THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
LUBW/CA/1AC120V
Model
PDP-V402
Note: Pages 26 - 77 and 82 - 89 were intentionally left out.
In PDP-V402, there are two different models (original model and value analysis model).
Confirm the mark and serial No. of the product rear side, and use each service manual.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2000
T–ZZA OCT. 2000 Printed in Japan
Page 2
PDP-V402
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to
cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 – Proposition 65
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts
must be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les
pièces de remplacement doivent avoir la même désignation.
1.1 SAFETY PRECAUTIONS
NOTICE : Comply with all cautions and safety related notes located
on or inside the cabinet and on the chassis.
The following precautions should be observed :
1. When service is required, even though the PDP UNIT an isolation
transformer should be inserted between the power line and the
set in safety before any service is performed.
2. When replacing a chassis in the set, all the protective devices
must be put back in place, such as barriers, nonmetallic knobs,
adjustment and compartment covershields, isolation resistorcapacitor, etc.
3. When service is required, observe the original lead dress. Extra
precaution should be taken to assure correct lead dress in the
high voltage circuitry area.
4. Always use the manufacture's replacement components.
Especially critical components as indicated on the circuit diagram
should not be replaced by other manufacture's.
Furthermore where a short circuit has occurred, replace those
components that indicate evidence of overheating.
5. Before returning a serviced set to the customer, the service
technician must thoroughly test the unit to be certain that it is
completely safe to operate without danger of electrical shock,
and be sure that no protective device built into the set by the
manufacture has become defective, or inadvertently defeated
during servicing. Therefore, the following checks should be
performed for the continued protection of the customer and
service technician.
6. Perform the following precautions against unwanted radiation
and rise in internal temperature.
• Always return the internal wiring to the original styling.
• Attach parts (Ground, Rear Cover, Shield Case) surely after
disassembly.
7. Perform the following precautions for the PDP panel.
• When the front case is removed, make sure nothing hits the
panel face, panel corner, and panel edge (so that the glass does
not break).
• Make sure that the panel vent does not break. (Check that the
cover is attached.)
• Handle the FPC connected to the panel carefully.
Twisting or pulling the FPC when connecting it to the connector
will cause it to peel off from the panel.
8. Pay attention to the following.
• Be sure to wire the fan. If the fan does not work, the temperature
will rise and cause the protection circuit to operate.
• When the front case is removed, infrared ray is radiated and
may disturb reception of the remote control unit.
• Pay extreme caution when the front case and rear panel are
removed because this may cause a high risk of disturbance to
TVs and radios in the surrounding.
2
Page 3
Leakage Current Cold Check
With the AC plug removed from an AC power source, place a
jumper across the two plug prongs. Turn the AC power switch on.
Using an insulation tester (DC 500V), connect one lead to the
jumpered AC plug and touch the other lead to each exposed metal
part (input/output terminals, screwheads, metal overlays, control
shafts, etc.), particularly any exposed metal part having a return
path to the chassis. Exposed metal parts having a return path to the
chassis should have a minimum resistor reading of 0.3MΩ and a
maximum resistor reading of 5MΩ. Any resistor value below or
above this range indicates an abnormality which requires corrective
action. Exposed metal parts not having a return path to the chassis
will indicate an open circuit.
Leakage Current Hot Check
Plug the AC line cord directly into an AC power source (do not use
an isolation transformer for this check).
Turn the AC power switch on.
Using a "Leakage Current Tester (Simpson Model 229 equivalent)",
measure for current from all exposed metal parts of the cabinet
(input/output terminals, screwheads, metal overlays, control shaft,
etc.), particularly any exposed metal part having a return path to the
chassis, to a known earth ground (water pipe, conduit, etc.). Any
current measured must not exceed 0.5mA.
PDP-V402
1.2 PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in PIONEER set have special
safety related characteristics. These are often not evident from
visual inspection nor the protection afforded by them necessarily
can be obtained by using replacement components rated for higher
voltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in this Service Manual.
Electrical components having such features are identified by marking
with a
Manual.
The use of a substitute replacement component which dose not have
the same safety characteristics as the PIONEER recommended
replacement one, shown in the parts list in this Service Manual, may
create shock, fire or other hazards.
Product Safety is continuously under review and new instructions
are issued from time to time. For the latest information, always
consult the current PIONEER Service Manual. A subscription to, or
additional copies of, PIONEER Service Manual may be obtained at
a nominal charge from PIONEER.
on the schematics and on the parts list in this Service
Reading should
not be above
0.5 mA
Earth ground
Device
under
test
Also test with plug
reversed
(Using AC adapter
plug as required)
Test all exposed
metal surfaces
Leakage
current
tester
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE SET TO THE CUSTOMER.
3
Page 4
PDP-V402
1.3 CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT
7 Charged Section
The places where the commercial AC power is used without
passing through the power supply transformer.
If the places are touched, there is a risk of electric shock. In addition,
the measuring equipment can be damaged if it is connected to the
GND of the charged section and the GND of the non-charged
section while connecting the set directly to the commercial AC
power supply. Therefore, be sure to connect the set via an insulated
transformer and supply the current.
7 Charged Section
(Power supply primary side)
1. AC Power Cord
2. AC Inlet with Filter
3. Power Switch (S1)
4. Fuse (In the MAIN POWER ASSY)
5. STB Transformer and Converter Transformer
(In the MAIN POWER ASSY)
6. Other primary side of the MAIN POWER ASSY
ANALOG VIDEO ASSY
3D Y/C ASSY
7 High Voltage Generating Point
The places where voltage is 100V or more except for the charged
places described above. If the places are touched, there is a risk of
electric shock.
1. MAIN POWER ASSY ...................................... (170V)
2. X DRIVE (A) ASSY ......................................... (170V)
3. X DRIVE (B) ASSY ......................................... (170V)
4. Y DRIVE (A) ASSY ......................................... (170V)
5. Y DRIVE (B) ASSY ......................................... (170V)
6. SCAN MODULE (A) and (B) .......................... (150V)
For the places, refer to the EXPLODED VIEWS, the SCHEMATIC
DIAGRAM and the PCB CONNECTION DIAGRAM sections.
Part is charged section.
Part is the high voltage generating points other than the
charged section.
X DRIVE (B) ASSY
AC Inlet
Power Switch (S1)
X DRIVE (A) ASSY
MAIN POWER ASSY
Y DRIVE (A) ASSY
SCAN MODULE (B)
SCAN MODULE (A)
Y DRIVE (B) ASSY
4
Page 5
2. EXPLODED VIEWS AND PARTS LIST
NOTES :Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.
The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Screw adjacent to mark on the product are used for disassembly.
27CushionAEB1342
28Front Case C Service AssyAEA1030
29Front Case D Service AssyAEA1031
30Front Case A Service AssyAEA1034
31Front Case B Service AssyAEA1035
11
Page 12
PDP-V402
2.6 MAIN UNIT SECTION (3/3)
55
54
17
18
19
5
16
5
5
F
15
5
39
38
40
56
53
55
54
5
16
5
5
6
12
5
10
5
5
11
N
14
5
6
13
11
5
13
5
6
10
5
20
34
23
5
E
40
5
40
13
5
D
22
23
U
49
R
46
5
6
5
33
S
47
50
V
T
48
5
9
51
5
M
5
5
21
8
8
5
10
5
5
4
3
2
44
6
44
5
6
1
45
7
5
24
O
27
24
28
6
5
5
5
26
25
P
25
12
Page 13
PDP-V402
5
29
5
5
29
5
5
H
5
35
6
5
16
6
52
G
5
17
31
5
32
8
5
36
5
16
8
8
37
30
8
8
8
17
31
5
32
8
8
Mark No. DescriptionPart No.
21MAIN POWER ASSYAWR1077
22Shield Case BANK1517
23PCB SpacerAEC1121
24SCAN MODULE (A)AXF1104
25SCAN MODULE (B)AXF1105
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PAR TS LIST" or "PCB PARTS LIST".
ADX2607
G
OTL CONTROL (B) ASSY
V
(AWZ6178)
RCC CONTROL (B) ASSY
S
(AWZ6175)
CN5004
Y2
ADX2607
G
CN5001
Y16
ADX2361
MAIN POWER ASSY
M
(AWR1077)
RCC CONTROL (C) ASSY
T
(AWZ6176)
ADX2652
H
ADX2646
Y1
CN5003
ADX2609
E
Y1
CN4008
X4
FAN MOTOR ×2
AXM1038
C
CN5008
H
A
Y5
B
ADX2630ADX2341
CN5003
G
B
ADX2607
CN7250
CN7003
ADX2608
CN7352
CN7501CN7350
ADX2644
ADX2645
ADX2651
D.RESET
VGA60_75
ADX2649
D
D 1/10- D 10/10
DIGITAL VIDEO ASSY
(AWP1069)
J7800
G
and
H
CN5007
Y4
CN5007
Y4
C
D
CN7750CN7800
L
B8B-PH-SM3
SYNC DET
ASSY
(AWZ6548)
5
FRONT KEY
I
ASSY
(AWZ6525)
ADX2639
ADX2632 ADX2633 ADX2633 ADX2634
ADX2635 ADX2636 ADX2638 ADX2638 ADX2637
6
7
To ADDRESS
MODULE
23
8
Page 24
1
PDP-V402
23
4
CN1602
N
SP2
A
M
CN3203
P6
M
CN3404
P4
M
CN3305
P3
D
CN6701
E11
D
CN6702
E12
D
CN6703
E13
E
X DRIVE (A) ASSY
(AWP1078)
E6
B
CN6551
D
PLASMA PANEL ASSY
(AAV1235)
C
F
X DRIVE (B) ASSY
(AWP1079)
D
M
CN3305
P3
24
CN6706
D
E16
1234
D
CN6707
E17
D
CN6708
E18
Page 25
5
678
PDP-V402
D
CN6704
E14
D
CN6705
E15
SCAN MODULE (B)
(AXF1105)
P
SCAN MODULE (B)
(AXF1105)
CN1602
N
SP2
M
G
Y DRIVE (A) ASSY
(AWZ6533)
P2
M
CN3405CN3304
P5
M
CN3204
P7
A
D
CN6553
E8
B
P
SCAN MODULE (A)
(AXF1104)
O
H
Y DRIVE (B) ASSY
(AWP1077)
CN6553
D
M
CN3304
C
E8
P2
D
5
CN6709
E19
D
CN6710
E20
SCAN MODULE (A)
(AXF1104)
O
6
CN6552
D
E7
25
7
8
D
Page 26
1
PDP-V402
3.30 MAIN POWER ASSY
To POWER SWITCH
A
23
NOTE FOR FUSE REPLACEMENT
CAUTION: FOR CONTONUED PROTECTION AGAINST RISK OF FIRE.
PEPLACE ONLY WITH SAME TYPE AND RATINGS ONLY.
J
M
4
MAIN POWER ASSY (AWR1077)
R
CN7101
CN7102
B
C
S
CN7151
CN7152
T
CN7201
CN7202
D
78
M
B 1/6
CN7005
M2
1234
Page 27
5
678
PDP-V402
7)
R
CN7101
CN7102
1000P
/AC400
1000P
/AC400
: Charged section
1000P
/AC400
CN7251
1000P
/AC400
U
H
CN5003
G
CN5003
Y1
Y1
CN5001
G
Y16
X1
E
CN4003
X1
SP1
CN1601
CN4003
F
N
X10
CN4001
E
A
B
S
CN7151
CN7152
T
CN7201
CN7202
1000P
/AC400
1000P
/AC400
V
CN7301
SP4
CN1604
N
E1
CN6102
C
D 1/10
Y2
CN5004
G
CN4004
E
X2
Be sure to use parts od identical designation.
B 6/6
CN7900
M20
D
To FAN
M
5
6
7
8
79
Page 28
1
PDP-V402
3.31 SUB POWER SUPPLY
A
SUB POWER ASSY
N
(AWZ6173)
M
CN3305
P3
B
23
4
SP3
M
CN3406
C
P9
SP4
B 5/6
CN7650
M14
C 2/4
CN2204
A4
SP5
D
80
N
1234
Page 29
5
678
PDP-V402
A
G
E
CN5005
CN4005
Y3
X3
B
C
SP6
Q
CN3202
B1
N
5
6
7
8
81
D
Page 30
1
Y
L
23
PDP-V402
4. PCB CONNECTION DIAGRAM
NOTE FOR PCB DIAGRAMS:
1. Part numbers in PCB diagrams match those in the schematic
A
diagrams.
2. A comparison between the main parts of PCB and schematic
diagrams is shown below.
Symbol in PCB
Diagrams
BCE
BCE
DGS
Symbol in Schematic
Diagrams
BCE
BCE
BCEBCE
DGSDGS
Part Name
Transistor
Transistor
with resistor
Field effect
transistor
4.1 INPUT CONTROL, FRONT KEY, SYNC DET ASSYS
Symbol in PCB
Diagrams
3. The parts mounted on this PCB include all necessary parts
for several destination.
For further information for respective destinations, be sure
to check with the schematic diagram.
4.10 SUB POWER, RCC CONTROL (A), (B), (C),
OTL CONTROL (A), (B) ASSYS
4
CN3202
A
B
Q
B1
C
CN2204
A4
M
CN3406
P9
B
CN7650
M14
M
CN3305
P3
Q1904Q1901 Q1902IC1903
C
RCC CONTROL (C) ASSY
T
IC1902IC1901
RCC CONTROL (B) ASSY
S
(ANP1867-E)
CN3201
M
D
Q7201Q7151IC7201IC7151
M
CN3202
M
CN3401
M
(ANP1867-E)
CN3402
126
SIDE A
N
ST
1234
Page 67
5
SUB POWER ASSY
N
678
PDP-V402
A
B
(ANP1867-E)
CN5005
G
IC1601IC1602IC1603
RCC CONTROL (A) ASSY
R
)
IC1604
(ANP1867-E)
Y3
OTL CONTROL
U
(A) ASSY
CN4005
E
(ANP1867-E)
X3
VR1601
OTL CONTROL
V
(B) ASSY
C
(ANP1867-E)
CN3301
M
Q7101IC7101Q7253
5
M
CN3302
CN3303
M
Q7252
IC7251
6
Q7251
7
N
CN3403
M
Q7303
Q7302
IC7301
Q7301
RUV
8
D
127
Page 68
1
S
PDP-V402
23
4
A
B
SUB POWER ASSY
N
OTL CONTROL
C
V
(B) ASSY
OTL CONTROL
U
(A) ASSY
RCC CONTROL (A) ASSY
R
(ANP1867-E)(ANP1867-E)(ANP1867-E)
D
SIDE B
128
N
RUV
1234
Page 69
5
678
PDP-V402
A
B
67-E)
RCC CONTROL (B) ASSY
S
RCC CONTROL (C) ASSY
T
(ANP1867-E)
C
(ANP1867-E)(ANP1867-E)
D
N
5
6
7
ST
129
8
Page 70
1
PDP-V402
4.11 3D Y/C ASSY
3D Y/C ASSY
Q
A
B
23
4
Q3220
Q3208
|
Q3223
Q3222
Q3214
|
Q3218
Q3224
Q3201
IC3203
Q3225
Q3203
Q3204
Q3205
Q3212
IC3205
Q3206
Q3210
C
IC3204
IC3202
IC3206
IC3201
D
C
CN2201
A1
N
CN1607
SP6
CN7354
B
M1
CN1002
A
G2
(ANP1974-A)
SIDE A
130
Q
1234
Page 71
1
3D Y/C ASSY
Q
234
PDP-V402
A
B
C
D
(ANP1974-A)
SIDE B
Q
1
2
3
131
4
Page 72
1
23
PDP-V402
4.12 IR RECEIVER, FAN RELAY ASSYS
A
J
IR RECEIVER ASSY
B
CN7001
M12
(ANP1968-C)
B
CN7901
M19
FAN RELAY ASSY
K
4
B
(ANP1971-B)
SIDE A
FAN MOTOR
SIDE B
C
J
IR RECEIVER ASSY
FAN RELAY ASSY
K
(ANP1968-C)
(ANP1971-B)
D
132
J
K
1234
Page 73
5. PCB PARTS LIST
NOTES:•Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The mark found on some component parts indicates the importance of the safety factor of the part.
•
Therefore, when replacing, be sure to use parts of identical designation.
When ordering resistors, first convert resistance values into code form as shown in the following examples.
•
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
INPUT CONTROL ASSYAWZ6554
SUB POWER ASSYAWZ6173
RCC CONTROL (A) ASSYAWZ6174
RCC CONTROL (B) ASSYAWZ6175
RCC CONTROL (C) ASSYAWZ6176
OTL CONTROL (A) ASSYAWZ6177
OTL CONTROL (B) ASSYAWZ6178
NSPCOMPLEX (B) ASSYAWV1861
CONTROL ASSYAWZ6545
FRONT KEY ASSYAWZ6525
IR RECEIVER ASSYAWZ6526
SYNC DET ASSYAWZ6548
3D Y/C ASSYAWQ1055
ANALOG VIDEO ASSYAWQ1056
DIGITAL VIDEO ASSYAWP1069
X DRIVE (A) ASSYAWP1078
X DRIVE (B) ASSYAWP1079
2) (Procedure 3)Vertical sync freerunning frequency
adjustment
3) (Procedure 8)Factory data setting (At ASSY replacement)
(Read the preset data before replacing
ASSY)
4) (Procedure 9)White balance adjustment
(if white balance is deviated)
MAIN POWER ASSY
1) (Procedure 4)VADR voltage (60V) adjustment
VSUS voltage (170V) adjustment
VOFS voltage (140V) adjustment
X DRIVE ASSY, Y DRIVE ASSY
1) (Procedure 5)VRN voltage adjustment
VH voltage adjustment
2) (Procedure 7)Sustain pulse waveform adjustment
(X PSUS, Y PSUS)
3) (Procedure 9)White balance adjustment
(if white balance is deviated)
DIGITAL VIDEO ASSY
1) (Procedure 6)DIP SW setting of the pulse value
2) (Procedure 7)Sustain pulse waveform adjustment
(X PSUS, Y PSUS)
3) (Procedure 9)White balance adjustment
(if white balance is deviated)
PDP PANEL ASSY
1) (Procedure 4)VADR voltage (60V) adjustment
VSUS voltage (170V) adjustment
VOFS voltage (140V) adjustment
2) (Procedure 5)VRN voltage adjustment
VH voltage adjustment
3)DIP SW setting of the pulse value
4) (Procedure 7)Sustain pulse waveform adjustment
(X PSUS, Y PSUS)
5) (Procedure 9)White balance adjustment
3D Y/C ASSY
X DRIVE (B) ASSY
ANALOG VIDEO ASSY
X DRIVE (A) ASSY
MAIN POWER ASSY
Y DRIVE (A) ASSY
CONTROL ASSY
Y DRIVE (B) ASSY
DIGITAL VIDEO ASSY
145
Page 86
PDP-V402
5V
GND
H : 20µs/div V : 2V/div
A
GND
H : 2ms/div V : 2V/div
6.2 ADJUSTMENTS OF PARTS
Procedure
1
2
3
AdjustmentInput Signal
Blanking pulse width
100% white signal
adjustment (CBLK)
No-input
VCO control voltage
adjustment
Vertical sync
freerunning
frequency
(NO SYNC
displayed on screen)
No-input
(NO SYNC
displayed on screen)
adjustment
Adjusting Point
VR2802 (VBLK)
VR2803 (HBLK)
(ANALOG VIDEO
ASSY)
L7650
(CONTROL
ASSY)
VR7650
(CONTROL
ASSY)
Adjusting Method
Observe Pin 7 (CBLK) of IC2801, adjust ∆tV shown in Fig. 1 to
150mS ± 20mS, and ∆tH to 1.7mS ± 200nS.
C BLK
V blanking
period
tV
150µs±20µs
C BLK
H blanking
period
tH
1.7µs±200µs
Fig. 1
Note: When this adjustment is not performed properly, the black
level correction circuit does not operate. The 100% white
signal waveform does not fall towards the black side, and
emission points become inconsistent on the screen.
Adjust TP 7651 so that the DC voltage of point A of the waveform
in Fig. 2 becomes 5V ± 0.1V.
Fig. 2
Note: When this adjustment is not performed properly, the
screen flows slantingly when NTSC signals are input.
1. Connect TP K7503 to TP K7502 (GND).
2. Check the waveform of TP 7655 in Fig. 3, and adjust so that
the frequency becomes 43.0Hz ± 0.5 Hz.
3. Then disconnect the TP K7503 and TP K7502 (GND), and
check that the frequency is 52.5 Hz ± 3 Hz.
Fig. 3
Note: When this adjustment is not performed properly, the
screen moves or flows up and down when NTSC signals
are input.
VSUS (sustain power supply voltage)
Check the drive voltage label value (Note 4), adjust VR3301 so
that value between TP3301 (VSUS) and TP3302 (SUS. GND)
becomes this value.
VADR (address power supply voltage)
VADR, VSUS, VOFS
voltage adjustment
4
100% white signal
VR3301
(VSUS)VR3401
(VADR)
VR3601 (VOFS)
(MAIN POWER
Assy)
Check the drive voltage label value, adjust VR3401 so that value
between TP3401 (VADR) and TP3402 (ADR. GND) becomes
this value.
VOFS (offset power supply voltage)
Check the drive voltage label value, adjust VR3601 so that value
between TP3601 (VOFS) and TP3602 (OFS. GND) becomes
this value.
Note: When the V sus voltage adjustments are not performed
properly, dot-like blinking luminance points appear. If
deviated greatly from the right adjustment, PDP will stop
discharging.
When the VADR and VOFS voltage adjustments are not
performed properly, dot-like blinking luminance points
146
appear. If deviated greatly from the right adjustment,
these will become white.
Enlarge this portion, and check that this
is the sub field with sustain emission
Procedure
5
6
7
AdjustmentInput Signal
VRN, VH voltage
adjustment
DIP SW setting of
the pulse value
Sustain pulse
waveform
All white 100% signal
––––––
All white 100% signal
adjustment
Adjusting Point
VR4002 (VRN)
(X DRIVE (A)
Assy)
VR5002 (VH)
(Y DRIVE (A)
Assy)
S6603
(DIGITAL VIDEO
Assy)
VR6551
(XSUS-U)
VR6552
(YSUS-U)
VR6553
(XSUS-D)
VR6554
(YSUS-D)
Adjusting Method
VRN (minus reset power supply voltage)
Check the drive voltage label value at the top inside the unit,
adjust VR4002 so that value between TP4021 (VRN) and
TP4022 (RNGND) becomes this value.
VH (scan IC power supply voltage) (Note 1)
Check the drive voltage label value at the top inside the unit,
adjust VR5002 so that value between TP5035 (VHY) and TP5034
(GNDH) becomes this value.
Note: When the VRN voltage adjustment is not performed properly,
dot-like blinking luminance points appear. If deviated
greatly from the right adjustment, PDP will stop discharging.
When the VH voltage adjustment is not performed properly,
dot-like blinking luminance points appear. If deviated
greatly from the right adjustment, these will become white.
Check the pulse value when replacing the DIGITAL VIDEO
ASSY and set the data again for the new Assy with the DIP SW.
Note: If set incorrectly, the number of drive pulses generated will
change, and affect the brightness of the screen. PD
operates if the power consumption exceeds the normal
level.
Check the waveforme shown in Fig.4 at TP4027 (XPSUS),
TP4012 (XPSUS) on the X DRIVE (A) ASSY and X DRIVE (B)
ASSY, TP5004 (YPSUS), TP5002 (YPSUS) on the Y DRIVE (A)
ASSY and Y DRIVE (B) ASSY, then look at the waveform of the
scanned portion, and find the sub field with sustain emission
(refer to Note 2: Sustain emission.)
Enlarge the waveform of the sustain pulse portion shown in Fig.
4 in the sub field with sustain emission, and adjust as shown in
Fig. 5. If not adjusted properly, the slanting portion and base
portion will distort as shown in Fig. 6 and Fig. 7.
Factory data setting
8
9
White balance
adjustment
––––––
––––––
(DIGITAL VIDEO
Assy)
Fig. 4
Fig. 5 Fig. 6 Fig. 7
Note: When the adjustment is not performed properly, dot-like
blinking luminance points will increase.
When replacing the CONTROL ASSY, read the following data
Memory data
(CONTROL
ASSY)
before ASSY replacement.
1) picture quality, white balance, phase data
2) HOUR METER data (Panel operating time from shipment)
Set the above data again for the new ASSY using the RS232C
command.
Adjust based on the "6.3 WHITE BALANCE ADJUSTMENT". After adjusting,
memorize the setting.
147
Page 88
PDP-V402
Note 1: Take note that GND H differs from the GND potential in
unit.
Note 2: Sustain emission
The sustain waveform must be adjusted using the sub field
with sustain emission. As the scanned portion becomes the
waveform shown in Fig. 8 in the sub field with sustain
emission when 100% white signal is input, find and adjust
this portion. Find it by differentiating it from the scanned
portion of sub fields without sustain emission which has a
distorted waveform as shown in Fig. 9.
Note here
Fig. 8 Fig. 9
If distorted here, it means that
the address is selected and
there is no sustain emission.
Note 3: Screen when RAMP signal is input
Note 4: Position where drive voltage label is pasted
Drive Voltage Label
Notes:
÷ The ANALOG VIDEO ASSY (Procedure 1), and CONTROL
ASSY (Procedure 2) (Procedure 3) adjustments need not be
performed again in this unit if these ASSYs have been replaced.
÷ Other adjusting points which need not be adjusted again in this
unit when other ASSYs are replaced are as follows.
÷ If adjusted VRs of the above MAIN POWER ASSY and SUB
POWER ASSY are rotated accidentally, adjust to the following
values.
MAIN POWER ASSY
VR3501 (STB+5V): Adjust the DC voltage value between
TP3501 (STB+5V) and TP3503 (STB.
GND) to +5V±0.1V.
VR3201 (Vcc+5V):Adjust the DC voltage value between
TP3201 (Vcc+5V) and TP3202 (D.
GND) to +5.05V±0.1V.
VR3101 (+B 215V): Adjust the DC voltage value between
TP3101 (+B) and TP3102 (P.GND) to
+215V±0.5V.
VR3801 (Vsus UVP): Adjust the DC voltage value between
the R3860 lead (Pin 6 of IC3805) and
R3863 lead (+ lead of C3814) to
0±10mV.
SUB POWER ASSY
VR1601 (VCSP 40V): Check the drive voltage label value,
and adjust the DC voltage value between
TP1603 (VCSP) and TP1604 (CSP.
GND) becomes this value.
148
Note: Take note that the CSP.GND or GND_H differs from the
GND potential of this unit.
Never short between CSP. GND and other GND or
GND_H and other GND.
Page 89
6.3 WHITE BALANCE ADJUSTMENT
Set CONTRAST to 180 and BRIGHT to 128 in the following
adjustments.
1. Black level adjustment
1) Input the RAMP signal.
2) Monitor the TP terminals R: K6101, G: K6102, and B:
K6103 on the DIGITAL VIDEO ASSY, and adjust the R, G,
and B LOW LIGHT so that the black level (0 IRE) becomes
1.9V.
2. LOW LIGHT adjustment
1) Input the RAMP signal.
2) Adjust the R, G, B LOW LIGHT so that the point that starts
to illuminate from black becomes gray on the screen.
3. HIGH LIGHT adjustment
1) Input the RAMP signal.
2) Monitor the TP terminals R:K6101, G:K6102, and
B:K6103 on the DIGITAL VIDEO ASSY, and adjust
the R, G, and B HIGH LIGHT so that the white level
(100 IRE) becomes 3.6V with the R and G, and 4.0V
with the B.
3) Input the white signal (80 IRE).
4) Adjust the R, G, B HIGH LIGHT so that the screen
becomes bluish-white (T=8500 [K], dev=0.000 [uv]).
4. Adjustment voltage check
1) Input the RAMP signal.
2) Monitor the TP terminals R:K6101, G:K6102, and
B:K6103 on the DIGITAL VIDEO ASSY, and check
that the black level (0 IRE) is 1.9V±0.1V and the white
level (100 IRE) is 3.6V or 4.0V±0.2V.
White (100 IRE): 3.6V(R, G)
4.0V(B)
PDP-V402
Memory for White Balance Adjustment
Memory for White Balance Adjustment
Color Mode 1Composite video inputNTSC
Y/C inputNTSC
RGB1 (BNC input)NTSC
RGB2NTSC
(Mini D-SUB terminal input)
Color Mode 2Composite video inputNTSC
Y/C inputNTSC
RGB1 (BNC input)NTSC
RGB2NTSC
(Mini D-SUB terminal input)
Color mode 1 produces normal picture quality and white balance
adjustment state.
Color mode 2 produces the optimum picture quality and white
balance adjustment state for the shooting mode.
The white balance adjustment is performed for every input function
and mode.
The memorized data synchronizes with the input function and input
signal, and it is switched automatically.
FACTORY
FACTORY
VGA
PC98
MAC
FACTORY
VGA
PC98
MAC
FACTORY
FACTORY
FACTORY
VGA
PC98
MAC
FACTORY
VGA
PC98
MAC
FACTORY
Black (0 IRE): 1.9V
RAMP signal input
Picture Quality Check
1. Face color check (color balance check)
Check the face color of LD still images of people after the white
balance adjustment, and adjust COLOR and TINT if the color
is not natural, and memorize the value.
2. Sharpness check
Set the value to 80 and check the picture quality.
(Reference) Color mode 2 (shooting mode) white
balance adjustment
1) Input the window step screen 0dB (20%, 80%).
2) Using a white balance meter, adjust as the following data;
When 20 IRE level point: T=4500 [K], dev=0.000 [uv], LOW
LIGHT adjustment
When 80 IRE level point: T=4500 [K], dev=0.000 [uv], HIGH
LIGHT adjustment
LOW LIGHT adjustment
2040 6080 60 40 2015105
Window Step Screen
HIGH LIGHT adjustment
149
Page 90
PDP-V402
Adjustment and Measurement Points
TOP
CONTROL ASSY
VR7650
K7502
TP7651
K7503
L7650
(VCO)
TP7655
ANALOG VIDEO ASSY
IC2801
TOP
VR2803
1011
(HBLK)
VR2802
20
(VBLK)
1
DIGITAL VIDEO ASSY
K6101 (R)
K6123
(AGND)
K6102 (G)
K6103 (B)
TOP
VR6551
(XSUS-U)
VR6553
(XSUS-D)
S6603
DIP SW
(PULSE SELECT)
VR6554
(YSUS-D)
VR6552
(YSUS-U)
150
Page 91
PDP-V402
TP3301
(VSUS)
R3863
Note: Do not adjust the shaded CR3101, VR3201,
VR3501, and VR3801 as they have already
been adjusted.
TP3302
(SUS. GND)
VR3301
(VSUS)
R3860
VR3801
(VSUS UVP)
TP3101
(+B)
TP3102
(P. GND)
VR3401
(VADR)
TP3401
(VADR)
TOP
TP3402
(ADR. GND)
TP3202
(D. GND)
VR3201
(VCC 5V)
VR3101
(+B 215V)
TP3201
(VCC+5V)
VR3601
(VOFS)
VR3501
(STB 5V)
MAIN POWER ASSY
TP3602
(OFS. GND)
TP3601
(VOFS)
TP3501
(STB+5V)
TP3503
(STB. GND)
X DRIVE ASSY
TP4027
(P. SUS)
TOP
TP4021
(VRN)
TP4022
(RNGND)
VR4002
Y DRIVE ASSY
TP5035
(VHY)
VR5002
TP5034
(GNDH)
TOP
TP5004
(P. SUS)
TP4012
(P. SUS)
TP5002
(P. SUS)
151
Page 92
PDP-V402
7. GENERAL INFORMATION
7.1 DIAGNOSIS
7.1.1 BURN-IN PROBLEM
Definition of burn-in
One dot consists of red (R), green (G), and blue (B) phosphors on
plasma display as on CRT. The luminance of each phosphor
deteriorates depending on the cumulative light emission time. The
unbalance of deterioration among the phosphors causes burn-in.
7 Tendency and Comparison of Burn-In
Tendency of burn-in
On our plasma display, the blue phosphor deteriorates comparatively
earlier than the other two types of phosphors. A burnt area tends to
be yellow.
Comparison with PTV
The tendency of burn-in can be compared between PDP-V402 and
PTV as follows:
¶A burnt area tends to be yellow in PDP-V402 and PTV.
¶PDP-V402 shows a lower level of burn-in (inconspicuous) than
PTV at high-intensity display.
¶At low-level display, however, burn-in is slightly more
conspicuous on PDP-V402 than on PTV.
¶Despite the differences of tendency, the level of burn-in is about
equal between PDP-V402 and PTV.
7 Prevention or Easing of Burn-In
1. For static display, it is recommended to give priority to red and
green. Avoid static display that partially contains blue peaks.
2. Avoid keeping static display for a long time. Switch static and
dynamic displays as frequently as possible.
3. After static display, use dynamic display three to five times
longer than the static image display.
4. When using static display, vary the pattern to avoid burn-in.
5. For static display, use a screen saver not to keep the same pattern
for a long.
6. When using static display for a long time, set the white balance
as close to yellow as possible (minimize the blue level) in
integrator mode to make burn-in inconspicuous.
7 Panel Burn-In Easing Method
PDP-V402 supports full-frame output in integrator mode.
When an image is burnt on the panel, full-frame output for
considerably long time may ease burn-in.
Full-frame Output Procedure
1. Press the MENU button then the STANDBY/ON button to start
up the device in integrator mode.
128
128
128
128
128
OFF
BLACK
ON
12345
± or ≠ key.
1
2. Select "ADDITIONAL SETUP" using the
P I CTURE PARAMETER
CONTRAST
I
GHT.
BR
COLOR
TINT
SHARPNESS
POSITION
I N I
T.
WHITE BALANCE
ADDITIONAL SET UP
TOTAL INITIALIZE
(The above menu is when NTSC is
input to the VIDEO function.)
3. Select "FULL MASK" using the ± or ≠ key and press the SET
key.
P I CTURE PARAMETER
WHITE BALANCE
ADDITIONAL SET UP
COLOR MODE
BAUD RATE
AUTO RGB2
NTSC MASK
FULL MASK
OSD
HOUR METER
TOTAL INITIALIZE
4800BPS
4. Select "WHITE" using the ± or ≠ key and press the SET key.
Then the display immediately changes to the full-color mask
screen.
Afterimage
PDP is also subject to the problem of afterimage whose symptoms
are close to those of burn-in. Afterimage is a phenomenon of a
residual static pattern that occurs if the display changes from a longtime static image of a high intensity level to a low-intensity image.
Displaying a dynamic image for some time clears this phenomenon.
152
FULL MASK
EXIT
RED
GREEN
BLUE
YELLOW
MAGENTA
CYAN
WHITE
Note:OSD display is disabled during full-frame output. Turn the
power off using the STANDBY/ON key or press the SET
key to clear the screen.
Page 93
7 RS-232C Adjustment Mode
Through the unit’s RS-232C port, you can use a PC to make various
adjustments and settings.
PDP-V402
5) Connection
COMPUTER (PC-98)PLASMA DISPLAY
About the RS-232C adjustment mode
1) Data Adjusted in RS-232C Adjustment Mode
• This data is written to the same memory area allocated for
Integrator mode.
2) Notes
(1) Adjustments are saved to last memory with the <AJN> command.
You must execute this command when adjustments are complete.
(2) Some RS-232C commands can be used in Normal operating
mode. Refer to “List of RS-232C Commands” in technical
manual for PDP-V402.
(3)If the conditions described in “Last Memory” are all met,
adjustment data and set items are stored in last memory, except
when:
• <IN 1-4>(input switching) is used in Normal operating mode.
• <AJY>(transition to RS-232C adjustment mode) is used
in Normal operating mode.
(4) About <DIN> (OSD displays disabled) and <DIY> (OSD
displays enabled)
Whether in <DIN> or <DIY> state, the following are shown:
• Menu screen
• “KEY LOCK” display
(5) The RS-232C adjustment mode is automatically released under
the following circuunsfances:
• The KEY LOCK/UNLOCK button is pressed.
RXD 32 TXD
TXD 23 RXD
CTS 58 RTS
GND 75 GND
COMPUTER (IBM PC)PLASMA DISPLAY
RXD 22 TXD
TXD 33 RXD
CTS 88 RTS
GND 55 GND
* D-sub 9Pin-D-sub 25Pin conversion cables
are now available on the market.
STX COMMAND COMMAND COMMAND ETX
Up to three commands can beissued simultaneously.
(3) When transmitting direct numeric commands
Note)
Interface
1) Connector D-sub 9 pins
2) Pin Assignment
PIN NO.SymbolSignal NAME
2TXDTransmitted Data
3RXDRecieved Data
8RTSRequest To Send
5GNDSignal Ground
3) Baud Rate
4800 bps (switchable to 1200, 2400, 9600, 19200 bps)
NOTE: Set the unit baud rate to match that of the PC in use. With
long RS-232C cables, we recommend using lower baud rates.
4) Data Format
Start: 1-bit
Data: 8-bit
Parity: 0 (no parity)
Stop: 1-bit
STX COMMAND ARGUMENT ETX
ARGUMENT: 3-Byte(ASCII)
Note)
Transmit PON and POF commands one by one. (Allow an interval
of three or more seconds between commands.)
Transmit an input switching command (IN 1-4) and <AJY>
command, allowing sufficient time between them. (Allow an interval
of approximately three or more seconds between input switching
commands (IN 1-4).)
Error Example 1)STXPON AJYCNT ETX
Error Example 2) STXPOF PON ETX
Error Example 3) STXIN2AJYCNT ETX
Full-frame Output Procedure From a personal
computer:
AJY [Enter]
FMY [Enter]
When a personal computer is used, the setting is stored in memory
and not cleared until the same operation (AJY [Enter], FMY
[Enter]) is done next time.
153
Page 94
PDP-V402
7.1.2 TROUBLESHOOTING
1. MAIN POWER ASSY
Check the power supply voltages.
Measurement Points
VADR (60V) (TP3401) –– ADR. GND (TP3402)If normal, LED (D3405) lights.
VSUS (170V) (TP3301) –– SUS. GND (TP3302)If normal, LED (D3305) lights. (which displays the timing of VCC and VSUS)
POWER ON: lights in red (VCC ON) = lights in yellow (VSUS ON) at 1–2sec
POWER OFF: lights in yellow = lights in red at 1–2sec = LED OFF
(VSUS OFF earlier than VCC OFF)
abnormal POWER OFF: lights in yellow = lights in green = LED OFF
(VCC OFF earlier than VSUS OFF)
VOFS (140V) (TP3601) –– OFS.GND (TP3602)
+B (215V) (TP3101) –– P. GND (TP3102)
VCP (12V) (TP3203) –– CP. GND (TP3204)
+13.5V (TP3205) –– A. GND (TP3206)
VCC (5V) (TP3201) –– D. GND (TP3202)If normal, LED (D3205) lights.
2. SUB POWER ASSY
Check the power supply voltages.
VCSP (40V) ..... TP1603CSP. GND........... TP1604
+12V – YVSUS/2SP2 = Y DRIVE (A) ASSY
+12V – XVSUS/2SP2 = X DRIVE (A) ASSY
+12.5V – GNDSP3 = CONTROL ASSY
+12.5V – GNDSP5 = ANALOG VIDEO ASSY
+12.5V – GNDSP6 = INPUT CONTROL ASSY
Note: Take note that the CSP. GND differs from the GND
potential of the unit.
[Precautions for servicing]
1. As the P.D. circuit starts operating when the rear cover is
removed and the CN5801 connector of the FAN RELAY
ASSY is disconnected, short between TP3802 and TP3803.
2. For normal signals, set the rear selection SW S1201 (INPUT
CONTROL ASSY) to OFF. When G on sync signals are
output by Mac, set the switch to ON to prevent overlapping
of the sync. signal.
154
TP3301
(VSUS)
TP3302
(SUS. GND)
D3305
TP3101
(+B)
TP3102
(P. GND)
TOP
TP3205
(+13.5V)
TP3401
(VADR)
D3405
TP3202
(D. GND)
TP3206
(A. GND)
TP3402
(ADR. GND)
TP3201
(VCC+5V)
TP3803
D3205
TP3204
(CP. GND)
MAIN POWER ASSY
FAN P. D.
TP3802
TP3203
(VCP)
TP3602
(OFS. GND)
TP3601
(VOFS)
TP1603
(+40V)
SP3
SP5
SP6
SUB POWER ASSY
SP2
TP1604
(CSP. GND)
Page 95
3. DIGITAL VIDEO ASSY
Check the following points.
1) Input RGB signal
R signalK6101
V: 0.5 V/div. H: 20 µsec/div.
PDP-V402
3) Clock signal
IC6201PD4800A CLK21 K6004
V: 2 V/div. H: 20 nsec/div.
G signalK6102
V: 0.5 V/div. H: 20 µsec/div.
B signalK6103
V: 0.5 V/div. H: 20 µsec/div.
LED D6502 (NTSC): Lit during NTSC input and off
during PC input
2) Input sync signal HD, VD, and REF H
1 HDK6020
2 REF HK6006
V: 2 V/div. H: 20 µsec/div.
1
4) Address waveform
UADR5R6251
1 VD IN
2 UADR5
V: 2 V/div. H: 2 msec/div.
1
2
5) Drive waveform
YBYPASSR6562
1 VD IN
2 YBYPASS0
V: 2 V/div. H: 2 msec/div.
1
2
LED D6503 (OUTPUT): Lit when sustain output is normal,
and off when abnormal
2
VDK6005
V: 2 V/div. H: 5 msec/div.
155
Page 96
PDP-V402
DIGITAL VIDEO ASSY
K6101 (R)
K6102 (G)
K6103 (B)
K6020
(HD)
K6004
(CKL2I)
TOP
R6252
R6251
K6005
(VD)
4. POWER OFF CIRCUIT FOR PROTECTION
This unit is provided with various protection circuits. When
these protection circuits operate, the P.D. (Power Down) operates
to turn OFF the relay (RY3001) and turn OFF the power of the
unit. When P.D. operates, the power goes off after the LED
(D3807) emits light.
1) Power supply PD circuit
Over-voltage protection circuit (O.V.P.)
Detects the overvoltage of the power supplies B (TP3101:
215V), VSUS (TP3301: 170V), VADR (TP3401: 60V),
VCC (TP3201: 5V), VCSP (40V) and operates P.D.
Voltage drop protection circuit (U.V.P.)
Detects the voltage drop by the overload of the power
supplies VSUS (170V), VADR (60V), VCP (12V),
+13.5V, and VCC (5V) and operates P.D.
Overvoltage input protection circuit
When voltage above approximately 200V is input to the
AC power input, it operates P.D.
D6502
D6503
4) DRIVE ASSY overcurrent protection circuit
Detects the overcurrent of the VCP (12V) supplied to the
X DRIVE (A)/(B) ASSY and Y DRIVE (A)/(B) ASSY,
and operates P.D.
Detects overcurrent flowing to R5032 (390 W, 3W) in the
Y DRIVE (A) ASSY and Y DRIVE (B) ASSY, and
operates P.D.
5) FAN stop protection circuit
Operates P.D. when the internal fan stops.
Does not operate when the external fan stops.
6) Temperature detection protection circuit
Operates P.D. when the external temperature exceeds
approximately 55 ˚C.
The STANDBY/ON indicator blinks in green only when this
detection circuit is working.
2) DRIVE ASSY overvoltage protection circuit
Operates P.D. when the DC-DC CONV. output (VRN, VH)
in the X DRIVE (A) ASSY, Y DRIVE (A) ASSY becomes
overvoltage.
3) DRIVE ASSY undervoltage protection circuit
Operates P.D. when the DC-DC CONV. output (VH) in the
Y DRIVE (A) ASSY becomes undervoltage.
156
Page 97
7.1.3 DISASSEMBLY
PDP-V402
Rear Cover Section
1. Remove the screw 1 tightening the FAN RELAY ASSY.
2. Disconnect the connector 2 from the FAN RELAY ASSY.
3. Remove the fourteen hole rivets 3 and twenty-four screws 4,
and remove the rear cover from the front case.
3
4
4
4
4
3
Note:
When opening the rear cover, open the PCB cover at the bottom
of the rear fan, disconnect the connector CN58012 of the FAN
RELAY ASSY, and then open the rear cover. Opening it
directly may break the wire.
As the P.D. circuit starts operating when CN5801 is removed,
short between TP3802 and TP3803 using a alligator clip to stop
the P.D. circuit operation.
3
4
3
4
4
4
4
1
3
2
TP3803
CN5801
TP3802
157
Page 98
PDP-V402
Chassis Section
1. Remove the three screws 5 tightening the INLET PANEL.
2. Remove the INPUT CONTROL ASSY from the PCB spacer 6.
3. Move the whole INPUT CONTROL ASSY to move INLET PANEL to the
position where the screws 7 fixing the chassis can be removed.
4. Remove the four front shield 8.
5. Remove the twenty-two screws 7 fixing the chassis.
6. Pull out the chassis block (chassis, panel, PCB ASSY) from the front case.
5
×3
INPUT CONTROL ASSY
×6
7
×5
7
7
×6
6
PCB
Spacer
7
×5
6
PCB
Spacer
158
Front Shield
8
Page 99
×3
×3
×2
×2
×2
×3
×3
18
Angle B
Angle B
Assy
Angle D
Angle D
Shield
Sheet
PCB Angle A
PCB
Angle B
ANALOG VIDEO
Assy
3D Y/C
Assy
CONTROL
Assy
Rivet
FPC Shield H
(× 5)
FPC Shield H
(× 5)
16
17
15
15
18
13
14
12
9
10
11
×2
×2
17
15
Corner
Angle
Corner Angle
Corner
Angle
Corner
Angle
PCB
Spacer
PCB
Spacer
PCB
Spacer
15
16
Panel Assy Section (1/2)
1. Remove a screw 9 tightening the CONTROL ASSY, and remove the CONTROL ASSY from the PCB Spacer.
2. Remove the two screws 0 tightening the ANALOG VIDEO ASSY, and remove the ANALOG VIDEO ASSY
from the PCB Spacer.
3. Remove the two screws - tightening the 3D Y/C ASSY, and remove the 3D Y/C ASSY from the PCB Spacer.
4. Remove parts = to % attached to the external circumference of the chassis.
PDP-V402
159
Page 100
PDP-V402
Panel Assy Section (2/2)
1. Remove all parts other than the panel Assy.
Note: Assemble all removed parts in the reverse order of disassembly.
SUB POWER
ASSY
DIGITAL VIDEO
ASSY
X DRIVE (A)
ASSY
PAL PDP
SWITCHING
POWER SUPPLY
X DRIVE (B)
ASSY
Y DRIVE (A)
ASSY
Y DRIVE (B)
ASSY
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