Sony KP-HW512K90 Service Manual ▷ View online
– 33 –
KP-HW512K90
RM-Y909K
5-2. HV HOLD DOWN CIRCUIT OPERATION
CHECK AND ADJUSTMENT
When replacing the following components marked with
on
the schematic diagram always check hold-down voltage and if
necessary re-adjust.
necessary re-adjust.
: VR8002
: C8054, C8086, C8088, C8100, C8104,
: C8054, C8086, C8088, C8100, C8104,
C8118, C8123, C8124
D8019, D8020, D8022, D8028, D8036
FB8001
IC8008
Q8035, Q8038
R8035, R8043, R8159, R8166, R8171,
R8196, R8201
T8004 (LOT), T8005 (FBT)
HV block, D board
D8019, D8020, D8022, D8028, D8036
FB8001
IC8008
Q8035, Q8038
R8035, R8043, R8159, R8166, R8171,
R8196, R8201
T8004 (LOT), T8005 (FBT)
HV block, D board
OPERATION CHECK
1. Receive the dot signal.
2. Set PIC MIN/BRT MIN.
3. Confirm that the voltage between cathode of D8038(JW171)
2. Set PIC MIN/BRT MIN.
3. Confirm that the voltage between cathode of D8038(JW171)
and GND is more than 23.0V DC.
4. Using an external DC Power supply, apply the voltage shown
below between cathode of D8038(JW171) on “D” and GND,
then confirm that the HV-Prot circuit works.(Raster disap-
pears.)
Apply DC voltage: Less than 29.05V DC.
then confirm that the HV-Prot circuit works.(Raster disap-
pears.)
Apply DC voltage: Less than 29.05V DC.
HV HOLD-DOWN ADJUSTMENT
1. Connect a HV static voltmeter to the unconnected plug of the high-
voltage block.
2. Power on the set.
3. Connet an externel 10k
Ω VR at CN8015 and adjust this VR so that
the high voltoge is 34.50kV.
4. Adjust VR8002 to the point that the HV-Prot circuit works (Raster
disappears) at 34.50
± 0.50kV reading on the static voltmeter.
5. After adjustment, put the VR cover on VR8002 and apply sufficient
amount of epoxy resin around VR8002 as the same manner for
VR8001.
[ G BOARD]
5-3. +B MAX VOLTAGE CONFIRMATION
The following adjustments should always be performed
when replacing IC501, R5032.
1. Supply 130VAC to variable autotransformer.
2. Receive dot signal pattern and set the PICTURE and
when replacing IC501, R5032.
1. Supply 130VAC to variable autotransformer.
2. Receive dot signal pattern and set the PICTURE and
BRIGHTNESS settings to their minimum.
3. Confirm the voltage of TP +B 135V is less than 137.0Vdc.
4. If step 4 not satisfied , replace IC501 and repeat above steps.
4. If step 4 not satisfied , replace IC501 and repeat above steps.
5-4. +B OVP CONFIRMATION
1. Add to low voltage power supply between to TP. 5001 and
ground.
2. Supply 120VAC to variable autotransformer.
3. Power on the Set and receive dot signal pattern.
4. Set the PICTURE and BRIGHTNESS settings.
5. Check the OVP is activated.
3. Power on the Set and receive dot signal pattern.
4. Set the PICTURE and BRIGHTNESS settings.
5. Check the OVP is activated.
Operate :less than 2.50V
SECTION 5
SAFETY RELATED ADJUSTMENTS
[ D BOARD]
5-1. HV REGULATION CIRCUIT CHECK AND
ADJUSTMENT
When replacing the f
ollowing components marked with
on the
schematic diagram always check HV regulation, and if neces-
sary re-adjust.
sary re-adjust.
: VR8001
: C8079, C8083, C8090, C8129, D8013, D8015
: C8079, C8083, C8090, C8129, D8013, D8015
D8038, D8043
IC8006
Q8021, R8055, R8099, R8102, R8128, R8129,
R8131, R8139, R8140, R8142, R8153, R8163,
R8223, R8230
T8004 (LOT), T8005 (FBT)
HV block, D board
IC8006
Q8021, R8055, R8099, R8102, R8128, R8129,
R8131, R8139, R8140, R8142, R8153, R8163,
R8223, R8230
T8004 (LOT), T8005 (FBT)
HV block, D board
OPERATION CHECK
1. Receive the all white signal.
2. Set PIC MAX/BRT CENT.
3. Confirm that the voltage between CN8015 1 PIN and GND
2. Set PIC MAX/BRT CENT.
3. Confirm that the voltage between CN8015 1 PIN and GND
is less than 7.80VDC.
HV REGULATION ADJUSTMENT
1. Connect a HV static voltmeter to the unconnected plug of the high-
voltage block.
2. Power on the set.
3. Repeat steps 1 and 2 as above.
4. Confirm that the static voltmeter reading is 31.0
± 0.4V.
5. If not, adjust with VR8001 to the specified value.
6. After adjustment, put the VR cover on VR8001 as shown below and
apply sufficient amount of epoxy resin around VR8001.
Fig. 4-1
Remove the cap off from
the unused terminal and
connect a static voltmeter
there.
the unused terminal and
connect a static voltmeter
there.
VR8001
epoxy resin
Fig. 4-2
– 34 –
KP-HW512K90
RM-Y909K
6-1.BLOCK DIAGRAM (1)
63
62
64
8
9
11
17
19
15
16
18
24
26
28
22
23
25
60
59
61
44
41
47
53
43
52
38
40
54
45
4
5
6
10
11
18
19
23
24
25
3
5
7
7
1
2
4
32
31
BUFFER
Q8, 27
BUFFER
Q2008
BUFFER
Q2009
AMP
Q2015
AMP
Q2013
AMP
Q2016
B. P. F.
Q2022, FL2001
B. P. F.
Q2017, 2020, 2025,
2027, FL2002
B. P. F.
Q2017, 2020, 2025,
2027, FL2002
H. SEP
Q21
BUFFER
Q2, 14
H. SEP
Q7
AGC
Q22
C1
A1
A3
C3
C4
C1
A1
A3
C3
C4
1
SW2
ANT SW M
MAIN TU V
MAIN TU L
MAIN TU R
SUB TU V
SUB TU L/R
MAIN TU V
MAIN TU L
MAIN TU R
SUB TU V
SUB TU L/R
RF MAIN-V
Y-IN 1
C-IN 1
V-IN 1
L-IN 1
R-IN 1
Y-IN 3
C-IN 3
SSW-IN 3
V-IN 3
L-IN 3
R-IN 3
DEC-V
DEC-L
DEC-R
RF MAIN-L
RF MAIN-R
S-V
SUB-L
SUB-R
IC2004
A/V SWITCH
IC2003
CN6
CN2001(1/2)
CN701
TU2
MAIN TUNER
TU1
SUB TUNER
MAIN Y/V OUT
MAIN C OUT
SUB Y IN
SUB C IN
SUB Y OUT
SUB C OUT
SUB V OUT
MAIN L OUT
SUB L OUT
MONITOR L OUT
MONITOR R OUT
SUB R OUT
MAIN R OUT
Y-IN 2
C-IN 2
SSW-IN 2
V-IN 2
L-IN 2
R-IN 2
SDA
SCL
DAT1
CLK1
+12V
DET OUT2
DET OUT
DET OUT
DE-EM OUT
AFT OUT
MUTE
RF AGC
SDA
SCL
SDA
SCL
STUH
AFT2
SDA
SCL
SDA
SCL
MODE
F MONO
MUTE
AFT OUT
ST LED
BIL LED
L OUT
R OUT
A26
A29
C29
A20
LINE MUTE
COMP V OUT
MN C OUT
SUB Y OUT
Q2007
Q2029
Q2005
J2001
Q2006
CN9302
CN2002
5
6
7
2
3
1
J2004
BUFFER
Q2012, 2026
VIDEO 1
IN
S VIDEO
VIDEO
AUDIO
L
R
J2005
VIDEO 3
IN
S VIDEO
VIDEO
AUDIO
AUDIO
VIDEO 5
IN
L
Y
PB
PR
R
L
R
VIDEO
AUDIO
L
R
TO
A
BOARD
SYSTEM
CONTROL
BLOCK
ANT
SW
MTU H
AFT1
ST-1
BIL-1
MOD-1
AGC
MONO-1
TU MUTE
STU H
AFT2
MTU H
AFT1
ST-1
BIL-1
AGC
MOD-1
MONO-1
TU MUTE
ANT SW M
SWITCH
Q712
6
8
5
10
3
1
V2-Y IN
V2-C IN
V2-SSW IN
V2-V IN
V2-L IN
V2-R IN
V2-Y IN
V2-C IN
V2-SSW IN
V2-V IN
V2-L IN
V2-R IN
CN2001
(2/2)
6
8
5
10
3
1
VIDEO
MONITOR
OUT
AUDIO
L
R
J2007
AUDIO OUT
(VAR/FIX)
L
R
J2006
AUDIO
VIDEO 6
IN
Y
PB
PR
R
L
A
(1/5)(TUNER)
U
(VIDEO/AUDIO IN/OUT)
H3
(LINE IN 2)
A
TO A BOARD
CN6
VIDEO 4
IN
1
32
7
4
25
49
51
56
58
MULTI-V IN 10
IC2007
COMB FILTER
L1
L2
L3
L5
L6
R6
R5
R3
R2
R1
12
L OUT 1
72
17
42
43
22
23
L OUT
R OUT
21
15
FIL 1 OUT
19
SPACE OUT
17
CENTER OUT
FIL 2 OUT
12
11
LCH OUT
3
MODE1
2
MODE2
RCH OUT
20
14
18
16
28
27
27
S-SDA
19
20
S-SCL
L IN
SCLK
16 SDAT
13
73
R OUT 1
R IN
LCH IN
RCH IN
FIL 1 IN
SPACE IN
CENTER IN
26 CE IN
FIL 2 IN
13 FIL 2 IN 2
CLK2 CLK1
V IN
V OUT
+10V
CONTROL
FILTER
FILTER
MONITOR V OUT
IC2301
PROLOGIC DECODE
4
5
1
IC2302
+10V REG
IC2305
TRUSURROUND PROCESSOR
IC2001
AUDIO SELECT
C20 SUB C OUT
A31 PS-V
C31 FSC
A24 CONT-S IN
C23 CONT-S OUT
C10 AUDIO L
C25 DAT1
C27 CLK1
A11 AUDIO R
A22 S-MODE 1
C22 S-MODE 2
A6
VARI L
C6
VARI R
A28 A MUTE
A15 D1-Y
C16 D1-CB
A17 D1-CR
A17 D1-CR
C12 D2-Y
A13 D2-CB
A13 D2-CB
C14 D2-CR
J9301
VIDEO 2
IN
S VIDEO
VIDEO
AUDIO
L
R
J2002
J2003
X2301
4MHZ
CONTROL S
IN
OUT
DAT1
CLK1
10
SECTION 6
DIAGRAMS
– 35 –
KP-HW512K90
RM-Y909K
BLOCK DIAGRAM (2)
23
25
92
93
83
63
85
58
4
55
42
52
40
81
80
80
51
82
34
21
53
97
95
41
88
31
28
24
65
66
79
30
12
13
15
33
94
46
48
49
45
44
72
SUB H-IN
MAIN H-IN
SUB AFT
MAIN AFT
FMONO
MAIN BIL
MAIN ST
MAAIN MOD2
AGC
ANT SW M
MID BUSY
X SW
VM LEVEL
SD/GR-RST
S-ATT
BUFEER
Q701
DAT1
/BINT
YUVMT
IC704
SYSTEM CONTROL
IC703
NVM
IC701
RESET
28
5
17
18
IN1
IN2
SCL
SDA
IC711
D/A CONVERTER
DAT1
CLK1
AUDIO PROT
SP MUTE
21
12
L OUT1
R OUT2
7
11
5
IN(L)
IN(R)
MUTE
IC708
L,R AMP
4
8
2
10
OUT(L)
IN-(L)
OUT(R)
IN-(R)
AUDIO MUTE
LINE MUTE
8
5
$A0
DAT
XTAL
XTAL
4 RST
YM
OVP
OCP
MAIN RLY
C10
A11
AUDIO L
AUDIO R
CN6 (1/3)
CN6 (2/3)
TO A
BOARD
I/O CONV
BLOCK
STUH
MTUH
AFT2
AFT1
MONO-1
SAP LED
ST -1
MOD-1
AGC
ANT SW M
MID BUSY
X SW
VM LEVEL
S-MODE1
S-MODE2
3D-RST
S-ATT
DAT1
CLK1
/BINT
CONTROL
SWITCHES
S9201-9212
TIMER
X701
+11V
L/R MUTE
Q717,718
PROTECT
Q722,723,725
OFF MUTE
Q402
ON MUTE
Q401
1
2
3
4
CN705
LINE MUTE
A MUTE
C6 VARIL
A6 VARIR
CN6 (3/3)
8
7
4
OVP
OCP
RELAY
CN7
2
OUT
SIRCS
CN9102
3
4
2
1
3
2
1
KEY1
POWER
STEREO LED
KEY1
STEREO LED
STBY-TIMER LED
CN9
CN9202
IC707(1/2)
3
2
1
IC707(2/2)
5
6
7
STBY +5V
D9101
REMOTE SENSOR
A
(2/5)(AUDIO, SYSTEM CONTROL)
H2
(CONTROL SWITCHES)
H1
POWER SWITCH,
REMOTE SENSOR
REMOTE SENSOR
(1/2)
A
TO U
BOARD
CN2001
A
TO U
BOARD
CN2001
G
TO G
BOARD
CN5001
A
TO U
BOARD
CN2001
TU MUTE
54 PROT MUT
PROT MUTE
78 YUV SW
YUV SW
74 BLOCK S
BLOCK S
73 BLOCK M
BLOCK M
39 #V-COMP
V COMP
29
47
CKK0
WP
6
7
CLK
WP
8
5
VCC
DAT
6
7
CLK
WP
IC702
NVM
50
67
POWER MUTE
DAT0
RESET
NVM RST
DAT1
CLK1
A28
A26
SIRCS
CN16
IC9101
2
1
STEREO-LED
STBY-TIMER-LED
CN9101
2
1
STEREO-LED
STBY-TIMER-LED
CN9201
D9102
STANDBY/STEREO
CLK1
9
HV PROT
HV PRPT
TO A
BOARD
VIDEO
BLOCK
5
90
7
SIG-H
SIG-V
SIG-V
MID BINT
SIRCS
OSD H
OSD V
ND-B-INT
IR IN
7
TO A
BOARD
VIDEO
BLOCK
CONT-S
I/F
Q702-706
Q708-710
CONT-S OUT
CONT-S IN
D708
D709
87 /BINT
C23
A24
2
19
YS
OSD R
OSD G
OSD B
KEY1
MPWR
MPWRN
STEREO-LED
STBY TIMER LED
22
OSD-YS
OSD-R
OSD-B
OSD-G
32
1
TO A
BOARD
VIDEO
BLOCK
STBY-TIMER-LED
Q715
Q733
L.E.
SP(R)
R.E.
SP(L)
P MUTE
11
TO A
BOARD
VIDEO
BLOCK
TO A
BOARD
VIDEO
BLOCK
6
TO A
BOARD
TUNER
BLOCK
BLOCK
10
TO A
BOARD
VIDEO
BLOCK
8
Q707
D704
D713
D711
D712
Q707
( )
– 36 –
KP-HW512K90
RM-Y909K
BLOCK DIAGRAM (3)
88
11 12 10
13 27 28
28-13
9-2,99
16-19,22-26
2-5,7-10
31-34,36-39
BUFFER
Q5
76
57
60
59
BUFFER
Q3,4,6
B.P.F
FL7,Q2016
96
46
84
8
22
23
24
25
BUFFER
Q302,303
33
BUFFER
Q323
46
8
BUFFER
Q311,312
48
44
41
3
4
4
1
2
BUFFER
Q308,310
35
BUFFER
Q321
38
BUFFER
Q317
34
BUFFER
Q322
37
16
BUFFER
Q318
39
BUFFER
Q316
3
4
4
BUFFER
Q358
BUFFER
Q24,26
B.P.F
FL5,Q13,17
B.P.F
FL7,Q2016
48
83
41
BUFFER
Q305
32
BUFFER
Q314
25
22
23
24
32
MIX
Q340,368
MIX
Q340,368
26
33
MIX
Q335,363
27
34
MIX
Q336,361
21
36
MIX
Q380,381
1
22
48
50
11
12
8
7
BUFFER
Q320
31
20
15
9
27
34
BUFFER
Q319
26
33
BUFFER
Q315
1
32
BUFFER
Q317
9
4
20
15
28
21
36
11
48
50
8
7
12
31
9
WAVE SHAPE
Q306,304
BUFFER
Q23,25
B.P.F
FL4,Q12,18
+9V REG
IC2
+3.3V REG
IC2
1
2
7
6
8
TO
A BOARD
SYSTEM
BLOCK
3
TO
A BOARD
I/V CONV
I/V CONV
BLOCK
5
TO
A BOARD
SYSYTEM
BLOCK
6
TO
A BOARD
SYSTEM
BLOCK
29
3D-RST
S-ATT
S-ATT
S-,ODE1
S-MODE2
YUV SW
BLOCK-M
BLOCK-S
PROT MUTE
MID BUSY
X SW
VM LEVEL
V COMP
PROT MUTE
MID BUSY
X SW
VM LEVEL
V COMP
MN C OUT
COMP V OUT
CN6(1/2)
A29
C29
A17
A13
C31
3
5
7
7
D1-CR
D2-CB
C12
D2-Y
A15
D1-Y
C16
D1-CB
C14
D2-CR
A31
PS-V
C18
S-ATT
C22
S-MODE2
A22
S-MODE1
C25
DAT1
A20
SUB Y
C20
SUB C
C27
CLK1
DAT1
CLH1
CLH1
FSC
A
TO
U BOARD
CN2001
F
TO
D BOARD
CN8006
E
TO
D BOARD
CN8004
D
TO
D BOARD
CN8002
V-DRV(+)
CN14
V-DRV(–)
VP
2
4
6
6
H_CENT
CN3
DF_V
DF
1
2
4
4
REGI_MUTE
CN2
HV_PROT
ABL
6
8
8
HP
PIN(E-W)
10
H_DRV
IO0-IO16
A0-A8
WE
AYI
AYO
ACOI
ACI
CSI
SDA
SCL
RS+B
MIO0
I
MIO15
MA0
I
MA8
CE
LCAS
UCAS
IC4 4MBEDO
MWE
MCE
MCAS
Y-IN
YOUT
CBOUT
CROUT
EXT R
EXT G
EXT B
YSYM
MONOUT
RST
HT1M
VT1M
YUV SW
Y1-IN
C-IN
XTAL
Y-IN
CB-IN
CR-IN
EXT-Y
YB-IN
YB-IN
EXT-CB
EXT-CR
SDA
SCL
SCL
X303
3.58MHz
DAT 1
CLK 1
Y-M
CB-M
CR-M
Y-IN
YOUT
CBOUT
CROUT
EXT R
EXT G
EXT B
YSYM
MONOUT
HTIM
VTIM
Y1-IN
C-IN
FSC
XTAL
SDA
SCL
SCL
Y-M
CB-M
CR-M
+11V
+11V
D FOCUS
REGI MUTE
D FOCUS
HP IN
H CENT
H SAW
H CENT
H SAW
V SHIFT
HP IN
H SAW
V SHIFT
HV PROT
Q30
HV PROT
ABL
V DRIVE+
V DRIVE–
VP
HP IN
PIN(E-W)
H DRIVE
+9V
+6V
+3.3V
IC3(1/2)
DF FILTER
IC3(2/2)
DF FILTER
INITIAL
MUTE
Q11,28
7
6
RST
SDA
SCL
XTL
EXTL
VP
HP
R
G
B
YS
VIN
PBO
REAET
SDA
SCL
XTL
EXTL
VP
HP
R
G
B
YS
VIN
PBO
RESET
IC304
SUB-CCD V-CHIP
DAT1
CLK1
X304
12MHz
IC311(2/2)
11
10
14
4
15
9
13
3
5
12
1
2
HD-M
HD-S
HD-S
VD-M
VD-S
M2103
M2151
V
VD-02
VD-03
IC307
DRC_SYNC_SEL
S-HD
S-VD
VD1
HD3
VD2
HD2
SUBG
VD3
SUB YS
IC6
3D COMB FILTER
HH DET
IC301
YCT-SUB
DAT1
CLK1
IC303
YCT-MAIN
RST
IC310
RESET
IC302
MAIN-CCD V-CHIP
RST
X302
12MHz
DAT1
CLK1
IC311(1/2)
IC312
+5V
1
2
2
7
X301
3.58MHz
DTA1
CLK1
D1-Y
D1-CB
D1-CR
D2-Y
D2-CB
D2-CR
RST
A
(3/5) (YCT)
1
TO/FROM
BLOCK DIARAM(4)
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