SCHEMATIC DIAGRAM
MODEL : 51HX84/57HX84
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY
PRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL.
CAUTION: The international hazard symbols " " in the schematic diagram and the parts list designate components
which have special characteristics important for safety and should be replaced only with types identical to those in the
original circuit or specified in the parts list. The mounting position of replacements is to be identical with originals.
Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE on the MANUAL for this
model. Do not degrade the safety of the receiver through improper servicing.
NOTE:
1. RESISTOR Resistance is shown in ohm [K = 1.000, M = 1.000.000]. All resistors are 1/6W and 5% tolerance
carbon resistor, unless otherwise noted as the following marks.
1/2R = Metal or Metal oxide of 1/2 watt 1/2S = Carbon compsistion of 1/2 watt
1RF = Fuse resistor of 1 watt 10W = Cement of 10 watt
±
10% G = ±2% F = ±1%
K =
2. CAPACITOR Unless otherwise noted in schematic, all capacitor values less than 1 are expressed in
the values more than 1 in pF.
All capacitors are ceramic 50V, unless otherwise noted as the following marks.
Electolytic capacitor
Mylar capacitor
µ
F, and
3. The parts indicated with "
4. Voltages read with DIGITAL MULTI-METER from point indicated to chassing ground, using a color bar signal with
all controls at normal, line voltage at 220 volts.
5. Waveforms are taken receiving color bar signal with enough sensitivity.
6. Voltage reading shown are nominal values and may vary
" have special characteristics, and should be replaced with identical parts only.
±
20% except H.V.
SCHEMATIC DIAGRAM STRUCTURE:
DEF POWER Circuit
BACK/AV Circuit
CONV/IF/AUDIO (1/3) [ SHEET - 1/3] ............. 5/60
CONVER OUT Circuit
FRONT IN/CONT/REMOVE Circuit
CRT-D Circuit (1/2) [ SHEET - 1/2] ............ 10/60
AV Circuit (1/10) [ SHEET - 1/10] ..........12/60
MICON Circuit (1/10) [ SHEET - 1/10] ..........22/60
G-HYPER Circuit (1/3) [ SHEET - 1/3] ............32/60
AD-CONVERTER Circuit (A) [ SHEET - 1/3] ............35/60
GC-TC90A92A Circuit (1/3) [ SHEET - 1/3] ............38/60
GC-REG Circuit .......................................................................................................... 40/60
GC-TC90A92A Circuit (3/3) [ SHEET - 3/3] ............41/60
GNESIS Circuit (1/3) [ SHEET - 1/3] ............42/60
SDRAM Circuit ........................................................................................................... 45/60
GNESIS OUT Circuit .................................................................................................. 46/60
GNESIS REG Circuit .................................................................................................. 47/60
CPU Circuit ................................................................................................................. 48/60
DIGITAL CONVER Circuit (1/8) [ SHEET - 1/8] ............49/60
CONVER-REG Circuit (1/4) [ SHEET - 1/4] ............57/60
........................................................................................................... 4/60
................................................................................................... 8/60
(1/3) [ SHEET - 1/3] .............
(2/3) [ SHEET - 2/3] .............
(3/3) [ SHEET - 3/3] .............
(2/3) [ SHEET - 2/3] .............
(3/3) [ SHEET - 3/3] .............
............................................................................ 9/60
(2/2) [ SHEET - 2/2] ............
(2/10) [ SHEET - 2/10] ..........13/60
(3/10) [ SHEET - 3/10] ..........14/60
(4/10) [ SHEET - 4/10] ..........15/60
(5/10) [ SHEET - 5/10] ..........16/60
(6/10) [ SHEET - 6/10] ..........17/60
(7/10) [ SHEET - 7/10] ..........18/60
(8/10) [ SHEET - 8/10] ..........19/60
(9/10) [ SHEET - 9/10] ..........20/60
(10/10) [ SHEET - 10/10] ........21/60
(2/10) [ SHEET - 2/10] ..........23/60
(3/10) [ SHEET - 3/10] ..........24/60
(4/10) [ SHEET - 4/10] ..........25/60
(5/10) [ SHEET - 5/10] ..........26/60
(6/10) [ SHEET - 6/10] ..........27/60
(7/10) [ SHEET - 7/10] ..........28/60
(8/10) [ SHEET - 8/10] ..........29/60
(9/10) [ SHEET - 9/10] ..........30/60
(10/10) [ SHEET - 10/10] ....... 31/60
(2/3) [ SHEET - 2/3] ............33/60
(3/3) [ SHEET - 3/3] ............34/60
(B) [ SHEET - 2/3] ............36/60
(C) [ SHEET - 3/3] ............37/60
(2/3) [ SHEET - 2/3] ............39/60
(2/3) [ SHEET - 2/3] ............43/60
(3/3) [ SHEET - 3/3] ............44/60
(2/8) [ SHEET - 2/8] ............50/60
(3/8) [ SHEET - 3/8] ............51/60
(4/8) [ SHEET - 4/8] ............52/60
(5/8) [ SHEET - 5/8] ............53/60
(6/8) [ SHEET - 6/8] ............54/60
(7/8) [ SHEET - 7/8] ............55/60
(8/8) [ SHEET - 8/8] ............56/60
(2/4) [ SHEET - 2/4] ............58/60
(3/4) [ SHEET - 3/4] ............59/60
(4/4) [ SHEET - 4/4] ............60/60
1/60
2/60
3/60
6/60
7/60
11/60
GR30
OPEN
VP_Q510
H_PHA_COM
V_BLK
V_STOP_BLK
V_DF1
ABL
ABL_SW
CONV_ABL
9V1
AFC
X-RAY
D450
1N4004A
120V
Q4430
2SC2236-Y
D4430
1N4004A
C4430
16V10
10.2 14.1
10.9
+
D4431
MA8110-L
R4431
HVCC
H_OUT
1
H_CONV
51HX84/57HX84
DEF POWER (2/3)
SHEET-2/3
R4430
1/2R15
1/6P1k
H_PHA_COM
Q798
OPEN
R7932
OPEN
R363
10k
B25V0.047
R369
1/6P10k
R368
OPEN
Q306
TA75902P(J)
R343
1k
+
16V47
C340
1/6P4.7k
KTC4075Y
D491
1SS355-TE17
R415
1k
R7930
0.6
R7931
SHORT
KTC4075Y
C362
R361
100k
R360
5.6k
R350
R249
R246
C221
63V0.10
Q409
R499
1k
Q410
12k
1357642
R341
18k
R362
1/6P470k
M
MA8100-M
R498
10k
C450
25V1000
KTC4075Y
47k
C491
16V10
6.8k
R365
C361
0.1uF
16.1 1.4
C309
B1000p
R349
3.9k
Q241
2SC2482
R245
1/6P4.7k
D492
+
+
Q406
Q405
KTA2014Y
2
R440
10k
R439
+
25V100
12k
R314
47k
R312
C311
B25V0.01
7.2
8914 101213 11
9.12.2
D303
MA8075-H
MTZJ15C
R244
Q408
KTA2014Y
33k
R495
D490
MA8062-M
R414
1/4RF27
100V22u
C419 R438
330p
D419
1SS35510k
KTC4075Y
C310
D301
R315
680
R248
OPEN
C497
16V100
C416
1/6P100
1k
Q411
1/6P120k
10k
NP
R416
2R150
+
R413
R496
1k
D401
AG01
R492
R493
390
T401
TLN1080AH
2
1
Q402
2SK2962
D411
MA8180-M
R417
1/6P2.2k
1k
R313
R494
1P
L490
R418
10k
R419
10k
R477
470
R497
X
43
6
500V3300p
33
330
10
TE481TE482
C401
R403
1R100
C490
16V47
R436
1/6P47k
D418
MTZJ33C
R437
22k
HV_DET_OUT
1/6P27k_G
1P
R
Q404
2SC5859
Q404A
C402
500V390p
R490
1/2R330
R243
+
R406
1R6.8k
R404
1.8k
+
C318
OPEN
EW_DRIVE
C330
16V10
R348
47k
R242
1/6P18kG
R240
1/6P15kG
FR105-FL
C440
1800VH1000p
L403
TEM2011AA
Q428
KTC4075Y
L310
100u
+
R241
1/6P 18kG
D402
5
FMQ-3GU
D461
R448
1/6P5.6k
R469
100
MA8180-M
C515
63V0.10
C467
M
C432
50V0.033u
R471
1/6P220k
D426
R342
OPEN
R347
OPEN
0.1uF
R345
Q341
SHORT
OPEN
C327
R338
15k
R513
1/6P100
R515
1/6P10k
M
D505
1SS133
L401
56u
R405
1/6P100
D404
ERC06-15L
C468
PP_630V5.6n_J
PP_630V6.8n_J
R446
R449
R409
3R22
TEM2014
G
GR31
D308
OPEN
R466
43k
M
C405
63V0.10
C444
1800VH3600p
C464
10k
L406
TLN3351AD
1/6P1.5k
R410
3R22
500V220p
L408
Q425
SD
FET 2SK2920
0
D309
OPEN
D327
RD11ESAB1
C483
47p
R483
SHORT
R447
1R47k
C443
1800VH4700p
6
4
250V3.3u
C449
D425
R364
330
D365
MA8075-H
GR32
0
R322
100
R475
1/6P100
R484
R467
220
C463
B6800p
R420
1/6P10k
D420
1SS133
L402
TLN3534AH
EU2A
R325
4.7k
R321
4.7k
R331
1/4R10KF
C316
OPEN
R330
1/4R10KF
R422
22k
R407
1/2R10
1
2
3
3
L407
TEM2014
+
C460
200V22u
OPEN
R480
R367
3.9k
47k
+
D333
RD11ESAB1
250V33
4
R366
1/6P2.2k
C302
50V1.0
C315
10V1000
RD11ESAB1
Q420
2SC2482
D421
FR105-FL
R421
1/6P22k
C446
R444
1R0.39
M
63V0.047
+
D334
C481
0.33
10k
R482
25V8200P
C314
C482
B3300p
+
TLN2222AH
Q302
4.9
VRef
+
CENT DAC
3.6
EHT
VDrive
42378691112 10 5 1
VDCRef
C312
V NF
8.8
Vcc
R491
2.2k
EW PWM
ANA GND
EW fb
EW Filter
FBP in
R481
1/6P10k
+
160V33u
L441
R441
RSF14A3D330
W1
Length
W2
Length
Sampling
50V/div
10us/div
10us/div
Nor
10Msps
205
C448
100
3.0
1V/div
mal
TA1317AN
V RAMP
BLK OUT
CENT OUT
V DF OUT
H DF OUT
DIG GND
B301
R412
2R15k
VCH1
VCH2
1k
1k
Trigger
AGC
T.C
V in
LVP
SCL
SDA
D406
FR105-FL
Trigger
Type
:Simple
Mode
Point
:500
C301
63V1.0
M
C303
63V1.0
2313 17 1815 16 21 2219 2014 24
50V0.022u
C308
MM
R306
8.2k
D378
1/6P100
R302
OPEN
R379
OPEN
R311
1/6P56k
R340
1/6P10k
R307
100
R308
100
D337
MA8056-M
D336
MA8056-M
V_STOP_BLK
R910Z
R910
1R0.56
OPEN
GJ406
R443
1/2R1
D415
FR105-FL
C417
250V1.5u
C425
400V0.27u
C423
400V0.30u
D414
FR105-FL
200V0.12u
MEM2
CH1/2
MEM1
DEF/CONVER
(DEF)
4 5
50V/div
10us/div
GND
Record
Source
:CH1
Length
LeLevelel:A:Auto
:-22%
:Rise
Edge
CH1/2:1k
C412
C412Z
CH1
CH2
W1
Length
W2
Length
Sampling
16.2
1R1.0
R305
R370
1/6P1k
R346
1R390
R344
1R150
Q301
LA7833S
L305
TEM2014
L302
TLN3299D
R380
OPEN
1N4004A-FL
R381
OPEN
D306
V_OUT
L303
TLN3299D
8
-16V2
16V2
16V1
-16V1
D371
OPEN
R390
R392 R391
SCL1
SDA1
V_OUT
1R560
V_OUT1
V_OUT2
1R560 1R560
V_NF
D370
1SS355-TE17
KTA2014Y
Q305
50V100
C321
50V100
R378
10k
Q372
KTC4075Y
R336
C323
1k
0.047
Q301A
R334
R335
1k
1k
C324
+
M
63V1.0
+
D302
7
Q371
KTA2014Y
R375
15k
R376
33k
R337
1/2W 1R2J
D304
SC570ALFE2
FR105-FL
TP-V
1P
TP-G
0.1uF
C371
C328C320
100V2200p
M
P1N
1P
P1N
R374
100k
R373
82k
Q370
2467531
-16.3
C325
0.22
L304
TEM2011AA
KTC4075Y
M
100V0.047u
+
R372
C332
C333
R355
1/6P10k
C338
16V10u
R371
82k
3.3k
C370
C331
OPEN
+
2.2u
C334
B470p
D305
1N4004A-FL
50V100
+
M
HV_DET
R247
1/6P1k
TFB3094AD
T461
10
9
4
7
6
5
119
2
3
R411
2R2.2
400
V
200V/div
3.0
V
1V/div
10us/div
1k
10us/div
1k
Nor
mal
10Msps
Trigger
D7
D6
D5
D4
D3
D2
D1
T400
TLN2220AH
1/2S1k
2kV1500p
R427
100
Trigger
CH1/2
:Simple
Type
Mode
uto
:500
Point
R423
C415
B1000p
Source
vel
Edge
MEM1
:CH1
:-10%
:Rise
C422
HV
DF_V
Z401
Eo
P499
81
1P
C445
200V47n
R442
L442
OPEN
OPEN
GJ42
GJ43
R425
1/2P100K
R434
R424
R428
1P220k
R435
1/6P3.3k
MEM2
DEF/CONVER
CH1
200V/div
(DEF)
W1
Length
W2
200V/div
Length
Sampling
10us/div
GND
Length
Record
CH1/2:1k
1/2P270K1/2P100K
1/2P270K
Q400
2SC4686A
M
400
V
VCH2
3.0
1V/div
5ms/div
1k
5ms/div
1k
Nor
mal
20ksps
Trigger
R433
R426
1/6P100
C420
63V0.10
Trigger
Type
Mode
Point
R432
D412
PR-1H1/2P270K
C426
2kV2200p
6
MEM1
CH1/2
MEM2
:Simple
Source
Length
Record
:CH1
:A:Auto
LeLevel
CH1/2:1k
:-10%
:500
Edge
:Rise
SG99B3EN
0.6
0.6
R431
2R1k
D413
PR-1H
DEF/CONVER
6
200V/div
5ms/div
GND
(DEF)
Trigger
V
CH1
10.0
5V/div
CH2
V
3.0
1V/div
W1
10us/div
Length
1k
W2
10us/div
Length
1k
Sampling
Nor
mal
10Msps
Trigger
Type
Mode
Point
Trigger MEM1CH1/2 MEM2 MEM1Trigger CH1/2 MEM2
CH1
20 V
10V/div
CH2
3.0 V
1V/div
5ms/div
W1
Length
1k
5ms/div
W2
Length
1k
Sampling
Normal
20ksps
Type
Mode
Point
R429
1/2S1k
GND
H_DY
H_RET
3.0
V
CH1
2V/div
CH2
V
3.0
1V/div
W1
10us/div
Length
1k
W2
10us/div
1k
Length
Sampling
Nor
mal
10Msps
Mar
ker
1
0.0us
T
V
V
3.04
Mar
ker
2
0.0us
MEM1
CH1/2
MEM2
:Simple
:CH1
Source
Record
:A:Auto
CH1/2:1k
:-22%
LeLevel
:500
:Rise
Edge
:SimpleTrigger
Source :CH1
Record
:Auto
:-34%
Level
CH1/2:1k
:500
:Rise
Edge
T
3.04
V
V
T
0.0us
V
V
0.00
DEF/CONVER
CH1
V15.0
5V/div
(DEF)
CH2
V
3.0
1V/div
W1
2
GND
Length
DEF/CONVER
GND
Length
5ms/div
1k
Length
W2
5ms/div
5V/div
Length
1k
Sampling
10us/div
Nor
mal
20ksps
-8.0 VCH1
2V/div
(Vertical)
CH2
V
3.0
1V/div
W1
5ms/div
7
Length
1k
W2
5ms/div
10V/div
Length
1k
Sampling
5ms/div
Normal
20ksps
220V
HEATER
Trigger
MEM1
CH1/2
MEM2
DEF/CONVER
(DEF)
1
H_DRIVE
1V/div
10us/div
:Simple
Trigger
Type
:A:Auto
Mode
:500
Point
Trigger
:Simple
Trigger
Type
:A:Auto
Mode
:500
Point
:Simple
Type
:Auto
Mode
:500
Point
GND
Length
:CH1
Source
Record
CH1/2:1k
:-34%
LeLevel
:Rise
Edge
MEM1
CH1/2
MEM2
DEF/CONVER
(DEF)
3
5V/div
5ms/div
GND
Length
:CH1
Source
Record
CH1/2:1k
:64%
LeLevel
:Rise
Edge
DEF/CONVER
(Vertical)
GND
8
2V/div
5ms/div
Length
Record
:CH1Trigger
Source
CH1/2:1k
-68%
Level
:Rise
Edge
(2/60)
4-C8
4-C8
3-E6
3-E6
1-B3
3-D3
GND
L_APRO
GND_A
R_APRO
A_MUTE
L_VARI
GND_A
R_VARI
5V2
L-VARI
R676
100k
KTC2875B\\2SC3326B
R-VARI
R677
100k
Q661
KTC2875B\\2SC3326B
R665
22K
Q662
R667
22K
Q664
RN2404
AN7580
C661
R661
50V4.7
1k
++
C666
R671
50V4.7
1k
R675
OPEN
+
Q663
BA4558
R674
4.7k
C667
16V10
50V0.01
R662 R663
33k 8.2k
6.3 6.3 6.2 0
1
12.7
8
C665
12V
243
-
+
+
765
6.3 6.3 6.2
R672
33k
C662
50V10
L_APRO
R666
47k
-
REF
R668
47k
C663
R673
50V10
8.2k
R_APRO
++
R697
1R220
R698
+
10k
C683
R699
10k
25V100
D628
+
C684
25V47
MA8120-M\\MA8120-H\\MA8120-L
1SS355-TE17\\MA111
D613
1SS355-TE17\\MA111
D614
1SS355-TE17\\MA111
MUTE_E
C604
R602
50V4.7
C603
50V4.7
R604
8.2k
1K
R601
R603
8.2k
1K
++
R681
D615
1SS355-TE17\\MA111
D611
R693
CHIP-JP
MUTE_A
C602
B680p
C601
B680p
R682
2.2k
47K
Q612
KTA2014Y\\2SA1586-Y\\2SA1576AT106
R687
10k
16V220
C612
+
R684
22K
R683
C682
50V2.2
+
22K
1SS355-TE17\\MA111
R688
220k
KTC2875B\\2SC3326B
Q682
Q681
KTC2875B\\2SC3326B
D612
R612
2.2k
1SS355-TE17\\MA111
D616
Q601
Standby
OUT-1(-)
GND-1
OUT-1(+)
Vcc
24 7610912118531
16.2 7.8 0 7.7 5.2 0 0 0 0 7.7 0 7.8
C681
B50V0.01
C605
50V4.7
C606
50V4.7
++
+
C607
25V100
KTC4075Y\\2SC4116Y\\2SC4081
Q614
R611
RN1406
10k
R613
22k
5V2
D617
1SS355-TE17\\MA111
1SS355-TE17\\MA111
D609
R610
27k
R609
56k
IN-1
R626 R627
22k
Q613
Pre GND
22k
C608
50V10
R615
100k
IN-2
+
R616R614
8.2k10k
OUT-2(-)
MUTE
5V=MUTE-ON
OUT-2(+)
GND-2
D601
1SS355-TE17\\MA111
Q601C
1
GREASE
Q601B
1
SCREW
Q601A
HEAT SINK (NEW)
D603
D602
1SS355-TE17\\MA111
1SS355-TE17\\MA111
D604
1SS355-TE17\\MA111
C680
35V2200
D605
1SS355-TE17\\MA111
+
D607
D606
1SS355-TE17\\MA111
1SS355-TE17\\MA111
CHIP-JPGR601
GR602 OPEN
GR602
CHIP-JP
GR601
CHIP-JP
R_SPK
L_SPK
D608
1SS355-TE17\\MA111
H94H84
OPEN
CHIP-JP
10V
11V_A
SP_MUTE
MUTE_A
MUTE_E
P106
R_SPK(-)
1
R_SPK(+)
PLUG 4P
2
3
4
L_SPK(-)
L_SPK(+)
to SPEAKER
4-C2
GND_A
A_VCC
18V
51HX84/57HX84
CONV/IF/AUDIO (2/3)
SHEET-2/3
(6/60)
BLK GND
WHT SELECT
P105
SELECT Digital
SELECT Analog
GND
3
4
12
YEL +9V
+9V
4-C2
TUNER32V
1-C4
PV35P514
1P1P
SCL1
SDA1
5V2
9V1
GND
GND
ENG36A18GF
HY01
VIDEO OUT
NC
32V
SIF OUT
SCL
4.8 4.8
A
A
2.2
LY102
LY103
SCL1
32VNC1F
C105
1000p
1.0V(p-p)(H)
SDA
SDA1
AFT
2.2
D101
MTZJ33C
MPX OUT
32.0
CY105
1000p
QY160
CY160
0.039
MVUS51A
H002
GND
NC
IF IN
9.00 2~4 5.0 04.6 4.65.0 0
C107
16V220
GR02
OPEN
KTC4075Y-RTK
RY160
470
+9V
VIDEO OUT
SW1
RESET
SW2
+5V
RF AGC
C109
25V0.1
C108
10V220
L103
TP12
GR103
SHORT
GJ101
V_TV
TVGND
V_TV
L105
OPEN
TVGND
SHORT
SHORT
GJ102
RESET_IMA
TRF4470AT
1P
AFT1
+5V
AFT1
L104
R_TV
GJ103
OPEN
SHORT
GJ107
SHORT
TV-R
OPEN
GJ170
R_TV
GJ108
ADR SEL(IF)
GJ104
L_TV
SHORT
GND
GR175
OPEN
TV-L
OPEN
L_TV
GJ105
LY105
OPEN
ADR SEL(S)
SHORT
OPEN
GJ106
GND
R IN
R_AV
V_TV2
TV2G
PIP IN
10k
27k
L IN
L_AV
Q172
KTC4075Y-RTK
R173
AFT2
R174
GND
SCL
SCL1
GND
V_TV2
TV2G
A_TV2
AFT2
PIP OUT
L-OUT
R-OUT
W OUT
SDA
SDA1
GND_A
L_APRO
GND
9.0
GND_A
R_APRO
+9V
272625242322212019181716151413121110987654321
C110
+
16V100u
NC
5.0
+
CY102
10V220
SCL1
SDA1
5V2
9V1
R152
10k
Q151
KTA2014Y
GJ150
SHORT
R155
10k
Q154
KTA2014Y
GJ151
OPEN
DY102
OPEN
LY101
TLN3278GH
ELA52LX5
H001
AGC
Vt
1 3 5 7 10 1198642
2~4
5.0 4.8 4.8 32.05.0
C101
+++ ++
50V3.3
150
G101
R151
5.6k
Q152
KTC4075Y-RTK
R154
5.6k
Q153
SDANCADR
SCL
C102
10V220
G102
150
SCL1
SDA1
R150
3.3k
KTC4075Y-RTK
R153
1/6P100
C103
OPEN
VT
87 10 119 15 1716141312654321
2~4
5V
NC
D102
OPEN
C106
50V4.7
L101
68u
IF OUT
RF AGC
NC(SW2)
NC(SW1)
NC5VNC
51HX84/57HX84
CONV/IF/AUDIO (3/3)
SHEET-3/3
(7/60)