Page 1
SERVICE MANUAL
PDP COLOUR TELEVISION
BASIC CHASSIS
PD-35DX
Supplementary
These models corresponded to the printed circuit board exchange in the PDP panel.
Therefore, this service manual describes only the information relevant to it.
For detail s other than thos e describe d in this manual , pleas e refer to the PD-35DX
service manual (No.52089 2003/03).
TABLE OF CONTENTS
1. CONFIRMING THE MODEL NAME, SERIAL NUMBER, ID NUMBER AND CODE NUMBER
2. MAIN PARTS LOCATION
3. INSPECTION OF COMPONENTS ON THE PW BOARD
4. DISASSEMBLY PROCEDURE
5. CONFIRMING REFERENCE VOLTAGE
6. ADJUSTMENTS
7. PARTS LIST
㨯
MK
2
2
3
6
8
9
10
NOTES AT THE TIME OF PW BOARD EXCHANGE
It will become the cause of failure if dust adheres to the inside of a connector, or a flat wire and
a point-of-contact part.
When the PW board is exchanged , be carefu l of the dust and dirt of the inside of a connecto r,
or a flat wire and a point-of-contact part enough.
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.52089B
2004/6
Page 2
عCONFIRMING MODEL NAME, SERIAL NUMBER, ID NUMBER AND CODE NUMBER
NOTE : The panel's ID number is used when you reference the characteristic voltage value of the panel
on web site.
Voltage and CODE No.
SERIAL NO.
301201327
Vd=60V
Vs=180V
CODE AA-01
For example
CODE : AA
Model name and serial No.
NEC NP35B2MF01AA
301201327
*********************
*********************
*********************
For example
Model : NP35B2MF01AA
Serial No. : 301201327 (9 figures)
عMAIN PARTS LOCATION
COMMON PWB
Flexible cable
Common-side A
Flexible cable
Common-side B
COMMON BRANCH PWB
SCAN RELAY PWB
HIGH VOLTAGE
PWB
PANEL ID No.
222212260043
(12 figures)
Flexible cable
Scan-side A
Flexible cable
Scan-side B
Flexible cable
Common-side C
2(No.52089B)
DIGITAL PWB
SIGNAL RELAY PWB (left) SIGNAL RELAY PWB (right)
Heat-sink
ABCDE F GHI
Flexible cable
Scan-side C
Flexible cable
Scan-side D
J
Page 3
عINSPECTION OF COMPONENTS ON THE PW BOARD
Diagnose the PW board in PDP unit by checking defects based on the following items.
1. Inspection of fuses
Measure the resistance of each fuse with a circuit tester, and check OK or NG.
1.1 Glass fuses (F301, F307) on the HIGH VOLTAGE PWB 1.2 Chip fuse (FU701) on the DIGITAL PWB
㨀㧼
㧲
㧲
1.3 Fuse resistances (R10, R4, R6) and chip fuse (R20)
on the HIGH VOLTAGE PWB
OK: Short
NG: Open
In case of F303, check
between the pin 6 (or
pin 7) of CN303 and
TP307.
R10
OK: Approx. 2.2ǡ
NG: Open
R4
R10
R6
R4
OK: Approx. 2.2ǡ
NG: Open
R6
OK: Approx. 2.2ǡ
R20
NG: Open
R20
OK: Approx. 10ǡ
NG: Open
㧲㨁
OK: Short
NG: Open
1.4 Fuse resistance (R7) and chip fuse (R9) on the
HIGH VOLTAGE PWB
R7
R7
OK: Approx. 2.2ǡ
NG: Open
R9
R9
OK: Approx. 10ǡ
NG: Open
R1
R1
OK: Approx. 2.2ǡ
NG: Open
1.6 Fuse resistances (R2, R3) on the HIGH VOLTAGE PWB1.5 Fuse resistance (R1) on the HIGH VOLTAGE PWB
R3
R2
OK: Approx. 2.2ǡ
NG: Open
R3
OK: Approx. 2.2ǡ
R2
NG: Open
(No.52089B)3
Page 4
2. Inspection of data ICs
According to the following procedures, measure with a circuit tester and check OK or NG.
Check the pin 5 or pin 6 of the connector [CN11] on the SIGNAL RELAY PWB (right).
OK: Open
NG: Short
Detach the connector [CN11] on the SIGNAL RELAY PWB (right) and check the conduction between the pin 5 (or
pin 6) and the ground.
In case of "short", one of the data ICs connecting the signal relay board may be defective, and you should check
whether there is any trace of damage on the data IC's surface after removing the heat-sink on the data IC.
3. Inspection of power IC
According to the following procedures, measure with a circuit tester and check OK or NG.
The allocation of power IC to be checked is shown below.
HIGH VOLTAGE PWB
PH2201N
4(No.52089B)
Page 5
3.1 PH2201N on the HIGH VOLTAGE PWB
Turn over the board and check each point of power IC as shown below.
R
Q
P
PH2201N
A
B
C
D
E
F
G
H
I
J
K
L
M
N
Check point
Between
A - B
A - R
B - C
B - H
B - J
B - K
Between
C - J
E - F
F - G
F - R
G - L
H - Q
Between
I - J
I - Q
M - Q
N - Q
O - Q
OK: Over 1kǡ
NG: Short
R
A
B
C
D
E
F
G
PH2201N
H
I
J
K
L
Q
M
N
P
O
4. Inspection of scan IC drivers
According to the following procedures, measure with a circuit tester and check OK or NG.
4.1 Scan IC driver on the SCAN RELAY PWB
NEGA
Check point
Between NEGA - POSI
POSI
OK: Over 1kǡ
NG: Short
NEGA
(No.52089B)5
Page 6
عDISASSEMBLY PROCEDURE
1. Removing the COMMON PWB
(1) Detach the 3 connectors.
(2) Remove the 8 screws [A].
(3) Remove the COMMON PWB.
(1) Detach the 8 connectors.
(2) Remove the 5 screws [D].
(3) Remove the SIGNAL RELAY PWB (left).
2. Removing the DIGITAL PWB
(1) Detach the 4 connectors.
(2) Remove the 6 screws [B].
(3) Remove the DIGITAL PWB.
3. Removing the HIGH VOLTAGE PWB
(1) Detach the 3 connectors.
(2) Remove the 22 screws [C].
(3) Remove the HIGH VOLTAGE PWB.
4. Removing the SIGNAL RELAY PWB (left)
Note : Removing the heat-sink in advance
is required. Refer to the following page
to remove the heat-sink.
COMMON PWB
A
COMMON BRANCH PWB
5. Removing the SIGNAL RELAY PWB (right)
(1) Detach the 8 connectors.
(2) Remove the 4 screws [E].
(3) Remove the SIGNAL RELAY PWB (right).
6. Removing the SCAN RELAY PWB
(1) Detach the 5 connectors.
(2) Remove the 10 screws [F].
(3) Remove the SCAN RELAY PWB.
C
SCAN RELAY PWB
F
B
DIGITAL PWB
E
D
: connector
SIGNAL RELAY PWB (left)
Note : Check the state of the detached cables and connectors.
(1) Check any dirt or peeling in the contact part of the flat cable, and any crack, crease, disconnection
and short-circuit of wires.
(2) Check any foreign substance in the connector's contact .
(3) Check the state of plugging the flat cable into the connector, and confirm it locks completely.
HIGH VOLTAGE
PWB
Heat-sink
SIGNAL RELAY PWB (right)
G
6(No.52089B)
Page 7
heat-sink
silicone and PC
appearance of
separation jig
separation jig
TCP
REMOVING THE HEAT SINK
(1) Remove the 7 screws [G] shown in the previou s
ޓ page.
(2) With a hot air blower, carry out eliminary heating
ޓof the whole heat - sink . Th e temperatur e of the
ޓheat-sin k an d surroundin g part s shoul d no t
ޓexceed 100 .
(3) Remove the heat-sink from TCP by inserting the
ޓseparatio n ji g in the crevic e betwee n the heat -
ޓsin k an d TC P, heatin g the heat-sin k with a ho t
ޓair blower sequentially from an end.
hot air blower
Fig.1
Fig.2
separation jig
(4) Inser t the separatio n jig sequentiall y fro m an
ޓend of the heat-sink and separate it.
Note :
(1) The silicone sheet is stuck on the back of the
ޓheat-sink , an d if yo u tea r it o f f forcibl y,
ޓdamaging the data TCP tips may becaused.
(2) Do not give stres s to the fin of the heat-sin k
ޓand data TCP.
(3) Th e heat-sin k canno t be re-used , when the
ޓsilicon e (gra y color ) o f th e heat-sin k i s
ޓdamage d and PC (phas e chang e : white) is
ޓexposed.
Fig.3
(No.52089B)7
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عCONFIRMING REFERENCE VOLTAGE
Each PDP panel has the characteristic voltage value.
In the adjustment after fix or exchange of a PW board,
this voltage value is used as reference.
You can get it from the vendor's web site on the Internet.
1. Getting the characteristic voltage value of the PDP panel
1.1 Access the following address by the Web browser of
ޓޓyour PC.
http://203.126.119.92/necpd/
1.2 After [NEC-ITLS] screen is displayed, click "Click here
ޓޓto log on to NPD". (Fig. 1)
1.3 Type the following user name and password into the
ޓޓdialog box and click "Enter" button. (Fig. 2)
Username: JVCJPN01
Password: jvckoseki (lower-case)
1.4 After [WELCOME TO NEC-ITLS] is displayed (Fig. 3),
ޓޓclick the "Voltage" icon in the "Enquiry" holder on the
ޓޓupper left part of the window. (Fig. 4)
1.5 After [VOLTAGE ENQUIRY] is displayed (Fig. 5), enter
ޓޓthe panel ID number, which is shown on the panel (refer
ޓޓto page 2), into the dialog box and click "GO".
Fig. 1
1.6 Then, the characteristic voltage value will be displayed.
(Fig. 6)
Fig. 5
Fig. 2
Fig. 3
8(No.52089B)
Fig. 6
Fig. 4
Page 9
عADJUSTMENTS
Item
Vbw / -Vw
VOLTAGE
ADJUSTMENT
Measuring
instrument
Test point Adjustment part Description
DC voltmeter TP (Vbw)
TP (-Vw)
GND
[HIGH VOLTAGE
PWB]
VR4(-Vw)
VR3 (Vbw)
VR4 (-Vw)
[HIGH VOLTAGE
PWB]
(1) Measure the voltage between TP(-Vw) and
ޓTP(Vbw) on the HIGH VOLTAGE PWB.
(2) Adjus t the voltag e same as the referenc e
ޓdata of Vbw shown in web site by VR3.
The adjustment accuracy is within r0.5V.
(3) Measure the voltage between TP(-Vw) and
ޓGND on the HIGH VOLTAGE PWB.
(4) Adjus t the voltag e same as the referenc e
ޓdata of -Vw shown in web site by VR4.
The adjustment accuracy is within r0.5V.
Vsw / Vp
VOLTAGE
ADJUSTMENT
TP(-Vw)
DC voltmeter TP (Vp)
TP (Vsw)
GND
[HIGH VOLTAGE
PWB]
VR2(Vsw)
VR1 (Vp)
VR2 (Vsw)
[HIGH VOLTAGE
PWB]
VR3 (Vbw)
TP(Vbw)
(1) Measure the voltage between TP(Vsw) and
ޓGND on the HIGH VOLTAGE PWB.
(2) Adjus t the voltag e same as the referenc e
ޓdata of Vsw shown in web site by VR2.
The adjustment accuracy is within r0.5V.
(3) Measur e the voltag e betwee n TP(Vp ) and
ޓGND on the HIGH VOLTAGE PWB.
(4) Adjus t the voltag e same as the referenc e
ޓdata of Vp shown in web site by VR1.
The adjustment accuracy is within r1.5V.
VR1 (Vp)
TP(Vp)
TP(Vsw)
(No.52089B)9
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عPARTS LIST
2
PDP UNIT
3
6
1
5
#$%&' ()*+
Heat-sink
5 6
NOTE(1)Please check a code number with the seal stuck on the rear side
of the PDP panel.
ޓޓޓ(2)Version is indicated by the seal stuck on each PW board.
ޓ
Ref No. Parts No. Parts name Description
1
2
3
4
5
6
7
CODE
AA, BA
AA, BA
AA, BA
AA, BA
AA, BA
AA, BA
AA
BA
Version
01E
01C
01A
01A
01B
01B
02E-10
01D-10
NE-9S899437
NE-9S899376
NE-9S899594
NE-9S899382
NE-9S899510
NE-9S899492
NE-9S899276
NE-9S899281
HIGH VOLTAGE PWB
SCAN RELAY PWB
COMMON BRANCH PWB
COMMON PWB
SIGNAL RELAY PWB
SIGNAL RELAY PWB
DIGITAL PWB
,
(left
(right)
01A
FK2600686
The written example of
the seal on a PWB
Indication of Version
10(No.52089B)
NOTES AT THE TIME OF PW BOARD EXCHANGE
It will become the cause of failure if dust adheres to the inside of a connector, or a flat wire and
a point-of-contact part.
When the PW board is exchanged, be careful of the dust and dirt of the inside of a connector, or
a flat wire and a point-of-contact part enough.
Page 11
(No.52089B)11
Page 12
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEG ORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.52089B)
Printed in Japan
WPC
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