Beko 16 schematic
16.1 CTV CHASSIS
ZA4.820
IC401
+5V A
1
8
E0
VCC
C439
C404
2
7
47u/16V
E1
MODE_WC
47nF
3
6
E2
SCL
5
GND4SDA
24C08
SCL
+5V_AL
+5V A
L402
18uH
C434
R410
R409
22uF / 16V
+5V_AL
470R
1K
T401
R417
330R
P3
S401
TSOP1738
P2
IR_IN
+5V_AL
SDA
SCL
BOSD
GOSD
ROSD
FBOSD
SDA
SCL
CVBS_TXT/U
SW901
X901
S901
431
1
2.5 A
R961
470K
2
2
POWER SWITCH
2 WAY PLUG
C922
xx pF
R907
820K
C921
R909
680pF
3K3
R908
820K
D907
R918
1N4148
C912
33K
2.2uF
25V
BC858B
R401
10K
ZD406
3V9
R424
C411
5.6K
22uF / 16V
P1
R449
X401
220R
1
C447
220pF
2
3
SW402
R406
4
4K7
R453
5
4k7
R403
2K2
SW403
R452
0R
R402
C451
4K7
100n
SW404
R446
100K
C440
100p
C452
X402
100p
1
2
+5V A
R440
R451
3
100R
4K7
4
SERVICE_PLUG
5
+5V_AL
R408
R407
4K7
4K7
R448
100R
R447
100R
+5V A
L404
R421
18uH
2R2
C407
C418
1nF
10uF / 16V
C401
47nF
R420
2R2
R415
C408
C419
5K6
4n7
22p
L901
C901
R902
C902
100nF
250Vac
220nF
R901
LINE FILTER
PTC
250Vac
5R1 NTC
R911
C917
560K %1
1n 1KV
R922
560K %1
D901
C903
R912
1n 1KV
RF2007
220K
C911
R913
120pF
2M2 1W
D908 1N4148
IC901
2
8
11
13
14
C916
4
3n9
3
C914
C909
2n2
TDA16847
63V
12
10nF
63V
10
7
6
9 1
5
C910
R904
47nF 63V
39K
R915
C913
22K
2n2
63V
R914
820R
SDA
D418
R413
LED
4k7
1
P2.0-IRin
2
RESET
3
P0.7
C448
100n
4
P0.6
C449
100n
5
P0.5
6
P0.4
7
P0.3
8
P0.2
9
P0.1
10
P0.0
11
P3.7
P3.6
12
13
P3.5
14
P3.4
15
P3.3-B
16
P3.2-G
17
P3.1-R
18
P3.0-FB
19
P5.1-SDA
20
P5.B-SCL
21
VCC
22
TEST
23
WSCF
24
WSCR
25
AVDD3
26
TEST1
27
MCFM
TEST228TXCF
C915
100nF
250Vac
D902
RF2007
D904
RF2007
D903
RF2007
R906
15R
R450
2K2
R411
T406
470R
BC848B
C436
10uF / 16V
R429
R425
4K7
680R
R435
IC402
8K2
R434
C444
4K7
56
47pF
P2.1
R438S
55
P2.2
8K2
R432
C445
54
4K7
P2.3
47pF
53
P2.4
C413
52
P2.5 VS
39pF
Q401
R431
51
4MHz
XX R
OSC in
C412
50
39pF
OSC out
49
MUTE
C443
100p
48
ST-BY SPKR
47
P4.5
C442
R404
46
R414
P4.4
10K
10K
100p
45
P4.3
R422
44
P4.2
C441
4K7
100p
43
P4.1
C453
100p
42
P4.0
41
VSYNC
C437
560pF
40
HSYNC
C450
33pF
39
C420
AVDD
47nF
R416
38
PXFM
C409
C424
5K6
4n7
22pF
37
TEST5
36
GND0
35
GND
C421
34
CVBS1
470nF
C414
33
+5V A
CVBS2
82pF
L403
32
TEST4
18uH
R419
31
AVDD2
C416
2R2
10uF / 16V
C402
30
TEST3
47nF
R412
29
15K
C415
ST92195
2n2
X902
1
DEGAUSS
2
2 WAY PLUG
C918
C906
C905
1n 1KV
33nF
R903
68uF
400V
2W
68K
630V
D905
C904
RGP10J
D
1n 1KV
T901
G
SPP03N65
C907
(2SK2545)
470pF 2KV
S
D906
ZD901
R921
C908
47R
1N4148
5.1V 1/4W
47uF/16V
16V
T902
R910
C919
330nF
D909
33K
1N4148
BC327
R905
10K
R916
15K
C923
R917
6.8K
56pF
P901
5K
STEREO MODUL
+8V
C142
10uF / 16V
CVBS_TXT
CVBS_TXT/U
V_AMP
FBOSD
C197
ROSD
C198
GOSD
C199
BOSD
C201
R151
100K
SDA
SCL
LFB
H_OUT
V_OUT
BCL
T111
BC848
T\U+2584PLER
20"SS
20"EK
20"TH
21"SS
21"NO
21"TH
21"LG-PH
21"PH
21"TH/PF
NOT: * ile isaretlenen degerler tip veya DST versiyonuna göre degisebilir.
The values marked with asterisk may change with the CRT or DST version.
X315
1
MSP_RES
+8V A
2
SCL
IC315
3
78L05
SDA
IN
OUT
4
GND
5
INTRC/QSS
6
STEREO_2_IN
7
C375
RIGHT
C344
C317
C323
220nF
8
LEFT
47uF
47nF
C315
+8V A
C504 C450
220uF
220uF
470uF
470uF
470uF
470uF
470uF
470uF
C316
C318
47nF
1nF
C338
100uF / 16V
C339
100uF / 16V
C340
330nF
C321
1nF
CRT BOARD
-
-
-
-
-
-
33pF1000uF
-
1nF
16V
C336
C337
47pF
47pF
+8V A
R318
R315
3.3K
330R
T315
MSP_RES
T318
BC558
BC858B
C325
1nF
R319
R316
3.3K
330R
T316
BC558
C327
T319
1nF
BC858B
R317
3.3K
T317
BC858B
C329
1nF
R320
C341
3.3K
330nF
T320
C322
BC858B
1nF
C331
1nF
155V
R710
15k
T701
BF422
C701
R702
47p
220R
R711
390R
R707
220R
Red
X701
R706
RGB
1
220R
2
3
crt
R703
4
Green
5
220R
6
C706
47p
Blue
R716
8V_
390R
Icatch
R720
15k
R704
220R
C709
47p
R721
390R
C554
C555
C564
9.1nF
390nF
470uF
8.2nF
390nF
470uF
5.6nF
390nF
470uF
6.2nF
390nF
220uF
7.5nF
390nF
220uF
*6.8nF
390nF
220uF
8.2nF
390nF
220uF
8.2nF
390nF
220uF
220nF-
7.5nF
220uF
9
+8V C
C374
100nF
100uF
16V
X316
1
RIGHT
C319
1nF
2
C320
3
1nF
LEFT
HEADPHONE
RIGHT
LEFT
U1
C557
118V
470uF 220uF
119V
470uF
118V
470uF
115V
470uF
117V
470uF
112V
470uF
118V
117V
470uF
125V
470uF
C346
220pF
100R
R321
R322 100R
R323
220R
R324
1K
C324
1nF
R325
C326
1K
1nF
R326
C328
1K
1nF
R327
C330
1K
1nF
C702
10u/250V
R728
100k 1/2W
155V
8V_
R713
2.7k
C703
390p
R712
100R
crt
crt
155V
R715
15k
8V_
T703
R718
2.7k
BF422
C707
390p
R717
100R
crt
crt
155V
8V_
T705
R723
2.7k
BF422
C710
390p
R722
100R
crt
crt
R701
100R
D950
C565
RGP10J
330pF
RGP10J
-
RGP10J
1.5nF
RGP10J
*1.5nF
RGP10J
RGP10J
*1nF
RGP10J
330pF
RGP10J
RGP15J
-
IC316
1
64
AUD_CLO
NC7
2
63
NC1
XTAL_OUT
3
62
NC2
XTAL_IN
C342
4
61
DCTROUT1
TESTEN
C343
2.2nF
5
60
DCTRO0
ANA_IN2+
6
59
2.2nF
ANA_IN-
ADR_SEL
7
58
ANA_IN1+
STBYQ
8
57
AVSUP
NC3
9
56
SCL
AVSS
10
55
MONO_IN
SDA
11
54
VREFTOP
I2S_CL
12
53
SC1_I_R
I2S_WS
13
52
I2SDAOUT
SC1_I_L
14
51
I2SDAIN1
ASG1
15
50
ADR_DA
SC2_I_R
16
49
ADR_WS
SC2_I_L
17
48
ADR_CL
ASG2
18
47
DVSUP
SC3_I_R
19
46
DVSS
SC3_I_L
20
45
I2SDAIN2
ASG4
21
44
NC4
SC4_I_R
22
43
C347
NC5
SC4_I_L
100nF
23
42
NC6
AGNDC
24
41
RESETQ
AHVSS
25
40
DACA_R
CAPL_M
26
39
DACA_L
AHVSUP
27
38
VREF2
CAPL_A
28
37
DACM_R
SC1_O_L
29
36
DACM_L
SC1_O_R
30
35
DAC_C
VREF1
31
34
DAC_SUB
SC2_O_L
33
DAC_S32SC2_O_R
MSP34XX
D701
1N4007
4
n.c.
R709
220R
D702
5
1N4148
G1
R725
6
C705
1.5K
R714
1k
GREEN
470p
G2
T702
BF421
D703
R726
1N4148
1.5K
C708
R719
1k
470p
T704
BF421
AQUA SMPS
D704
R727
1N4148
1.5K
C711
R724
1k
470p
T706
BF421
C713
100n/250V
L551
R509 R510 R520 R527 R560 R563 R563 R568
70uH
1.5R
100R
1K
70uH
1.5R
100R
100K
70uH
1.5R
100R
1K
*55uH
1.2R
*47R
*1K
120uH
1.5R
100R
1K
*55uH
1.2R
*100R
100K
*55uH
1.2R
100R
100K
70uH
1.2R
100R
1K
100uH
1.2R
100R
2.7K
C352
1.5pF
Q315
C353
1.5pF
18.432MHz
C354
C355
10nF
C357
10nF
INTRC/QSS
100pF
C345
C356
C373
33nF
33nF
47uF
16V
MONOIN
C349
C358
C372
C333
1nF
10uF
100nF
C359
63V
4.7uF / 16V
4.7uF / 16V
C360
Optional
X317
C361
4.7uF / 16V
4.7uF / 16V
C332
1nF
C363
330nF
C364
1nF
C348
C365
3.3uF
50V
C368
47uF / 16V
C369
47uF / 16V
C370
C371
47uF / 16V
47uF / 16V
X703
CRT SOKET
GND
12
9
7 8
RED
G2
C712
2.2n
155V
crt
680K
0.47R
680K
0.68R
680K
0.68R
680K
*0.22R
680K
1R
*680K
0.22R
*680K
*1.5R
470K
1.8R
680K
0.68R
12
X318
C362
11
R328
1
R
10
R337
470R
330nF
2
0R
9
R345
3
L
8
R338
470R
CINCH
0R
7
6
R335
5
C334
C335
0R
1nF
1nF
4
100nF
3
C366
+8V C
2
10uF / 63V
1
C367
10uF / 63V
GND
BLUE
11
10
HT
HT
X702
CRT
1
2
3
R706\R707
R917
8.2K
6.8K
8.2K
6.8K
6.8K
6.8K
6.8K
8.2K
7.5K
R923\R924
9.1K
1K
-
6.8K
9.1K
9.1K
7.5K
7.5K
7.5K
7.5K
9.1K
7.5K
1.5R
1K
-
6.8K
1.5R
1K
-
6.8K
1.5R
*1K
-
6.8K
-
1K
141222/220R
6.8K
-
*470R
-
8.2K
-
470R
-
6.8K
-
470R
-
6.8K
-
680R
-
4.7K
-
L-L'
+5V B
R186
C184
10K
68pF
TU100
TUNER
AGC
SCL4SDA5+5V6+5V7NC8+33V9IF110IF2
123
R436
4K7
C433
R437
1nF
39K
R442
220R
R441
220R
C432
C431
47pF
47pF
AGC
SDA
SCL
SCL
SDA
VSYNC
HSYNC
INTRC/QSS
X103
1
2
3
4
5
STAT1
+8V
6
Right
7
Left
8
STAT2
9
OPTIONEL
C446
100p
R405
C405
2K7
10nF
R433
2K7
C410
2u2 / 16V
T402
BC848
R418
2R2
TR901
2
1
6
5
10
14
9
13
R920
4M7 0.5W
C920
2n2 400V
STEREO_2_IN
MSP_RES
OFF (ST-BY)
+5V B
V_LIN
L_L'
+8V
R423
10K
AV3 SVHS
OPTIONEL
MSP_RES
C950
220pF 1KV
L950
D950
50uH Choke
RGP10J
C951
47uF 160V
IC951
LM317T
OUT
IN
ADJ
C962
47nF
D951
S902
FUSE
RGP50D
C954
25V
1000uF
R958
22R 0.5W
C963
47nF
+13VA
+5V A
R444
10k
R443
R426
4k7
T403
4k7
BC848
R445
10k
R427
R439
2k7
2k7
T404
BC848
R430
R428
2k7
2k7
SK101
out
C156
220p
B_SCRT
STAT1
C148
220p
G_SCRT
R_SCRT
F_BLSC
R152
R153
75R
68R
CVBS_OUT_SC1
CVBS1
R154
SCART
75R
in
C164
220p
STAT2
C149
220p
R174
75R
R157
CVBS_OUT_SC2
68R
SC2 CVBS
R158
SCART
75R
SC2 CHR
OPTION
V_LIN
OFF (ST-BY)
+33V
R950
39K 0.5W
ZD570
C961
33V
47nF
U1
C953
33uF / 160V
0 PAD
KABLO2
C955
47nF
R923
2R2
C956
4.7uF
+13V
+8V
C964
C965
47nF
22uF / 16V
T950
+5V B
BC337
R956
5R6
R953
C967
240R %1
C966
R957
47nF
10uF
16V
100R
R954
T906
ZD952
1K3 %1
BC848B
5.6V
R919
3K9
+13VA
+5V A
IC953
OUT
IN
78L05
GND
R940
option
C957
16V
10uF
C958
C941
R941
16V
47nF
1nF
100R
15
GND4
14
GND3
13
GND2
12
GND1
11
+33V
C429
560pF
+5V B
L401
18uH
C435
C430
10nF
47uF
C438
16V
560pF
+13VA
C384
C385
1000u/16V
100n
Vcc
3
16
R354
C375
Out1+
In1-
8
4
47n
2k2
C373
1n
C374
1n
R355
2k2
C425
1u/16V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
161820
21 19 17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
161820
21 19 17
R
C380
R356
4k7
R164
75R
R203
0R
R201
0R
C501
220nF
X501
1
2
VER_DEFL
22R
C383
1.5n
100n
C376
In1+
6
R359
47n
C377
In2-
47n
C379
R357
1.5n
4k7
C378
In2+
47n
Mode
Svr
R163
75R
R166
75R
R168
330R
R208
330R
IC501
TDA8174AW
1
R501
2R2 0.5W
C551
2n2
R502
470R
R503
R508
1K8
0.5W
R511
2K7
X320
4R7/0.5W
Right
4
Out1-
1
R
9
12
10
11
C386
10u/16V
R159
330R
R161
330R
R169
100R
C158
1nF
R171
100R
C160
1nF
R172
1K
C162
220p
R173
1K
R504
0.5W
C503
1000uF / 35V
T501
BC848B
3
Left
2
1
Out2+
17
IC317
L
C382
100n
TDA8944J
R358
4R7/0.5W
Out2-
14
L
2
15
HS301
Gnd
SES SOGUTCUSU
KABLO5B
1
2
R160
100R
C150
C151
1nF
1nF
R162
100R
C152
C153
1nF
1nF
R165
1K
C154
C155
X102
220p
470p
12
R167
C157
11
470p
1K
10
9
8
7
6
R202
5
C159
0R
4
1nF
3
R209
2
KABLO5A
0R
1
C161
1nF
STEREO_1_OUT
C163
470p
C165
470p
INV9BUFFER8RAMP7GND6VREF_DEC5H_ADJ4TRIG3OUT2PWR
VCC10FLYBACK
C511
11
1uF / 16V
D503
R513
10uF
16V
C506
10K
R506
1K
150K
C508A
C508
C509
R518
15nF
33nF
470pF
C505
82K
R505
D502
150K
1uF
16V
C513
C510
RF2007
100nF
100uF
50V
R512
+13V
1K8
R509
TABLE
R519
R521
R516
1K
100K
1K6
R524
C504
TABLE
T502
3K9
220uF / 25V
BC848B
C512
R510
TABLE
R520
1uF
16V
1K
T109
BC848B
IF2
IF2
IF1
IF2
IF1
AGC
INTRC/QSS
CVBS_TXT
C188
10n
L_L'
OPT. 2 . SCART
FLAYBACK
R522
VSYNC
8K2
R523
2K2
+13V
V_AMP
R554
82R 3W
C571
47u/16v
V_OUT
H_OUT
R527
TABLE
C185
C186
F102
R192
R196
T40.4
3K3
0R
220nF
220nF
R195
0R
C187
1nF
R185
100R
R193
2K2
R194
100R
R200
0R
C106
16V
10uF
R106
47R
T101
BC848B
R117
1K
R113
47R
R121
100R
BC848B
R553
330R
R552
1K
SAW02
TABLE
D180
1
BA682
R190
3K3
D181
BA682
T105
BC848B
+8V
R107
47R
T102
C107
C102
10uF
10nF
63V
R125
180R
R114
100R
R129
220R
C144
C104
10nF
10uF/63V
T104
R127
1K
C552
10uF
L502
50V
6.8uH
T551
STX112
R551
33R
4
R191
10K
2
5
3
T108
BC848B
SAW01
TABLE
1
L104
L104A
1uH
1uH
2
3
L103
1uH
C131
820p
+5V B
C132
3n9
+8V
C112
820p
L106
1uH
R108
R104
47R
C180
Non L-L'
TABLE
T103
C111
C140
C169
1n
10n
10uF
25V
L105
R126
R124
180R
TABLE
150R
L107
TABLE
C141
F101
BC848B
TABLE
1uF / 16V
TABLE
CVBS1
R105
Non L-L'
R131 330K
C137
1uF / 16V
CVBS_OUT_SC1
B_SCRT
G_SCRT
R_SCRT
F_BLSC
OPTION 2SC+FAV
SC2 CHR
CVBS_OUT_SC2
SC2 CVBS
AV3 SVHS
CHR
X104
SVHS
1
2
3
C193
100p
VIDEO
X551
HOR_DEFL
R557
470R
C565
0.5W
L551
xx
LIN.HOR.
C566
560pF
500V
C555
6.8nF
C553
TABLE
1uF / 160V
T552
BU808DFI
R555
47R
D552
R558
0.5W
BA157
10K
IC101
1
56
SIFIN1
FMCAP
C103
1uF / 16V
2
55
SIFIN2
AUDIOOUT
L-L'
C143
3
54
AGCSIFCAP
GND0
IFVREF
AGCPIFCAP
PIFIN1
PIFIN2
AGC
IFPLL
GNDIF
QSS
VCCIF
INTCVBSO
EXTAUDIN
PIFLC1
PIFLC2
VCC2
CVBSIN1
GND2
CVBSIN2
BS
Y_CVBSIN3
CHR
APR
B_EXT
G_EXT
R_EXT
FB_EXT28NC
STV2246
R176
4K7
C172
22nF
IC102
1
Y1
2
Y0
3
Z1
4
ZOUT
5
Z0
6
EN
7
VEE
8
VSS
LFB
TR552
9
6 7
1
DST 12.3
R560
TABLE
0.5W
C127
C115
+5V B
100uF / 16V
47nF
L102
53
VCCD
LBF_SSC
HOUT
BCLSAF
CVBSO1
GND1
VAMP
XTAL1
XTAL2
XTAL3
FBOSD
GOSD
ICATH
R_OUT
G_OUT
B_OUT
10uF
MC14053BD
0R
+5V A
600M
HEATER
10uH
R118
52
SDA
SLPF
VERT
VCC1
CLPF
ROSD
BOSD
C170
16V
CONT_X
CONT_Y
CONT_Z
FOCUS
UG2
11
GND2
BCL
3
U CRT
Uv.bes
1052
Uv.ref
C133
100R
R119
22pF
51
SCL
100R
R122
50
R133
R134
C178
560p
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
R137
32
270R
R136
31
270R
R135
30
270R
29
C168
100nF
C192
10nF
16
VDD
15
YOUT
14
XOUT
13
X1
12
X0
11
10
9
R2050RR181
HSYNC
D559
+13V
EHT - 29KV
D553
R569
4R7
RGP10J
C557
470uF
50V
D560
RGP10J
C564
TABLE
16V
R130
C130
2K2
8K2
56K
8K2
2u2
C128
4n7
16V
R132
2K2
R116
470R
D107
C126
+8V
1N4148
22uF / 16V
C135
C124
220uF
100nF
16V
R128
1K2
R140
1K
+5V B
D103
R187
R101
330KR188
Q101
C129
27K
330K
4.43MHz
4n7
C125
1uF / 16V
R115
Q102
5K6
3.58MHz
R123
C119
5K6
47pF
R109
100nF
470R
R146
1K
C116
47nF
R138
47K
+8V
R206
0R
R565
10K
R563
TABLE
C562
100nF
R562
10K
C563
100nF
LINK
47pF
R110
470R
R145
C118
1K
47nF
47pF
R111
C117
47nF
470R
R144
X101
R112
1K
1
47pF
1K
2
3
4
5
6
+8V
CRT_RGB_OUT
R207
0R
OPTIONEL
+8V
R150
T110
R149
470K
BC848
C183
100K
R198
C190
47K
10u/50V
2.2uF/16V
R199
10K
FLAYBACK
BCL
C570
10nF
D558
R564
680R
D557
1N4148
R526
22K
X552
1
C560
C561
2
1n 1kV
3
10uF
250V
D556
4
BA157
CRT_HT_OUT
C558
10nF
R568
680R
1uF / 16V
4
C105
C108
10uF / 16V
22nF
5
C101
4
1uF / 16V
6
7
5
8
C145
C179
47u/16V
22n
R102
9
C110
C109
150R
1nF
330nF
10
L-L'
R142
11
C113
C114
220R
47nF
47uF
12
16V
L101 10uH
R120
13
1K
R139
3K3
27p
14
TOKO
15
BC848B
16
LC100
+8V
17
C123
47nF
C134
18
C175
10uF / 16V
100p
19
C196
10n
20
C136
C139
1uF / 16V
C176
21
100p
C191
1uF / 16V
10n
C138
22
1uF / 16V
C177
100p
23
C166
C200
68p
22nF
24
R189
C120
25
100nF
100R
R184
C122
26
100nF
100R
R183
C121
27
100nF
100R
R182
100R
R175
C167
4K7
100nF
C171
22nF
R179
47K
R180
47K
R177
47K
R178
47K
C195
10n
C194
C173
10n
C189
100p
2.2uF
16V
C174
2.2uF
16V
5
4
3
2
U1
R559
1
3.3R
2W
C556
330nF
250V
C554
250V
390nF
Text
Text
Subject to change without notice
CONTENTS PAGE
Safety Instructions 2
Technical Specifications 3
Block Diagram 4
Pin Voltages of IC’s 5
Oscillograms 8
Electrical and Service Adjustments 12
Part List 15
Circuit Diagrams Attac hed
SAFETY INSTRUCTIONS
GENERAL GUIDELI NES
1. I t is advised to insert an isolation transformer
in the AC supply before servicing a hot
chassis.
2. Potentials as high as 33KV are present when
this receiver is in operation. Operation of the
receiver without the rear cover involves the
danger of a shock hazard from t he receiver
power supply. Servicing should not be
attempted by any one who is not
competent with the precautions necessary
when working on the high voltage
equipment. Always discharge the anode of
the tube.
3. When servicing observe the original lead
dress in the high voltage circuits. If a short
circuit is found, replace all the parts which
have been overheated or damaged by the
short circuit.
4. Always use the manufacturer’s replacement
safety components. The critical safety
components marked with
on the
schematics diagrams should not be
replaced by other substitutes. Other
substitute may create the electrical shock,
fire or other hazards. Take attention to
replace the spacers with the originals.
Furthermore where a short circuit has
occurred, replace those components that
indicate evidence of overheating.
5. After servicing, see that all the protective
devices such as insulation barriers, insulation
papers, shields and isolation R-C
combinations are correctly installed.
6. When the receiver is not being used for a
long time of period of time, unplug the
power cord from the AC outlet.
7. After servicing make the following leakage
current checks to prevent the customer
from being exposed to shock hazard.
LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper
between the two prongs of the plug.
2. Turn the receiver’s power switch on.
3. Measure the resistance value with an
ohmmeter, between the jumpered AC plug
and each exposed metallic cabinet part on
the receiver, such as screw heads, aerials,
connectors, control shafts etc. When the
exposed metallic part a return path to the
chassis the reading should be between
4Mohm and the 20Mohm. When the
exposed metal does not have a return path
to the chassis, the reading must be infinite.
LEAKAGE CURRENT HOT CHECK
1. Plug the AC cord directly in to the AC
outlet. Do not use an isolation transformer
for this check.
2. Connect a 2Kohm 10W resistor in series with
an exposed metallic part on the receiver
and an earth, such as a water pipe.
3. Use an AC voltmeter with high impedance
to measure the potential across the resistor.
4. Check each exposed metallic part and
check the voltage at the each point.
5. Reverse the AC plug at the outlet and
repeat each of the above measurements.
6. The potential at the any point should not
exceed 1.4 Vrms. In case a measurement is
outside the limits specified, there is the
possibility of a shock hazard, and the
receiver should be repaired and rechecked
before it is returned to the customer.
HOT CHECK CIRCUIT
TO INSTRUMENTS
EXPOSED
METALLIC PARTS
AC-Voltmeter
Water pipe
(earth)
2 K Ohm
Figure 1
X-RAY RADIATION WARNING
The primary source of X-ray radiation in this receiver
is the picture tube. The chassis is specially
constructed to limit X-ray radiation. For continued
X-ray radiation protection, replace the tube with
the same type of the original one.
CAUTION
AFTER REMOVAL OF THE ANODE CAP, DISCHARGE
THE ANODE OF THE PICTURE TUBE AND THE ANODE
CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE
CARBON PAINTED ON THE CRT WITH A HIGH
VOLTAGE PROBE AND MULTIMETER (SELECT VDC)
AND THEN SHORT CIRCUIT DIRECTLY TO DISCHARGE
COMPLETELY.
TECHNICAL SPECIFICATIONS
Power source: 220-240V AC, 50-60Hz
Power consumption (max.) : 115 W 20”, 21” (110W for 21” PF)
Standby power consumption : 4 W
Aerial impedance : 75Ohm, coaxial type
Receiving system
PAL SECAM BG
PAL SECAM BG DK
PAL SECAM BG LL’
PAL I
Receiving channels: VHF BAND I CH2-4
VHF BAND III CH5-12
CABLE TV S1-41
UHF BAND CH21-69
Audio outputs : 2 x 7W RMS at %10 THD
High Voltage : 25 ± 0.5 KV 20”, 21”
Focus voltage : %25.6 ± %38 of EHT
Grid 2 voltage : 0-1400 V
Heater voltage : 6.2 ± 0.2 Vrms
Video/Audio Terminals : AV1 IN Video : 1 Vpp,75 Ohm
Audio : 0.5 Vrms, >10 Kohm
RGB
AV1OUT Video : 1 Vpp, 75 Ohm
Audio : 0.5 Vrms, <1 Kohm
AV2 IN (optional) Video : 1 Vpp,75 Ohm
Audio : 0.5 Vrms, >10 Kohm
AV2 OUT (optional) Video : 1 Vpp, 75 Ohm
Audio : 0.5 Vrms, <1 Kohm
AV2 IN (RCA, optional) Video : 1 Vpp, 75 Ohm
Audio : 0.5 Vrms, >10 Kohm
Operating temperature : 0-45 Degrees
Safety : IEC 65 /BS P2N
X-Ray radiation : ACC. IEC 65/BS P2N
1
: TV set is produced to receive “one” of these colour and sound systems.
1
: PAL BG
Left
HP
CPT
Right
HP
On/off
(Standby)
from IC401
8VA
7/14
1
1/4
RGB
5VB5VA-13V+13V
IC317
Left
29
Audio
TDA8944J
9/12
IC316 MSP34X0G
Audio Processor
24
MSP Reset
IC901
TDA16847
Power Supply
16.1 Block Diagram
Amp.
10
T705
Mute (from pin 49
of IC402)
6/8
CRT
T701, T703,
Module
T706
T702, T704,
Horizontal
Deflection
BU808DFI
220V AC in
U1=114V, 33V
Right
28
Mono in /
Aud out
11
Intr/
QSS
13
91058 55
8
RGB
PIF
30-32
out
6
7-
I2C 51-52
Black
44
H-Out
H-Sync/LFB
33
48
IC101 STV224X
SIF
1-2
34-37
49
20/13
47
42
22/23
V-Out
.
V-Amp
IC501
TDA8174
Deflect
Vertical
V-Lin
IC102
Source
Select
V-Sync to IC402
IC316Audio
Tuner
IC316
Lum/Chroma
Video In/Out
Audio In/Out IC316
T105,T109
LL’ Switch
8
Scart 1
CVBS-TXT
OSD/TXT RGB out + Fast Blanking
L/L’
53
45
40
15-18
Microcontroller
IC 402 ST92195
8
41
55
147 56
43
20
AGC SCL SDA IF1 IF2
19
33
Audio In/Out
CVBS/Chroma
8
SVHS
Scart 2
IR
IC401
EEPROM
On/Off
(Standby)
To IC901
H-sync
V-sync
Keyboard
Receiver
PIN VOLTAGES OF IC'S
IC101 (STV2246)
BUS CONTROLLED MULTISTANDARD ONE CHIP TV PROCESSOR
Pin Connection V DC (*) Pin Connection V DC (*)
1
Sound IF Input 1 1,0
2
Sound IF Input 2 1,0
3
AGC SIF Capacitor 0,1
4
IF Voltage Reference Filtering 3,2
5
AGC PIF Capacitor 0,1
6
Picture IF Input 1 2,5
7
Picture IF Input 2 2,5
8
AGC Tuner Output 4,6
9
IF PLL Filter 1,2
10
IF Ground 0,0
11
AM/FM Mono Sound Output 4,2
12
5 V IF Supply 5,1
13
Internal CVBS Output 3,2
14
External Audio Input 2,5
15
LC Input 1 4,0
16
LC Input 2 4,0
17
Video/Luma Supply Voltage (8 V) 8,1
18
Internal Video Input 3,7
19
Video/Luma Ground 0,0
20
External Video Input 3,2
21
Black Stretch Capacitor 2,8
29
Not connected 3,9
30
Blue Output 2,3
31
Green Output 2,2
32
Red Output 2,3
33
Cathode Current Measurement Input 4,2
34
OSD Blue Input 4,7
35
OSD Green Input 4,8
36
OSD Red Input 4,7
37
OSD Fast Blanking 0,2
38
Cloche Filter Tuning Capacitor 0,1
39
3.5X MHz Crystal 0,4
40
4.43 MHz Crystal -
41
Chroma PLL Filter -
42
Vertical Amplitude DAC Output 4,0
43
Chroma/Scanning Ground 0,0
44
Second Video Switch Output 4,1
45
Chroma/Scanning Power Supply (8V) 8,1
46
Beam Current Limiter Control Voltage and
Safety Input (XRAY)
47
Vertical Output Pulse 4,0
48
Horizontal Output Pulse 1,4
49
Line Flyback Input and Super-sandcastle Output 0,7
6,8
22
Y/CVBSIN3 Y(SVHS) or CVBS3 External Input 3,2
23
Chroma (SVHS) Input 1,8
24
Automatic RGB Peak Regulation 5,0
25
External Blue Input 2,5
26
External Green Input 1,7
27
External Red Input 2,5
28
External Fast Blanking Input 0,0
50
Scanning PLL Filter 4,1
51
SCL I2C Bus Clock Input see osc.
52
SDA I2C Bus Data Input see osc.
53
Digital Supply Voltage (5 V) 5,2
54
Digital Ground 0,0
55
Main Audio Output 4,0
56
FM Demodulation Capacitor 1,5
IC316 (MSP 34XXG)- MULTI STANDARD SOUND PROCESSOR
Pin Connection V DC Pin Connection V DC
1
Not connected 2,3
2
Gnd 0,0
3
Gnd 0,0
4
Digital control input/output 0,0
5
Digital control input/output 0,0
6
Gnd 0,0
7
Standby
8
Not connected 4.9
9
SCL see osc.
10
SDA see osc.
11
Not connected 0,5
12
Not connected 0,5
13
Not connected 0,5
14
Not connected 0,5
15
Not connected 0,5
16
Not connected 0,5
17
ADR Bus Clock Output 0,5
18
Digital Circuitry Supply Voltage 4.9
19
Digital Circuitry Supply Ground 0,0
20
Not connected 0,5
21
Not connected (Ground) 0,0
22
Not connected (Ground) 0,0
23
Not connected (Ground) 0,0
24
MSP RESET input 5,1
25
Headphone sound output (R) 0,1
26
Headphone sound output (L) 0,1
27
Reference analog ground 0,0
28
Speaker output (R) 0.1-2.1
29
Speaker output (L) 0.1-2.1
30
Not connected 0.1-2.1
31
Not connected 0.1-2.1
32
Not connected 0.1-2.1
(in normal operation it must be high)
4.9
33
Scart 2 sound output (R) 3.7
34
Scart 2 sound output (L) 3.7
35
Reference analog ground 0,0
36
Scart 1 sound output (R) 3.7
37
Scart 1 sound output (L) 3.7
38
Volume capacitor Headphone 7,1
39
Analog Supply High Voltage (8V) 8,0
40
Volume capacitor Speaker 7,1
41
Ground for Analog Power Supply High Voltage 0,0
42
Internal Analog Reference Voltage 3.7
43
Scart 4 input (L) 3.7
44
Scart 4 input (R) 3.7
45
Analog Shield Ground 0,0
46
CINCH - sound input (L) 3.7
47
CINCH - sound input (R) 3.7
48
Analog Shield Ground 0,0
49
Scart 2 sound input (L) 3.7
50
Scart 2 sound input (R) 3.7
51
Analog Shield Ground 0,0
52
Scart sound 1 input (R) 3.7
53
Scart 1 sound input (L) 3.7
54
A/D converter ref. Voltage 2.5
55
Mono sound input 3.7
56
Ground for Analog Power Supply Voltage 0,0
57
Analog Power Supply Voltage (5V) 4.9
58
IF input 1 1.5
59
IF Common reference for IF IN1/IN2 1.5
60
IF input 2 0,0
61
Factory test mode enable (ground) 0,0
62
Crystal oss. input 2.3
63
Crystal oss. output 2.3
64
Not connected (Ground) 0,0
IC317 (TDA 8944J) Audio Output IC
Pin Connection V DC Pin Connection V DC
1
negative loudspeaker terminal 1 6,1
2
ground channel 1 0,0
3
supply voltage channel 1 12,4
4
positive loudspeaker terminal 1 6,1
5
not connected 0,0
6
positive input 1 6,2
7
signal ground 0,0
8
negative input 1 6,2
9
negative input 2 6,2
10
mode select.input (standby,mute,operating) 0,0
11
half supply voltage decoupling
12
positive input 2 6,2
13
DC gain control 0,0
14
negative loudspeaker terminal 2 6,1
15
ground channel 2 0,0
16
supply voltage channel 2 12,4
17
positive loudspeaker terminal 2 6,2
(ripple rejection)
6,2
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