Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 3710 …, TVR 5100 …, TVR 5500 …
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 3710 …, TVR 5100 …, TVR 5500 …
4 - 25
GRUNDIG Service
4 - 26
GRUNDIG Service
Leistungs-Chassis / Power Chassis TVR 5100 … (PLSP)
50
51
2,4V
1,3V
2,3V
2,5V
0,3V
2,6V
2,6V
0,3V
2,5V
13,5V
13V
2,3V
2,2V
329V
290V
BECAUSE A HOT GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT, AN ISOLATION
TRANSFORMER MUST BE USED. ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE
THE INPUT VOLTAGE SLOWLY, WHEN TROUBLESHOOTING THIS TYPE OF POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
HOT GND
COLD GND
Degaussing Coil
VDR
HOT PART
SWITCH PCB
Ubat
4
5
6
1
7
8
9
10
11
12
2
3
N
M
Q
L
K
J
I
H
G
F
E
D
C
P
B
A
O
4
5
6
1
7
8
9
10
11
12
2
3
5k9
3363
20k
3362
3313
3M9
270k
3331
3336
24k
330E
3359
180k
3348
56k
3342
33k
3328
0E82
3335
1k
3339
5k1
3327
10k
3330
100k
3324
18k
3322
3304
270E
10k
3356
20k
3357
0E82
3334
3337
2E
68E
3333
3312
3M9
100E
3347
9309
9303
9310
9311
9314
9315
9318
39E
3338
5E6
3341
5350
80E
5354
80E
220n
2316
2309
4n7
2308
1n
2n2
2301
220p
2336
4n7
2330
470p
2332
2331
10n
1n
2324
2310
100n
2329
82p
470p
2327
2341
2n2
2n2
2314
2n2
2305
470p
2328
4n7
2338
100n
2337
2323
4n7
1n
2312
2325
560p
BYV10-20
6348
BYT54
6332
BYD33D
6334
BAV21
6335
1N5062
6315
1N5062
6313
1N5062
6314
1N5062
6316
BYT54
6336
BYT54
6337
2u2
2320
68u
2315
100u
2335
5330
1
3
4
5
6
7
2
8
STP4NA60FI
7330
DMF-2830
5311
1300
T2,5AH
1311
3310
1
2
3
1013
1013
1924
1
2
4k7
3358
SIQV-S10K300
3309
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
52
1301
IN
OUT
1013
1013
1003
1
2
3
4
2
1
3302
4M7
DC, 500mV/Div, 20
µ
s/Div
0V
IC7200-(37), Connector 1922-(4)
TV
33
DC, 1V/Div, 20
µ
s/Div
0V
IC7200-(38), Connector 1922-(5)
TV
34
AC, 1V/Div, 5ms/Div
IC7200-(43), Connector 1922-(1)
43
TV
DC, 1V/Div, 5ms/Div
0V
IC7510-(1)
TV
45
DC, 10V/Div, 5ms/Div
0V
IC7510-(5)
TV
46
DC, 200mV/Div, 20
µ
s/Div
0V
T7584 – Basis
TV
47
DC, 5V/Div, 5ms/Div
0V
IC7510-(8)
TV
48
DC, 5V/Div, 20
µ
s/Div
0V
T7583 – Basis
TV
49
DC, 10V/Div, 5
µ
s/Div
0V
Trafo 5330-(4), 5331-(4)
PB
50
DC, 2V/Div, 5
µ
s/Div
0V
T7330 – Gate
PB
51
AC, 500mV/Div, 10
µ
s/Div
IC7310-(10)
52
STANDBY
DC, 200V/Div, 20
µ
s/Div
0V
T7583, Collector
53
TV