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MODEL HT28745
Chassis No. 28745-00
To Video Board
(K25A)
To Main
Board
(K6PDD)
To VM
Board
(K17J)
To Main
Board
(K9FDB)
To Main Board
(K6PDA)
To Front Board
To Front Board
★
★
★
To CRT
Board
(K7C)
To CRT
Board
To CRT
Anode
To DY
★
★
★
★
★
★
★
★
★ ★ ★
★ ★ ★
★
★
★ ★
★
★
(K6M)
(K6F)
Vertical Drive
Voltage
Feedback
Horizontal Drive
Flyback Transformer
PCC
Oscillation
AC Smoothing
Switching
Transformer
P/D Board
(Power and Deflection)
(2SC5857)
PE
C423
C424
VRAMP–
VRAMP–
HOLD
DOWN
HOLD_DOWN
H_DRIVE
PCC
PCC
ABL
ABL
HGND
P-FAIL
P-FAIL
P-FAIL
P-FAIL
P-FAIL
P-FAIL
AFC
AFC
D512
TE7
2SJ
0.18
R615
D511
2SJ47K
R604
25EM
2200CD
C504
TJ1
160EM
470VCS
C624
–15V
EM220T
C507
TP51
200EM
680VCC
C609
TP50
16PM
10LBZA
C581
160EM47CY
C482
140V
EM220LBWA
C656
D581
160EM
220XK
C644
10K
R582
16EM2200MY
C405
1SS133
D582
16EM
3300
CD
C626
10K
R583
L414
25EM
3300CD
C622
D627
L413
EM3.3
C401
L624
L641A
35V
6.3EM
220LBWA
C421
ZZ0122
L464
EM470
LBWA
C642
16EM
3300
CD
C629
J
L502
1
2
3
DJ3.3K
R617
L463
EM4.7LBWA
C484
100PM
2.2X
C493
K6A
1
GND
GND
14V_DM
14V_DM
GND
GND
14V_TV
14V_TV
AGND
10
21V
160EM
470VCS
C628A
J
JP402
L621
K4D
1
PWR_SW
P-FAIL
5VAL
GND
5
31VTV
D501
J
L656
R
D429
J
L615
L623
D481
DJ150
R616
J
L631
D411
1000KK
470NH
C686
:1000KK
470CRD
:1000KK
470CTB
35V
R
D623
D625H1
1500MH
5100AN
C412
630NJ
0.01
EAQ
C463
630NJ
0.01
EAQ
C462
7SJ
3.9VCA
R413
K4GND1
1000KK
470NHA
C403
–15V
1000KK
150CRD
C408
TJ7
100GK
0.1P
C460
500CJ68G
C417
FK0.082BF
C471
FK0.082D
TE7-FCT
1000KK1000CTB
C641
:1000KK1000CRD
100GK
0.47P
C508
FK0.022BF
C472
:FK0.022D
IC602H1
1000KK470NH
C608
:1000KK470CRD
:1000KK470CTB
TJ2
3000KK
820NH
C415
L411
500CK
47GAA
C510
FK2200BF
C483
:FK2200D
FO
SC
HV
T402
1
2
3
4
10
5
AFC
11
6
7
13
8
LOW
+B
9
HEATER
250KM3300VBW
C633
:250KM3300VBBW
C625
100GJ
2.2P
C465
100GJ
2.2P
C464
100GJ
2.2P
C466
250GJ
0.47
C422
Q582
KZ0.01F
C619
500KK
2200AAB
C414
250MJ0.12AU
C424
:250MJ0.12AT
:250MJ0.12AP
630NJ
0.012
EAQ
C470
250MJ0.2AU
:250MJ0.2AT
:250MJ0.2AP
C423
500KK
2700AAB
C416
EM470T
C402
18K
R585
1000KK2200NHA
C404
:1000KK2200CR
25EM
1000T
C505
1500MH
3600NP
C411
PC123YC2
D612
DJ150K
R584
L625
2SA1319R
Q581
:2SA1319S
:2SA1319T
DG39K
R493
1/6NF39K
R464
L628
DJ150K
R581
2.2
R429
DG47K
R494
35EM100T
C613
SE140NL
IC601
1/6NF10K
R422
L641
1/6NF3.3K
R467
DJ680B
R622
1/6NF
3.3K
R423
560
R402
1/6DG12K
R495
P
D617
1/2DJ
1B
R481
K5B
1
ABL
GND
AFC
HGND
H_DRIVE
GND
PCC
HOLD_DOWN
GND
V_RAMP–
12
NORMAL_SW
1/6NF
680
R462
R
D616
1/6NF1K
R468
T401
1
2
3
4
8.2K
R623
FJ1200BE
C616
:FJ1200D
1/2DJ
1B
R480
14V_TV
14V_TV
2SJ470
R424
10K
R624
L810
10K
R646
16PM
22P
C468
1FJ1
R503
:1FJ1VFNW
2SJ1K
R406
400NJ
0.022EAQ
C614
J
R469
1/2FJ
1.5
R504
:1/2FJ
1.5VFNW
D695
DJ100
R416
2FJ1
R461
:2FJ1VFNW
J
R438
K6B
1
2
3
1/6NF
33K
R475
2SC5291S
Q401
K6L
1
2
12K
R412
–15V
2SC3332R
:2SC3332S
Q462
2SJ47
R407
L613
DJ56
R482
Q642
2SJ1.8
R508
FJ470BE
:FJ470D
C615
1.5M
R470
L460
Q460
1/2DJ15
R507
DJ1K
R491
L461
1SJ56
R410
T601
10
11
5
12
6
13
7
14
8
15
9
16
17
18
19
20
21
22
1
2
3
2SJ2.2
R497
K6J
1
140V
NC
GND
4
MAIN+14V
Q402
L462
2SJ8.2
R409
2SJ12K
R635
5.6K
R405
1/2DJ180K
R487
140V
J
R401
DJ5.6K
R488
L421
D624H1
4.7K
R621
1/2DJ68K
R641
C403A
1SJ6.8K
R411
J
J420
1/6NF470
R466
1/6NF
1.8K
R421
D631
1
2
3
4
5
K4C
1
200V
2
HEATER
3
GND
D514
22K
R642
R
D652
J
J418
D502
J
J417
D462
FMC-
G28SL
D461
HZ11B2L
D422
D627H1
D412
D413
R
D460
J
L511
D401
D615
D614
D656
D635
R
D618
D613
R
D467
J
J421
D643
1K
R618
J
R612
R
D468
J
J419
HZ11B2L
D421
DJ2.2K
R619
R
D649
1
2
3
4
5
6
7
8
10
9
2SJ680
R506
D624
14V_TV
14V_TV
1/6NF
5.6K
R513
D482
5VAL
DJ82K
R463
500KK
0.01A
C513
R
D486
1/6DG5.6K
R501
L416
D625
J
J422
1/6NF
5.6K
R509
L417
C608A
R
D402
J
R502
D503
15K
R428
D504
1/6DG5.6K
R512
D513
1000KK
3900CRD
C426
:1000KK
3900CTB
DJ1B
R511
RD20EB3
D428
:MTZJ20C
TP7
2SJ
0.18
R613
K4GND2
K6GND2
K6GND3
EU01Z
D641
EM100
LBWA
C640
100K
R640
D642
K6GND4
YG901C2-LB
D621A
C686A
400MK0.047AZ
C467
:200NJ0.047EAQ
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★
★ ★
★
★
★
★
★
★
★
15
50 Vpp [H]
19
16
30 Vpp [H]
14
1.6 Vpp [H]
17
1.1 Vpp [H]
9
29 Vpp [V]
7
1.5 Vpp [V]
8
1.3 Vpp [V]
18
54 Vpp [V]
LIST OF REPLACEABLE DIODE
7DD00019
7DD00192
7ED00025
7DD00021
R
AA
M
P
1S1555,1S2473,1S2076,DS442,1N4148
1S1555,1S2473,1S2076,DS442,1N4148
1SS176,1SS133,GMA01
1SS176,GMA01,1SS133
1S1553,1S2076A,1S2471,1N4148
14TH CODE
DIODE NAME
LIST OF REPLACEABLE TRANSISTORS
AC
AB
7T200182
7T200181
2SA564A
2SA1015
2SA933S
Q,R
R
O,Y,GR
Y,GR
Q,R
R
14TH CODE
AJ
7T200221
2SA1179
2SA1037
M6,M7
R,S
14TH CODE
(2SA1037K CHIP TYPE)
(2SA933S TYPE)
AE
AD
7QT00202
7T200183
2SC945A
2SC1815
2SC1740S
RA,QA,PA
QA,PA
O,Y,GR
Y,GR
14TH CODE
AH
7T200220
2SC2812
2SC2412K
L6,L7
R,S
14TH CODE
(2SC1740S TYPE)
(2SC2412K CHIP TYPE)
Q,R,S
Q,R,S
P/D
FRONT
★
★
★
★
★
★
★
★
★
★
To Main
Board
(K9FRB)
To Main
Board
(K9FRA)
AC Rectification
AC Cord
AC Switching
Degaussing
Coil
Switching
Standby Power Supply
(5V Regulator)
RC Receiver
Key Switch
Front Board
★
★
RC PRE AMP
2
1
3
4
–
~
~
+
POWER
VOL.+
VOL.–
CH.+
CH.–
RC_IN
KEY_IN
PWR_SW
9V-1
500KK
1000A
C604
15WK1VEC
R601
KZ0.01F
C1620
RL601
1
34
2
PQ050EA1MXP
IC1611
2
3
6A125VT
F601
16EM
2200
LBWA
C1613
1
4
6
8
K1901
1
2
3
4
5
PWR_SW
6
K6F
1
2
2SJ6.8K
R602
10EM
470LBWA
C1615
KZ0.01F
C1614
D1612
K1902
1
AMUTE
8
AGND
D1613
D1614
D1615
16EM
100
LBWA
C688
D1611
R
D687
AB
Q688
KZ0.01F
C1618
R
D683
33K
R1612
DJ120
R686
5.6K
R1611
K6M
1
2
3
6.3EM
470
LBWA
C1903
RL602
1
3
4
2
22K
R687
KZ0.01F
C689
12K
R688
RBV-608
D601
1
2
3
4
L1901
SW1901
1
22
LF601
D1901
SW1905
1
22
SW1903
1
22
1K
R1909
W601
KD1P
J
D1902
3.9K
R1905
SW1904
1
22
KD2P
1K
R1910
1.8K
R1903
J
L1902
U20B40500
A1901
1
2
3
16EM
10
LBWA
C1902
5.6K
R1906
A1
275GM
0.1VDB
C610
1K
R1902
A2
KFRONT
275GM
0.22VDC
C601
SW1902
1
22
DHXAA
EV0068
PS601
F601B
500KK
1000A
C602
F601A
10K
R1901
VEV0043
VA601
1
2
2.2K
R1904
LF602
2SC3068
Q1611
T681
C600
500KK
4700A
KFRONT2
1/2CM3.3MXU
R603
:1/2XJ3.3MV
(A:CA)
:1/2DK3.3MLBWA
★
★
★
★
★
★
L901
DEG. COIL
★
FOR CONTINUED PROTECTION AGAINST
A RISK OF FIRE, REPLACE ONLY WITH
THE SAME TYPE 6A, 125V FUSE.
ATTENTION: POUR MAINTENIR LA PROTECTION
CONTRE LES RISQUES D' INCENDIE UTILISER UN
FUSIBLE DE RECHANGE DE MEME TYPE 6A, 125V.
CAUTION
6A 125V