Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 37…, TVR 51…, TVR 55…
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 37…, TVR 51…, TVR 55…
4 - 19
GRUNDIG Service
4 - 20
GRUNDIG Service
Leistungs-Chassis / Power Chassis TVR 51… (GSPD)
0,1V
33V-REG
5V-REG
5V-STBY
VER. STAGE
H-DRIVE AMP
TRA
LINE
Ubat
HOT PART
STBY
5Stby
Degaussing Coil
COLD GND
HOT GND
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
THE INPUT VOLTAGE SLOWLY, WHEN TROUBLESHOOTING THIS TYPE OF POWER SUPPLY
TRANSFORMER MUST BE USED. ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE
to Signal-Chassis (TV) 1909
to Signal-Chassis (TV) 1911
14M1
14/9M1
Ubat
Ubatlot
DEFLECTION
VERTICAL
HORIZONTAL
HDEF2
33A
5A
5D
14M2
VDR
VFB
HDR
HFB/SC
HDEF1
VDEFH
VDEFL
14M2
GND5D
GND5A
GNDTV
1
2
3
GNDM
GNDM
BECAUSE A HOT GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT, AN ISOLATION
290V
315V
2,7V
3V
13,5V
14,5V
2,5V
0,3V
2,6V
2,6V
0,5V
2,5V
2,5V
1,3V
2,4V
51
50
32V
2,5V
8,5V
4,1V
5,4V
5,4V
15V
81mV
45
2,3V
0V
2,3V
15V
0V
28V
30mV
8V
28V
48
34
47
0,47V
18V
0,95V
1,5V
4,9V
8V
82,7V
49
8
15V
0,1V
5V-SWITCH
3537 H31
3536 M19
3532 H31
3531 J28
3530 M20
3529 N27
3527 D22
3525 P25
3524 M28
3523 P26
3522 P26
3521 O27
3519 N27
3518 M26
3517 N24
3514 N24
3513 M22
3512 M22
3395 E16
3394 E16
3393 E14
3391 E14
3375 M14
3364 I15
3363 N 8
3362 O 8
3360 I14
3359 L 4
3358 N 8
3357 N 8
3356 M 8
3354 J18
3353 K18
3352 K17
3351 L16
3350 L18
3348 L 3
3347 K 9
3343 N16
3342 H 2
3341 K11
3339 I 9
3338 H 8
3337 D 9
3336 F11
3335 I 9
3595 I26
3334 I 9
3333 H 7
3331 G 9
3330 H 4
3328 I 2
3327 J 2
3324 K 2
3322 L 3
3313 D12
3312 D11
3592 I31
3310 B 9
3304 C 6
2594 G21
2593 D27
2592 J33
2587 E24
2586 F25
2583 H22
2582 M32
2581 H21
3591 C28
2575 F26
2573 E24
2555 N28
2553 M30
2552 G22
2551 K30
2520 N26
2519 O25
2517 N20
2516 M24
3588 H21
2515 N19
2514 L20
2513 M22
2512 K27
2392 J14
2381 H14
2379 K14
2378 L14
2377 I13
2375 M14
3587 E23
2374 H15
2373 G15
2371 G14
2362 F14
2353 K18
2352 L15
2351 K14
2341 L 4
2338 M 9
2337 L 9
3585 H22
2336 J10
2335 L10
2332 G11
2331 F10
2330 I 8
2329 H 2
2328 I10
2327 I 2
2325 J 2
2324 K 2
3584 M33
2323 K 2
2320 L 6
2316 E 7
2315 F 8
2314 D10
2312 C12
2309 I 8
2308 H 7
2305 E11
1926 K33
3582 L32
1925 C19
1924 C10
1923 M33
1922 P20
1921 C15
1371 H13
1311 E 5
1300 C 7
1013 E 2
1013 D 2
3580 H19
3579 M26
3578 L26
3577 G21
3559 P24
3558 N30
3556 P27
3555 M30
3554 M29
3553 N29
3551 K30
3538 I28
5373
5372
537
5370
5364
5363 E13
5362 E13
5361 D14
5354 H11
5353 H17
5352 H17
5351 D17
4
5
6
1
7
8
9
10
11
12
13
14
15
16
17
18
2
19
20
21
22
23
3
O
N
M
L
K
J
I
H
G
F
E
D
C
Q
B
P
4
5
6
1
7
8
9
10
11
12
13
14
15
16
17
18
2
19
20
21
22
23
3
2325
560p
1n
2312
2323
4n7
100n
2337
4n7
2338
470p
2328
1n
2305
1n
2314
2341
2n2
470p
2327
2329
330p
1n
2324
1n
2378
1n
2583
330p
2581
2n2
2515
470p
2371
470p
2381
2331
10n
470p
2332
4n7
2330
220p
2336
1n5
2377
470p
2351
100n
2552
100n
2594
10n
2517
1n
2514
2308
1n
2309
4n7
1n
2375
100n
2353
220n
2316
3343
10k
100E
3347
3312
3M9
68E
3333
390E
3364
3395
8k2
3394
100k
12k
3598
3337
2E
0E82
3334
20k
3357
10k
3356
3304
270E
18k
3322
100k
3324
10k
3330
5k1
3327
1k
3339
0E82
3335
33k
3328
10k
3342
180k
3348
330E
3359
6k8
3391
3352
820E
3351
2k7
2k2
3585
6k8
3393
680E
3513
3336
24k
270k
3331
390E
3360
3350
27k
33k
3587
3313
3M9
150E
3588
680E
3577
4k7
3580
12k
3596
5k6
3536
1k8
3530
3375
180E
20k
3362
5k9
3363
3353
1k
220k
3354
680E
3512
BYD33D
6336
BAV21
6582
1N4006GP
6316
1N4006GP
6314
1N4006GP
6313
1N4006GP
6315
BAV21
6335
BAV21
6334
BYD33D
6392
BYD33D
6374
BYV27-100
6371
BYW36
6361
BAV21
6513
BYV27-100
6372
BYD33J
6332
BAT85
6348
BYW98-200
6351
BAV21
6583
MPSA43
7584
BU1508DX
7583
BC547B
7351
BC547B
7587
9304
9308
9523
9517
9302
9303
9309
1311
T4AH
T2,5A
1371
10u
2392
100u
2335
68u
2315
2u2
2320
220u
2352
220u
2373
100u
2362
100u
2513
470u
2379
1u
2587
220u
2374
5312
UF2327
5581
CU15
3310
1
2
3
1924
1
2
5E6
3341
39E
3338
1k
3527
5351
80E
5370
80E
5373
22u
5354
80E
5350
80E
5361
33u
5363
80E
5371
22u
5352
22u
5353
22u
22u
5372
5374
22u
5364
80E
5362
80E
6343
BZX79-C9V1
6393
BZX85-C6V8
6352
BZX79-C15
STBY
STBY
VDEFH
VDEFH
-7V
9A
14H
5D1
VDEFL
14H
8
33A
14H
Ubat
GNDAU
5330
10
11
12
13
14
15
16
1
3
4
5
6
7
9
2
8
15
15
STP4NA60FI
7330
MTP3055E
7352
TL431CLP
7331
R
A
K
1300
5510
1925
1
2
3
4
5
6
TDA3653C/N2
7510
1
2
3
4
5
6
7
8
9
Driver
Thermal
Protection
GND
Protection
Output
Stage
Output Stage
Circuit
Guard
Current Source
Generator
Voltage Stab.
Flyback
&
4k7
3358
1921
1
2
3
4
5
6
7
8
9
10
11
12
13
7310
MC44603P
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
(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
Rref
Soft Start & Dmax
Iref
Vovp out
Vref
BUFFER
OVERVOLTAGE
MANAGEMENT
UVLO1
Vref
OVERVOLTAGE
PROTECTION
UVLO1
Vcc
Vcc
OUTPUT
GND
18V
Vc
CAUTION : LETHAL POTENTIALS AT PRIMARY
DO NOT OPERATE WITHOUT CASE
ISOLATION TRANSFORMER WHEN SERVICING
HOT CIRCUIT , BE CAREFUL AND USE AN
1922
1
2
3
4
5
7350
LM317T
5350 H10
3599 I24
3598 F22
3597 G25
3596 F22
5330 E11
5312 D 8
SWITCH PCB
1301
IN
OUT
1013
1013
1003
1
2
3
4
2
1
3302
4M7
9310
9311
1013
1013
52
43
33
46
