DIP
VOL +
VOL -
CH +
MENU
VOL +
VOL -
CH +
CH -
2
1
T4AL250V
POWER
VOL +
VOL -
CH +
CH -
MENU
SW601
E
E
1
27
10
20
28
54
30
41
51
DIP
8
5
4
1
E
E
E
E
E
1
2
4
3
E
1
IC801
5
E
E
B
E
B
E
E
E
1AA4B10E3370A
33
R/G
1
5
MTS
1
13
1
10
16
10
71
5
1
7
81
4
A101
KR
KL
T471-H1
T471-H2
T471-H4
T471-H5
T471-H6
T471-H7
T471-H10
K1001
K1003
K1002
T471
PS601A
JP601
RL601
KE-2
KE-1
KE
D641
R620
C3439
C3436
C3404
C3412
C3408
C3413
C3416
C3417
C3418
C3424
C3427
C3401
C3432
F601A
F601B
R602-H1
J029
J030
J031
SW1901
SW1902
SW1905
SW1904
SW1903
KH
R602-H4
R602B
R602-H2
R602
SW601
R601
L601
C601A
C601
C606
C605
C608
D606
D605
D608
SW601-H3
SW601-H4
SW601-H2
SW601-H1
KG-1
KG-2
VA601
KG
D607
D1902
J032
K1921
C610
R449
R103
D485
R488
D467
R423A
C465
JP442
D249
J033
TP101C
C106
TP-A
D103
R104
R481
C423
C423-H1
C423-H2
C423-H3
D438
C420
C420-H1
C420-H2
C
420-H3
C423A
C420B
C424A
C424
D439
C422
C422A
JP436
L432
L431
C425
C425A
KQ
C486
C471
R424
R435
C426
R355
C441
C441A
C442
C442A
R442
L442
T431
R434
C433
Q431
R474
D469
C468
R468
R464
R469
R472
R480
C462
C463
R461
C466
R466
D461
R467
C470
D465
R471
D464
Q462
C467
R473
C464
R465
R462
R485
D486
C449
D448
R475
C469
D468
R445
C424-H1
C425-H1
C424-H3
C424-H2
C425-H2
C425-H3
L441-H1
L442-H2
L442-H1
KDY-1
KDY-3
KDY-4
KDY-5
C442-H2
C441-H2
C441-H3
C442-H3
C442-H1
C441-H1
L441-H2
L461
L461A
D441
L462H2
L462H1
C432
R433
R652
R512
C518
R655
D501
C517
C511
C510
R510
R511
J034
R515
R514
R522
C515
C514
C515A
C524
R524
J035
D353
C231
C205
C204
R352
D352
R354
C233
C225
C358
C232
C201
C202
C210
IC201
D421
J036
J037
C540
C520
R519
R518
C527
C101
R516
R441
C420A
C420A-H2
JW2
C434
J003
R243
C651
D476
L462
R529
R486
R432
C431
C609
X801
IC802
C805
C893
C861
Q612
R643
R642
R641
R624
R623
R622
R619
R616
R614
R613
R611
Q642
Q641
Q625
Q611
D616
C611
R633
D612
C614
D615
D614
R615
D610
L612
D643
D611
L613
R627
D619
R631
D617
L616
VR463
R426
R628
R629
C629
C628
D652
C654
R653
C657
R665
R664
D693
C693
Q693
C658
C107
C135
L171
C132
C247
C245
C244
X211
C246
C209
TPHH
D1012
R105
D1002
D1022
L204
C1015
C1005
C1003
C1025
C1013
D655
C891
C178
J039
IC202
C835
R818
J004
R357
J040
J041
J005
J042
R857
R855
R853
C122
R115
J006
R851
J007
R866
R869
J043
R211
KP
J044
R230
J046
J047
J048
J049
J050
J052
D102
D230
R291
R267
R654
MB
DT
CLK
AGC
IF
11
10
9
8
7
6
5
4
3
2
1
GND
PB
TB
T471-H9
GND
SDA
SCL
STS
ACK
1
4
C613
R621
R625
R626
Q613-H7
Q613-H5
Q613-H6
Q613
C615
L615
R632
L614
R644
C644
C639
C656
L651
Q652
R657
C665
Q654
R669
R656
L653
C655
D651
D654
R661
C617
KDY
J010
J012
T471A
L172
C134
IC1201
Q461A
Q461
Q461-H2
Q461-H1
Q432-H5
Q432-H4
Q432-H7
Q432-H6
Q432-H2
Q432
IC501-H1
IC501-H3
IC501-H4
IC501-H2
IC501
JP510
R527
J014
R441H1
R441H2
R442H1
R442H2
C468A
D466
D469A
J015
J016
R540
J053
J054
J055
J056
IC681
C643
C681
J057
J058
J059
D664
C664
Q651
Q681
D671
J060
J061
J062
R672
J063
J064
R660
C663
D662
J065
D661
R663
R695
L654
J066
D203
D202
D201
J067
J068
J017
Q691
J069
J070
J071
J072
C1023
X161
J074
J076
J018
R228
J077
J078
J079
J080
J019
J081
JP503
JP504
J082
R173
J083
J020
J021
J084
R264
R1004
R1005
R1001
C1001
C1011
C1021
J085
J086
J087
J088
J089
J022
J091
J092
J093
J094
D1011
D1021
J095
J096
R106
J023
J097
J098
JP3401
J099
J100
J101
J024
J025
J103
J104
J105
J106
J107
J108
J109
J110
J111
J026
J112
J113
J114
J115
J116
J117
R658H1
R658H2
R1912
J027
C031
C032
C034
C035
J118
JP002
J150
R031
C042
C041
R006
J119
C005
R005
J121
R003
J122
C004
J125
J126
R029
J127
J128
J129
J130
R019
J028
JP652
J139
J143
J141
T471-H8
R662
L601-H2
L601-H1
L601-H4
L601-H3
C609-H1
C521
J142
J009
R036
D1001
J144
Q432-H3
Q432-H1
JP029
J145
J132
C487
R435H2
R435H1
T431A
R528
C618
D653
R1907
J075
JW1
JW3
JW4
D1901
R423
C652
J051
D512
R831
J090
D861
D646
R830
VR462
J140
R602A
C033
JP030
JP441
JP3402
L441A
C465A
PS601
R602-H3
IC002
IC001
J013
C355
J152
JP003
J008
J155
J151
JP004
JP001
R042
L838
L837
L842
L841
JP501
R602-H5
R602-H6
R602-H7
R602-H8
JP488
JP487
JP486
C486A
JW6
JW7
R650
JP476
R449A
T471-H11
T471-H3
D650
K1002A
C352
D639
R639
R487
R670
JP006
JP005
R041
KX
J154
C3414
JW5
C609-H2
C426A
A1901
L441
J102
J156
JP007
J158
C420A-H1
J161
D519
R658
C1902
C691
VR651
J163
D003
J135
J164
T611A
1
3
1
3
T611B
J165
J167
J166
J168
C3411
C226
TP-B
JP658
C227
AUDIO AMP.
(STEREO)
AUDIO AMP.
(MONO)
(CPU)
(SOLDER SIDE)
IF /VIDEO/CHROMA/DEF.
CONVERTER
TRANS.
(FBT)
H-OUT
C
VERT. DEF.
+B ADJ.
MEMORY
IC3401
(SOLDER SIDE)
TP +B +130V
MAIN BOARD (Component Location)
F5TW
E
E
E
5
1
1
4
3
4
5
5
6
6
7
7
8
8
9
9
10
11
1AA4B10E6900B
Q701
B-OUT
Q721
G-OUT
Q711
R-OUT
Q711-L
Q721-L
Q701-L
K7P
K7Q
K7M
R704
L701
R714
R724
R732
R705
R725
R715
R715-M
R725-M
K7D
K701-M
C700
L700
C731
K701
D754
D742
D741
C741
J703
J702
D753
D752
D751
C751
C710
L705
L700Z
R741
R704A
R714A
R724A
CRT BOARD (Component Location)
Waveforms & Voltages
(On the Main Board)
Q171
B 2.2V
C 0V
E 2.8V
Q261
B 2.4V
C
0V
E 3.1V
Q431
B 0.3V
C 14.7V
E
0V
Q432
B -0.1V
C 123.9V
E
0V
IC001 (AUDIO AMP.)
Pin-1
NC
2
NC
3
1.1V
4
GND
5
0.7V
6
0.7V
7
0.7V
8
NC
9
14.8V
10
NC
Q681
B 0.7V
C 0.1V
E
0V
Q871
B -0.2V
C 4.7V
E
0V
Q886
B 0.7V
C 0.1V
E
0V
Q861
B 4.4V
C 5.0V
E 5.0V
Q881
B -0.4V
C 4.1V
E
0V
(On the CRT Board)
Q701
B 2.5V
C 138.5V
E 2.4V
Q711
B 2.5V
C 140.1V
E 2.3V
Q721
B 2.6V
C 141.9V
E 2.5V
Q741
B 0.7V
C
0V
E 1.4V
IC802 (MEMORY)
Pin-1 GND
2
GND
3
GND
4
GND
5
5.0V
6
5.0V
7
GND
8
5.0V
Q613
G 4.5V
D 0V
S 0.1V
Q818
B
0V
C 1.3V
E
0V
Q654
B 9.7V
C 9.6V
E 9.0V
IC801 (CPU)
Pin-1 4.6V
2
4.6V
3
5.0V
4
5.0V
5
GND
6
2.0V
7
2.7V
8
5.0V
9
3.0V
10
2.5V
11
0.9V
12
0V
13
5.0V
14
3.5V
15
2.8V
16
0V
17
4.7V
18
4.2V
19
0V
20
0V
21
0V
22
0V
23
0V
24
0V
25
0V
26
0V
27
5.0V
28
4.8V
29
0V
30
GND
31
4.8V
32
4.9V
33
NC
34
0.1V
35
5.0V
36
5.0V
IC501 (VERT. OUT)
Pin-1 2.5V
2
26.3V
3
2.8V
4
GND
5
13.6V
6
26.4V
7
2.5V
Q651
B
0V
C 9.7V
E
0V
Q111
B 1.2V
C 4.5V
E 0.5V
Q527
B
0V
C 5.0V
E
0V
IC201 (IF/VIDEO/CHROMA)
Pin-1 2.3V
2
2.2V
3
2.7V
4
1.7V
5
2.9V
6
2.9V
7
GND
8
5.0V
9
2.3V
10
2.5V
11
4.6V
12
4.6V
13
3.3V
14
1.6V
15
1.6V
16
1.6V
17
0V
18
8.3V
19
2.5V
20
2.6V
21
2.5V
22
2.0V
23
2.4V
24
2.5V
25
5.2V
26
2.7V
27
0.9V
28
1.2V
29
1.7V
30
0.9V
31
4.5V
32
8.3V
33
GND
34
GND
35
GND
36
3.3V
37
1.8V
38
2.9V
39
3.5V
40
2.4V
41
GND
42
2.6V
43
5.0V
44
2.8V
45
2.6V
46
2.5V
47
3.8V
48
4.1V
49
4.1V
50
2.5V
51
2.2V
52
1.9V
53
2.4V
54
3.2V
IC202 (REG.)
Pin-1 7.6V
2
GND
3
5.0V
IC681 (REG.)
Pin-1 11.0V
2
GND
3
5.0V
Q751
B 9.2V
C
0V
E 8.9V
5.0Vp-p
Horiz.
5.0Vp-p
Vert.
5.4Vp-p
IC801-pin18
<Horiz. sync>
IC801-pin17
<Vert. sync>
Q701-B
<B drive>
Q711-B
<R drive>
Q721-B
<G drive>
4.3Vp-p
4.5Vp-p
4.5Vp-p
6.5Vp-p
Horiz.
1.7Vp-p
Horiz.
50Vp-p
Horiz.
47Vp-p
Vert.
2.2Vp-p
4.6Vp-p
4.5Vp-p
1.5Vp-p
51.6Vp-p
26.2Vp-p
60.8Vp-p
IC201-pin27
<H drive>
IC201-pin19
<R out>
IC201-pin20
<G out>
IC201-pin21
<B out>
IC201-pin44
<Internal V in>
IC501-pin5
<Vert. out>
Q432-B
<Horiz. out>
Q613-C
<Power out>
420Vp-p
Q431-C
<Horiz. drive>
4.6Vp-p
108Vp-p
116Vp-p
115Vp-p
Q701-C
<B-out>
Q721-C
<G-out>
Q711-C
<R-out>
Vert.
1.0Vp-p
IC201-pin23
<V drive>
1.4Vp-p
Horiz.
IC201-pin40
<Selected V out>
2.5Vp-p
1.4Vp-p
Horiz.
IC201-pin46
<Video out>
2.6Vp-p
1000Vp-p
Horiz.
4.5Vp-p
IC201-pin28
<FBP in>
5.1Vp-p
1000Vp-p
Horiz.
1380Vp-p
Q432-C
<Horiz. out>
