Sony CPD-G500 Service Manual ▷ View online
CPD-G500
HV Regulator
Circuit Check
Circuit Check
HV Protector
Circuit Check
Circuit Check
Beam Current
Protector Circuit
Check
Protector Circuit
Check
When replacing or repairing the shown below table, the
following operational checks must be performed as a
safety precaution against X-rays emissions from the unit.
SECTION 3
SAFETY RELATED ADJUSTMENT
3-1
Part Replaced (
[)
RV901
HV ADJ
*
Confirm one minute later turning on the power.
a) HV Regulator Circuit Check
1) Enter black crosshatch signal (black on white back-
ground), and check that high voltage is in the speci-
fied range.
[Specification]: 27.00 ±0.10 kV
2) Check that the voltage of D912 cathode on the D
board is 27.0 V or more.
b) HV Protector Circuit Check
1) Enter black crosshatch signal (black on white back-
ground).
2) Apply the specified voltage to the D912 cathode on
the D board, and check that high voltage is 0.1 kV or
less.
[Specification]: 31.90 +0.00/–0.05 V
c) Beam Current Protector Circuit Check
(1st Protector): D Board
1) Apply 4.5 V DC to CN504 0 pin on the D board,
and check high voltage value.
2) Connect constant current source to a section between
T902 (FBT) !¡ pin and !™ pin (GND) on the D
board, and check that high voltage checked in 1)
lowers by 1.50 kV or more when the specified cur-
rent flows to the !¡ pin.
[Specification]: 2.00 +0.00/–0.01 mA
d) Beam Current Protector Circuit Check
(2nd Protector): D Board
1) Connect constant current source to a section between
T902 (FBT) !¡ pin and !™ pin (GND) on the D
board, and check that the voltage of CN504 0 pin
becomes 0 V or less when the specified current flows
to the !¡ pin.
[Specification]: 1.70 +0.00/–0.01 mA
e) Beam Current Protector Circuit Check
: G Board
1) Apply 264 V AC.
2) Enter about 5 V to CN650 4 pin on the G board, and
check that the output voltage of CN653 2 pin is
about 15 V.
3) Enter about 0±0.2 V to CN654 4 pin, and check that
the output voltage of CN653 2 pin becomes 1.0 V
or less.
f) Beam Current Protector Circuit Check
: N Board
1) Check that the protector operates, when the voltage
of CN010 !§ pin on the N board is lowered to 0 V or
less (for more than 2 seconds).
Part Replaced (
])
D Board C920, IC901, R923
R924, R929, R945,
RV901, T902(FBT)
• Mounted D Board
RV901, T902(FBT)
• Mounted D Board
D Board C922, C925, C926,
D912, D914, D915,
D921, Q907, Q908,
R921, R922, R932,
R937, R939, T902(FBT)
• Mounted D Board
D921, Q907, Q908,
R921, R922, R932,
R937, R939, T902(FBT)
• Mounted D Board
D Board C910, C921, C933,
D901, D902, D913,
IC503, IC901, R901,
R920, R928, R930,
R931, R940, R941,
T902(FBT)
• Mounted D Board
IC503, IC901, R901,
R920, R928, R930,
R931, R940, R941,
T902(FBT)
• Mounted D Board
G Board IC652
• Mounted G Board
N Board IC001, R031, R032
• Mounted N Board
CPD-G500
SECTION 4
ADJUSTMENTS
•
Landing Rough Adjustment
1. Enter the full white signal. (or the full black dots signal).
2. Adjust the contrast to the maximum.
3. Make the screen monogreen.
Note: Off the outputs from R ch and B ch of SG.
4. Reverse the DY, and adjust coarsely the purity magnet so
2. Adjust the contrast to the maximum.
3. Make the screen monogreen.
Note: Off the outputs from R ch and B ch of SG.
4. Reverse the DY, and adjust coarsely the purity magnet so
that a green raster positions in the center of screen.
5. Adjust the tilt of DY, and fix lightly with a clamp.
Note: “TILT” = “128”.
Note: “TILT” = “128”.
•
Landing Fine Adjustment
1. Put the set inside the Helmholtz coil. (“LCC SW” = “12”)
2. Input the single green signal and set the “CONTRAST”=
2. Input the single green signal and set the “CONTRAST”=
“255”.
Note: After the W/B adjustment with 9300K, measure an aver-
age of
Σ
Ik when a full white signal is entered in the CONT
MAX/BRT CENT status. Then make adjustment so that
the specified screen can be attained after aging for 2 hours
with Ik equivalent to 30% of the average value.
the specified screen can be attained after aging for 2 hours
with Ik equivalent to 30% of the average value.
3. Demagnetize the metal part of the chassis with the hand de-
gausser and coil degausser, and the CRT surface with the
hand degausser.
Input AC 230V to AC IN, turn on and off the power to per-
form auto degaussing. (Perform auto degaussing by setting
“FUNCTION SW”=1. Return to the original value after
use.)
Demagnetize the CRT surface with the hand degausser
again.
hand degausser.
Input AC 230V to AC IN, turn on and off the power to per-
form auto degaussing. (Perform auto degaussing by setting
“FUNCTION SW”=1. Return to the original value after
use.)
Demagnetize the CRT surface with the hand degausser
again.
Note:
(1) Hand degauss must be used on stand-by or power-off condi-
(1) Hand degauss must be used on stand-by or power-off condi-
tion.
This model has an automatic earth magnetism correction
function by using an earth magnetism sensor and a LCC coil.
When using a hand degauss while monitor (LCC coil) is be-
ing operated, it sometimes gets magnetized, and the system
may not work properly as a result.
This model has an automatic earth magnetism correction
function by using an earth magnetism sensor and a LCC coil.
When using a hand degauss while monitor (LCC coil) is be-
ing operated, it sometimes gets magnetized, and the system
may not work properly as a result.
(2) Adjust in a non-magnetic field.
(3) If adjusting in a magnetic fields, add the shift from the non-
(3) If adjusting in a magnetic fields, add the shift from the non-
magnetic field in your estimation.
4. Attach the wobbling coil to the designated part of the CRT
neck.
5. Attach the sensor of the landing adjustment unit on the CRT
surface.
± 6
± 6
± 6
± 6
± 6
± 6
± 6
± 6
± 6
<Specifications>
Adjust so that the green is within
the specification given right.
4 corner adjust target : within ± 1
Adjust so that the green is within
the specification given right.
4 corner adjust target : within ± 1
The red and blue must be within
the specification given right with
respect to the green.
the specification given right with
respect to the green.
A difference between red and blue
must be within the specification
given right.
must be within the specification
given right.
0 ± 3 0 ± 7.5 0 ± 3
0 ± 3 0 ± 7.5 0 ± 3
0 ± 3 0 ± 7.5 0 ± 3
(µm)
(µm)
10
10
10
10
7
10
10
10
10
(µm)
* Adjustment and measurement should be made at the points
one inch inside the fluorescent screen.
7. For the up/down swing, swing the DY and insert a wedge so
that the up and down pins are equal at the top and bottom.
Adjust the H.TRP VR of DY so that the horizontal trapezoid
is equal at the left and right. Insert the wedge firmly so that
the DY does not shake.
Adjust the H.TRP VR of DY so that the horizontal trapezoid
is equal at the left and right. Insert the wedge firmly so that
the DY does not shake.
8. Check the landing of each corner, and if it does not satisfy
the specification, adjust the landing of four corners using
“LCC LT“, “LCC LB”, “LCC RT” and “LCC RB”.
However, the register adjustment must be limited within the
following range.
“LCC LT“, “LCC LB”, “LCC RT” and “LCC RB”.
However, the register adjustment must be limited within the
following range.
“LCC NS”
128 ± 15
“LCC LT”, “LCC LB”, “LCC RT”, “LCC RB”
128 ± 40
After adjustment, save the service data.
9. Remove the sensor and wobbling coil.
10. Switch the signal to R.G.B., and check that each color is
10. Switch the signal to R.G.B., and check that each color is
pure.
11. Check that the DY is not tilting, and fix the purity Mg with a
white pen. Fix wedges with RTV.
4-1
6. Adjust the DY position and purity, and the DY tilt, and land-
ing of the center and 4 corners with the landing checker.
After adjustment, set “LCC SW” to “13”.
After adjustment, set “LCC SW” to “13”.
•
Write terrestrial magnetism sensor reading VX and VY to
“LCC VX” and LCC VY” respectively. Adjust the land-
ing by moving “LCC NS”, “LCC LT”, “LCC LB”, “LCC
RT” and “LCC RB”. However, the register adjustment
must be limited within the following range.
“LCC NS”
“LCC VX” and LCC VY” respectively. Adjust the land-
ing by moving “LCC NS”, “LCC LT”, “LCC LB”, “LCC
RT” and “LCC RB”. However, the register adjustment
must be limited within the following range.
“LCC NS”
128 ± 15
“LCC LT”, “LCC LB”, “LCC RT”, “LCC RB”
128 ± 40
Save the service data.
Note: Hand degauss must be used on stand-by or power-off condition.
This model has an automatic earth magnetism correction function by using an earth magnetism sensor
and a LCC coil. When using a hand degauss while monitor (LCC coil) is being operated, it sometimes
gets magnetized, and the system may not work properly as a result.
CPD-G500
4-2
Connect the communication cable of the computer to the connector located on the D board. Run the service software and then follow
the instruction.
the instruction.
IBM AT Computer
as a Jig
1-690-391-21
1
A-1500-819-A
Interface Unit
Interface Unit
2
*The parts above ( ) are necessary for DAS adjustment.
1
3
D-sub
(9 Pin [female])
(9 Pin [female])
mini Din
(8Pin)
(8Pin)
4 Pin
3-702-691-01
Connector Attachment
Connector Attachment
3
To BUS CONNECTOR
4 Pin
4 Pin
•
Convergence Rough Adjustment
(1) Receive an image of the white crosshatch signals (white
lines on black).
(2) Place the protrusions of the 6-fold poles magnet attached to
the CRT neck upon each other.
(3) Make rough adjustment of the H and V direction conver-
gence by using 4-fold poles magnet.
•
White Balance Adjustment Specification
1. 9300K
x=0.283 ± 0.005
y=0.298 ± 0.005
y=0.298 ± 0.005
(All White)
2. 6500K
x=0.313 ± 0.005
y=0.329 ± 0.005
y=0.329 ± 0.005
(All White)
3. 5000K
x=0.346 ± 0.005
y=0.359 ± 0.005
y=0.359 ± 0.005
(All White)
•
Vertical and Horizontal Position and Size
Specification
Specification
•
Focus adjustment
Adjust the focus volume 1 and 2 for the optimum focus.
•
Convergence Specification
B
a
a 2.0 mm
b 2.0 mm
b 2.0 mm
a
b
b
A
MODE
A
B
4 : 3
388
291
5 : 4
364
291
B
A
A
0.20 mm
B
60kHz
60kHz>
0.24 mm
0.24 mm
0.28 mm
V
fH
* Set so that the protruding parts of
the 2 magnet rings agree with
each other.
each other.
XBV
XCV
B
R
B
R
R
B
B
B
R
R
R
B
B
R
TLV
TLH
YBH
YCH
R B
R B
H-TRP
YBH
TLH
APH
XCV
XBV
YCH
Purity
4-pole magnet
6-pole magnet
2-pole magnet
Focus 1
Focus 2
FBT
5-1
5-2
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAMS
HD
21
19
18
17
16
20
12
7
6
2
4
13
14
8
9
10
HOST GND 1
DDC SCL 1
DDC +5V 1
VS1
HS/VS1
DDC SDA 1
INPUT SEL
G. SYNC DET
SYNC ON G
CLP
C. BLK
SCL
SDA
H. SYNC
V. SYNC
HFBP
B
A
TO N BOARD
CN001
CN001
C
TO N BOARD
CN010
CN010
TO N BOARD
CN002
CN002
16
18
20
24
25
22
23
14
12
10
8
7
6
5
4
3
2
1
STBY+5V
RXD
TXD
+15V
+15V
–15V
–15V
HDF
VDF
ABL
HV DET
S0
H CENT
S6
HSPBAL
HLINBAL
H SIZE
H SHAPE
HDF
VDF
ABL DET
HV DET
S0
H CENT
S6
HSPBAL
HLIN
H SIZE
HSP
5
3
1
35
32
29
23
21
19
26
27
28
11
9
7
BIN2
GIN2
RIN2
ROUT
GOUT
BOUT
41
38
33
12
8
2
2
6
11
ROUT
GOUT
BOUT
14
6
4
ROUT
GOUT
BOUT
RIN
GIN
BIN
RIN
GIN
BIN
R DET IN
G DET IN
B DET IN
D/A4
D/A3
D/A2
CLP
C. BLK
SCL
SDA
BIN1
GIN1
RIN1
18
14
25
INPUT SW
G. DET
SYNC SEP OUT
2
4
6
BIN2
GIN2
RIN2
CN402
5BNC
R
IC407
CN403
INPUT1(HD15)
CN504
CN401
HD15
5
4
3
2
1
10
15
9
14
8
13
7
12
6
11
H DRV
Q502, 503
H OUT
Q509
H OUT, BUFF
Q515, 520
T501
HDT
IC404
OSD
H CENT
Q514
IC501
PIN CONTROL
IC503
AMP
IC502
H CENT OUT
T502
HCT
+12V
T503
HST
L505
HOC
HOC
OUT
HFBP
TH DET
VDF
V RET
V SHAPE
V+
V–
V–
V+
HDF
S0-4, S6
S5
HV DET
+220V
+220V
+220V
+12V
PIN OUT
Q508
H DRV
Q701-705
S CAP CHANGE
Q501, 506, 507,
510-513, 517, 525
HL OUT
Q516, 518
RELAY DRV
Q519
V DRV
Q706, 707
T701
DFT
HV DET
Q907, 908
HV DRV
Q903, 904
HV OUT
Q906
HV REG SW
Q905
T901
HRC
HRC
T902 FBT
HV
HV
FC
FC
RV901
HV ADJ
FV
FV
IC401
INPUT SELECT
IC402
RGB DRIVE
IC403
RGB AMP
4
9
13
1
18
19
20
21
15
16
17
12
11
10
17
6
5
14
11
12
7
3
5
7
26
25
24
4
3
5
6
7
5
3
1
2
4
4
5
8
1
2
5
2
5
2
1
3
3
9
1
5
14
3
6
7
8
14
13
15
14
13
ROUT
GOUT
BOUT
GND
RCI
GCI
BCI
PWM1
XT1
XT0
H. SYNC
V. SYNC
HFBP
SCL
SDA
SCL
SDA
VS
Hfly
RIN
GIN
BIN
IC406
CUTOFF AMP
X401
8MHz
G2 CONT
Q406, 407, 410
IC405 (1/2)
+
–
PWM2
PWM3
PWM4
BUFFER
Q101,
Q201,
Q201,
Q301
9
1
2
4
6
8
HEATER
STBY+5V
1W+5V
+80V
+220V
+12V
5V
5V-2
+80V
+220V
+12V
PS401 1A
CN405
G2
1
G2
CN406
5
3
1
7
KR
KG
KB
HEATER+
CN407
5
3
1
7
KR
KG
KB
HEATER+
FV
FC
HV
CN408
V901
PICTURE TUBE
1
G2
CN506
E
TO G BOARD
CN652
CN652
A
(VIDEO AMP, RGB OUT)
D
(DEFLECTION)
D
TO N BOARD
CN011
CN011
20
18
16
14
12
10
25
24
23
22
21
19
8
6
3
1
4
STBY+5V
1W+5V
ECO SW
PWR SW
DGUS SW
HTR SW
TH DET
S4
S3
S5
S2
S1
HFBP
HD
V RET
VSHAPE
+12V
TH DET
S4
S3
S5
S2
S1
HFBP
HD
V RET
VSHAPE
CN505
2
3
4
STBY+5V
RXD
TXD
CN503
ECS
2
4
1
6
+15V
–15V
+12V
+80V
CN501
CN508
F
TO G BOARD
CN653
CN653
1
2
3
4
5
6
STBY+5V
1W+5V
ECO SW
PWR SW
DGUS SW
HTR SW
CN502
+80V
–15V
+15V
+12V
H
TO G BOARD
CN650
CN650
5
4
3
2
1
+220V
+220V
H CENT L
H CENT N
H CENT H
HDIN
PWMOUT
ERRIN
O2
O3
HLIN
O4
–4
+1
O1
ABL
ABL DET
HSP
H SIZE
S5-1
–3
H SENT H
H SENT L
H SENT N
H SENT H
H CENT
HSPBAL
VCC
VEE
+VIN
–VIN
G
TO G BOARD
CN654
CN654
PIN DRV
Q504, 505
GAIN SW
Q526
Q523
PIN AMP
Q524
TH DET
Q521, 522
2
1
6
5
17
14
16
15
11
11
15
14
5
7
11
2
T505
HLC
4
1
2
3
5
2
14
10
12
3
11
5
4
2
3
5
PWMOUT
+
HVD
HDIN
ERROUT
–
IC901
HV CONTROL
ABL
OUT VCC
–
+
OUT
IC701
V DY OUT
RY501
V. DY
R. DY
S5
2
3
9
10
5
6
V. DY C
V. DY H
H. DY H
H. DY H
H. DY C
H. DY C
CN509
S5
B-SS3484 <J..> -BD1-EPS05
RIK
GIK
BIK
DRIFT CORRECT
Q401
S5-1
INPUT2(BNC)
CONNECTOR PANEL
G
B
HD
VD
OSD R
OSD G
OSD B
OSD BLK
V-DET
25
21
30
22
23
D/A5
CLP
BLK
SCL
SDA
VCC KICK
Q402
5V
ROUT
GOUT
BOUT
FBLK
AV
17
8
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