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8 GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams TVR 37…, TVR 51…, TVR 55…
Leistungs-Chassis / Power Chassis (GSPD)
Hinweis:
Die Schaltungsänderungen sind der Service-Manual-Ergänzung, Sachnummer 72010-524.98, auf den Seiten 4-16, 4-19, 4-22 hinzuzufügen.
Note:
These changes in the circuit are to be added to pages 4-16, 4-19, 4-22 of the Service Manual Supplement, part number 72010-524.98.
2,4V
1,3V
13,5V
3V
0,1V
2309
4n7
330E
3359
180k
3348
18k
3322
BAT85
6348
9308
2u2
2320
39E
11
2
3
4
5
6
7
(REDUCED FREQUENCY)
AMP
ERROR
FOLDBACK
MANAGEMENT
OSCILLATOR
Iref
DEMAGNETICATION
Vdem out
STANDBY
2.5V
P
F
T
FOLDBACK INPUT
E/A OUT
R standby
Sync
R standby
VOLTAGE
C
FEEDBACK
Vdem in
CURRENT SENSE INPUT
Vosc
REFERENCE
Vref
BLOCK
Iref
enable
Vref
CURRENT
SENSE
Vosc prot
Iref
Dmax & SOFT-START
INITIALIZATION BLOCK
Set
Latch
Reset
SHUTDOWN
THERMAL
CONTROL
SUPPLY &
Q
Soft Start & Dmax
Iref
Vovp out
Vref
BUFFER
OVERVOLTAGE
MANAGEMENT
UVLO1
Vref
OVERVOLTAGE
PROTECTION
UVLO1
Vcc
OUTPUT
GND
18V
Vc
2340
82p
750E
3326
BAT85
6340
BC548B
7340
2E2
3325
7310
MC44603P
3326:
TVR 37...:750E
TVR 51...:820E
TVR 55...:1K
NEW
2,5V
9302
9304
470p
2364
470p
2381
470p
2371
39E
3361
3371
1k
BYV27-100
6372
BYW36
6361
BYV27-100
6371
T2,5A
1371
47u
2363
220u
2374
220u
2373
5365
80E
5371
5363
80E
5373
22u
5370
80E
12
13
14
15
15
TL431CZ
R
A
K
only TVR 37…
3372
1k
NEW
8


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