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SERVICE MANUAL
PLASMA WIDE TELEVISION
AV42PD20ES
Supplementary
BASIC CHASSIS
MF
This model corresponded to the printed circuit board exchange in the PDP unit. Therefore, this service manual describes only the information relevant to it. For details other than those described in this manual, please refer to the AV42PD20ES service manual (No.51955 2002/04).
TABLE OF CONTENTS
1. 2. 3. 4. 5. 6. 7. CONFIRMING THE MODEL NAME, SERIAL NUMBER, ID NUMBER AND CODE NUMBER MAIN PARTS LOCATION INSPECTION OF COMPONENTS ON THE PW BOARD DISASSEMBLY PROCEDURE CONFIRMING REFERENCE VOLTAGE ADJUSTMENTS PARTS LIST 2 2 3 7 9 10 11
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.
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.51955B 2004/8
CONFIRMING 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. 001200456 Vd=70V Vs=182.1V CODE AA-01
For example CODE : AA
PANEL ID No. 212912220251 (12 figures)
MAIN PARTS LOCATION
Scan IC A Flexible cable Common-side A Flexible cable Scan-side A Scan IC B Flexible cable Common-side B RECOVERY RELAY PWB COMMON PWB DIGITAL PWB SCAN PWB Flexible cable Scan-side C Scan IC C SIGNAL RELAY PWB (left) SIGNAL RELAY PWB (right) Flexible cable Scan-side D Scan IC D Heat-sink Flexible cable Scan-side B
Flexible cable Common-side C
2(No.51955B)
INSPECTION 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 (F1, F2) on the COMMON PWB 1.2 Glass fuses (F1, F2) on the SCAN PWB
F1
F1
OK: Short NG: Open OK: Short NG: Open
F2
F2
1.3 Fuse resistance (R101) on the COMMON PWB
1.4 Fuse resistances (R12, R29) on the SCAN PWB
R101
R101 OK: Approx. 2.2 NG: Open
R12 R29
R12 OK: Approx. 2.2 NG: Open R29 OK: Approx. 4.7 NG: Open
2. INSPECTION OF ALARM LINES According to the following procedures, measure with a circuit tester and check OK or NG.
2.1 The conduction between the pin 50 of the connector [CN8] and GND on the SIGNAL RELAY PWB (right) 2.2 The conduction between the pins of the connector [CN3] on the SCAN PWB
OK: Short NG: Open
GND
OK: Short NG: Open
(No.51955B)3
3. INSPECTION OF DATA ICS According to the following procedures, measure with a circuit tester and check OK or NG.
3.1 The conduction between the fuse [F2] and GND on the COMMON PWB
3.2 The conduction between the fuse [F2] and GND on the SCAN PWB
F2
OK: Open NG: Short
OK: Open NG: Short
F2
Check the conduction between the fuse [F2] and the ground on the COMMON PWB or SCAN PWB. In case of "short", one of the data ICs connecting the SIGNAL RELAY PWB 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.
4. INSPECTION OF POWER ICS According to the following procedures, measure with a circuit tester and check OK or NG.
The allocation of power ICs to be checked is shown below.
COMMON PWB
SCAN PWB
PH2101
PH2101
PH2102
4(No.51955B)
4.1 PH2101 on the COMMON PWB Check each point of power IC as shown below.
A G H PH2101
B
PH2101
C
D E
F
Check point
Between A-G B-H C-D E-F
OK: Over 1k NG: Short
4.2 PH2101 on the SCAN PWB Check each point of power IC as shown below.
A G H PH2101
B
PH2101
C
D E
F
Check point
Between A-G B-H C-D E-F
OK: Over 1k NG: Short
(No.51955B)5
4.3 PH2102 on the SCAN PWB Check each point of power IC as shown below.
A B PH2102 C D E F G H I J K
PH2102
Check point
Between A-B B-C D-E
Between F-G H-I J-K
OK: Over 1k NG: Short
5. INSPECTION OF SCAN IC DRIVERS According to the following procedures, measure with a circuit tester and check OK or NG.
Scan IC drivers [A-D] Check point
Between NEGA - POSI
NEGA
NEGA
POSI
POSI
OK: Over 1k NG: Short
Scan IC
6(No.51955B)
DISASSEMBLY PROCEDURE
[DISPLAY BLOCK]
1. Removing the AUDIO AMP MODULE (1) Remove the 2 screws [A]. (2) Remove the 2 screws [B]. (3) Remove the AUDIO AMP MODULE. 2. Removing the POWER UNIT (1) Remove the 6 screws [C]. (2) Remove the POWER UNIT. 3. Removing the SHIELD COVER (1) Remove the 9 screws [D]. (2) Remove the SHIELD COVER. 4. Removing the TERMINAL PANEL (1) Remove the 2 screws [E]. (2) Remove the TERMINAL PANEL.
POWER UNIT
AUDIO AMP MODULE
SHIELD COVER TERMINAL PANEL
C
B
A
D
E
5. Removing the DSP PWB (1) Remove the 2 screws [F]. (2) Remove the DSP PWB.
SENSOR PWB(1)
I
SENSOR PWB(2) MAIN PWB
J
6. Removing the MAIN PWB Remove the SHIELD COVER. Remove the TERMINAL PANEL. (1) Remove the 4 screws [G]. (2) Remove the 2 screws [H]. (3) Remove the MAIN PWB. 7. Removing the SENSOR PWB(1) (1) Remove the 1 screw [I]. (2) Remove the SENSOR PWB(1). 8. Removing the SENSOR PWB(2) (1) Remove the 1 screw [J]. (2) Remove the SENSOR PWB(2). NOTE : SENSOR PWB(1) and SENSOR PWB (2) are included in MAIN PWB.
SUB PWB
G F
G K L
DVI CONNECTOR DSP PWB
9. Removing the SUB PWB (1) Remove the 2 screws [K]. (2) Remove the 1 screws [L]. (3) Remove the SUB PWB.
H
Notes : 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 r, and confirm it locks completely.
(No.51955B)7
[PDP(PANEL) BLOCK]
1. Removing the COMMON PWB (1) Detach the 6 connectors. (2) Remove the 7 screws [A]. (3) Remove the COMMON PWB. 2. Removing the DIGITAL PWB (1) Detach the 5 connectors. (2) Remove the 6 screws [B]. (3) Remove the DIGITAL PWB. 3. Removing the SCAN PWB (1) Detach the 9 connectors. (2) Remove the 6 screws [C]. (3) Remove the SCAN PWB. 4. Removing the SIGNAL RELAY PWB (left) (1) Detach the 9 connectors. (2) Remove the SIGNAL RELAY PWB (left). 5. Removing the SIGNAL RELAY PWB (right) (1) Detach the 10 connectors. (2) Remove the SIGNAL RELAY PWB (right).
A
B
C
SCAN PWB COMMON PWB DIGITAL PWB
SIGNAL RELAY PWB (left)
SIGNAL RELAY PWB (right)
: Connector
Notes : 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.
8(No.51955B)
CONFIRMING 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 unit 1.1 Access the following address by the Web browser of your PC. http://203.126.119.92/necpd/ 1.2 After [NEC-ITLS] screen is displayed, click "Click here to log on to NPD". (Fig. 1) 1.3 Type the following user name and password into the dialog box and click "Enter" button. (Fig. 2) Username: JVCJPN01 Password: jvckoseki (lower-case) 1.4 After [WELCOME TO NEC-ITLS] is displayed (Fig. 3), click the "Voltage" icon in the "Enquiry" holder on the upper left part of the window. (Fig. 4) 1.5 After [VOLTAGE ENQUIRY] is displayed (Fig. 5), enter the panel ID number, which is shown on the panel (refer to page 2), into the dialog box and click "GO". 1.6 Then, the characteristic voltage value will be displayed. (Fig. 6) Fig. 2
Fig. 1
Fig. 3 Fig. 5
Fig. 6
Fig. 4
(No.51955B)9
ADJUSTMENTS
Item Vsw VOLTAGE ADJUSTMENT Measuring instrument DC voltmeter Test point TP7 GND [COMMON PWB] Adjustment part VR101 [COMMON PWB] Description (1 ) Measur e th e voltag e betwee n TP 7 an d GND on the COMMON PWB. (2) Adjus t the voltag e same as the referenc e data of Vsw shown in web site by VR101. The adjustment accuracy is within 0.5V.
TP7(Vsw)
VR101
Vbw / Vp+ VOLTAGE ADJUSTMENT
DC voltmeter
TP32 (Vp+) TP34 (Vbw) GND [SCAN PWB]
VR1 (Vp+) VR2 (Vbw) [SCAN PWB]
(1) Measur e the voltag e betwee n TP3 4 and GND on the SCAN PWB. (2) Adjus t the voltag e same as the referenc e data of Vbw shown in web site by VR2. The adjustment accuracy is within 0.5V. (3) Measur e the voltag e betwee n TP3 2 and GND on the SCAN PWB. (4) Adjus t the voltag e same as the referenc e data of Vp+ shown in web site by VR1. The adjustment accuracy is within 1.5V.
VR2 (Vbw)
TP34 (Vbw)
VR1 (Vp+)
TP32 (Vp+)
10(No.51955B)
PARTS LIST
[ DISPLAY BLOCK ]
4 PDP UNIT
1
3
5
2
Ref No. 1 2 3 4 5
Parts No. N-093-6K-6M01 N-093-6G-5D01 N-03S-13-0231 N-03S-11-0034 N-093-6K-6S91
Parts name MAIN PWB DSP PWB AUDIO AMP MODULE POWER UNIT SUB PWB
Description
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.
(No.51955B)11
[ PDP(PANEL) UNIT ] 7 PDP UNIT 8 11 6
10
Ref No. 6 7 8 9 10 Parts No. NE-9S899447 NE-9S899448 NE-9S899592 NE-9S899037 NE-9S899036 NE-9S899033 11 NE-9S899034 NE-9S899035 NOTE : Version is indicated by the seal stuck on each PW board. DIGITAL PWB Parts name SCAN PWB COMMON PWB RECOVERY RELAY PWB SIGNAL RELAY PWB SIGNAL RELAY PWB
9
Latest version 01K 01G 02B 01A 01A 02A-14 02A-15 02A-16 01A FK2600686 (right) (left) 01A-05, 01A-11 01A-06, 01A-12 01A-07, 01A-13
Indication of Version
Compatible version
The written example of the seal on a PWB
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.
Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.51955B)
Printed in Japan WPC