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 - 29
GRUNDIG Service
4 - 30
GRUNDIG Service
Leistungs-Chassis / Power Chassis TVR 5500 … (PLSP)
Ubat
HOT PART
OUT
VDR
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
BECAUSE A HOT GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT, AN ISOLATION
290V
329V
2,2V
2,3V
13V
13,5V
2,5V
0,3V
2,6V
2,6V
0,3V
2,5V
2,3V
1,3V
2,4V
50
4
5
1
6
7
8
9
10
11
12
2
3
M
L
K
P
J
I
H
G
F
E
D
C
B
A
O
N
4
5
1
6
7
8
9
10
11
12
2
3
75E
3347
3312
3M9
68E
3333
3337
2E
0E82
3334
20k
3357
9k1
3356
3304
270E
18k
3322
100k
3324
10k
3330
5k1
3327
1k
3339
0E82
3335
33k
3328
56k
3342
180k
3348
330E
3359
270k
3331
3313
3M9
20k
3362
5k6
3363
24k
3345
9318
9315
9314
9311
9310
9303
9309
5E6
3341
39E
3338
5354
80E
5350
80E
2325
560p
1n
2312
2323
4n7
100n
2337
4n7
2338
470p
2328
2n2
2305
2n2
2314
2341
2n2
470p
2327
2329
82p
2310
100n
1n
2324
2331
10n
470p
2332
4n7
2330
220p
2336
2n2
2301
2308
1n
2309
4n7
220n
2316
BYT54
6337
BYT54
6336
1N5062
6316
1N5062
6314
1N5062
6313
1N5062
6315
BAV21
6335
BYD33D
6334
BYT54
6332
BYV10-20
6348
100u
2335
68u
2315
2u2
2320
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
1301
IN
1013
1013
1003
1
2
3
4
2
1
3302
4M7
51
52
SWITCH PCB
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