key Board
IN01
(DE)
IY03
I301
I901…903
V.DR+
V.DR-
P406
PA904
P405
P901
46
45
41
V.SYNC
H.SYNC
46
47
40
22
18
FB
PA901
PA805
P805
PN02
PN03
Mechanism
DRUM
CAPST
AN
(VS)
IY01
13
6V
5V
76
47/36
55/56
2
20
2
4
R580
I505
37
12
6/8
7
5
Q402
T401
6
3
5
3
9
D406
D405
RL
Y 2
I808
RL
Y SW
MON ON
Q403
2
18
D302
D301
D401
10
1
9
2
4
3/6/8
7
5
10
1
D812
D819
D815
D81
1
D814
D813
I802
I805
I804
I801
I807
D831
I806
RL
Y1
RL
Y1
D823
D830
D825
…
D828
D801
…
804
D807
D808
R804
D810
9
7
6
5
4
1
3
4
8
11
16
14
10
13
12
9/15
R801
L901
PAF01
U101
U102
I201
IF 2
(TU2)
IL01
IL02
Tuner 1
(VS)
8
7
9
6
5
1 1 1 1
3
4
2
8
7
9
6
5
1
3
4
2
PA405
PA406
CRT
8
10
7
6
1
4
P904
2
7
27
3
1
2
1
6
1
6
3
4
5
3
4
5
2
3
4
2
3
4
Degaussing coil
P801
P802
F801
L801
D1
11
2
!
!
T801
R817
R834
R833
!
C819
!
!
Q803
C823
!
C840
45
T802
!
Power
Chassis
(PS)
E 6V
71
69
68
41
40
44
3
2
3
1
R701
17
(TV)
RN53
R506
R504
12
12
6
7
17 5
59
60
64
63
!
!
!
Q401
!
!
T402
!
!
R419
U101/102-(5/6)
2
38
39
EEPROM
I703
(CO)
14
R413
R836
2
2
3/4
3/4
IR INPUT
2
3
FB
I
2
C-Bus
7
8
6
5
SCL
SDA
SYS-D2
SYS-D1
SYS-CLK
PF01
Signal
Chassis
(CO, HA, DE,
TV
, TU2, VS)
I506
Q516
D521
Blockschaltplan – Netzteil/Digital / Block Circuit Diagram – Power Supply/Digital
Ref
erence
Oscillograms
....
4-22
PS
......................
4-5
CR
T
...................
4-7
CO
...................
4-1
1
HA
...................
4-12
DE
...................
4-13
TV
....................
4-15
TU2
..................
4-17
VS
....................
4-19
TM
...................
4-21
