Text preview for : GD-V4210PZWSML4.PDF part of JVC GD-V210 plasma service manual supplementary
Back to : GD-V4210PZWSML4.PDF | Home
Revised 29/9/2004 Web link on page 8 corrected.
SERVICE MANUAL
PLASMA DISPLAY MONITOR
GD-V4210PZW GD-V4210PZW-G GD-V4210PCE GD-V4211PCE
Supplementary
BASIC CHASSIS
P1
These models 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 GD-V4210PZW, GD-V4210PZW-G, GD-V4210PCE service manual (No.51767 2000/10) and GD-V4211PCE (No.51767B 2000/12).
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 8 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.51767D 2004/8
CONFIRMING 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. 001200456 Vd=70V Vs=182.1V CODE AA-01
For example CODE : AA
PANEL ID No. 212912220251
(12 figures) Model name and serial No.
NEC NP42B1MF03AA 001200456
********************** ********************** **********************
For example Model : NP42B1MF03AA Serial No. : 001200456 (9 figures)
MAIN PARTS LOCATION
Flexible cable Data-side Data IC SIGNAL RELAY PWB (upper left) A A B B C C D D E E SIGNAL RELAY PWB (upper right) F H G F G H I I Scan IC A Flexible cable Scan-side A
Flexible cable Common-side A RECOVERY RELAY PWB Flexible cable Common-side B COMMON PWB DIGITAL PWB SCAN PWB
Scan IC B Flexible cable Scan-side B
Scan IC C Flexible cable Common-side C Flexible cable Scan-side C
SIGNAL RELAY PWB (lower left) Data IC Flexible cable Data-side J J K K L L M M N N O P Q R R
Flexible cable Scan-side D Scan IC D
O P Q SIGNAL RELAY PWB (lower right)
2(No.51767D)
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
1
2
OK: Short NG: Open
F1
F2
OK: Short NG: Open
1.3 Fuse resistance (R101) on the COMMON PWB
1.4 Fuse resistance (R109) on the COMMON PWB
R101
R101 OK: Approx. 2 NG: Open
R109
R109 OK: Approx. 2 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 conductio n betwee n the pin 30 of the connecto r [CN4] and GND on the SIGNA L RELAY PWB (upper left) 2.2 The conductio n betwee n the pin 30 of the connecto r [CN5] and GND on the SIGNAL RELAY PWB (lower right)
GND
OK: Short NG: Open
OK: Short NG: Open
GND
2.3 The conduction between the pins of CN3 on the scan IC [A]
2.4 The conduction between the pins of CN3 on the scan IC [D]
OK: Short NG: Open
OK: Short NG: Open
(No.51767D)3
3. INSPECTION OF DATA ICS According to the following procedures, measure with a circuit tester and check OK or NG.
Check the pin 4 or pin 5 of the connector [CN8] on the SIGNAL RELAY PWB (lower left).
OK: Open NG: Short
Detac h the connecto r [CN8 ] or [CN9 ] on each of the SIGNA L REL AY PWB s (fo r exampl e : lowe r lef t board ) and chec k the conduction between the pin 4 (or pin 5) and the ground. In case of "short" , one of the data ICs connectin g the SIGNAL RELAY PWB may be defective, and you should check whether ther e is an y trac e of damag e on th e dat a IC' s surfac e afte r 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
PH2001
PH2001 PH2001
PH2003 PH2004
PH2001
PH2001
PH2002
PH2003 PH2001
4(No.51767D)
4.1 PH2001 on the COMMON PWB Check each point of power IC as shown below.
D PH2001 C PH2001 E
B
PH2001
A
Check point
Between A-B B-C D-E
OK: Over 1k NG: Short
4.2 PH2001 on the SCAN PWB Check each point of power IC as shown below.
PH2001 A
PH2001
PH2001
B
E
C D
Check point
Between A-B B-C D-E
OK: Over 1k NG: Short
(No.51767D)5
4.3 PH2002 on the SCAN PWB Check each point of power IC as shown below.
PH2002 PH2002
A
PH2002
B
Check point
Between A-B
OK: Over 1k NG: Short
4.4 PH2003 on the SCAN PWB Turn over the board and check each point of power IC as shown below.
A B PH2003 PH2003 C D
Check point
Between A-B C-D
OK: Over 1k NG: Short
4.5 PH2004 on the SCAN PWB Turn over the board and check each point of power IC as shown below.
A B PH2004 C D
Check point
Between A-B C-D
OK: Over 1k NG: Short
6(No.51767D)
5. INSPECTION OF SCAN IC DRIVERS According to the following procedures, measure and check OK or NG.
5.1 Scan IC drivers [A-D] Check each point with a circuit tester as shown below. Check point
Scan IC NEGA
Between NEGA - POSI
POSI
NEGA POSI
OK: Over 1k NG: Short
Measure the waveform of each point with a oscilloscope as shown below.
Scan IC
NEGA POSI
Out
NEGA
POSI
OUT
(No.51767D)7
DISASSEMBLY PROCEDURE
1. Removing the COMMON PWB (1) Detach the 7 connectors. (2) Remove the 8 screws [A]. (3) Remove the COMMON PWB. 2. Removing the DIGITAL PWB (1) Detach the 6 connectors. (2) Remove the 6 screws [B]. (3) Remove the DIGITAL PWB. 3. Removing the SCAN PWB (1) Detach the 11 connectors. (2) Remove the 7 screws [C]. (3) Remove the SCAN PWB. 4. Removing the SIGNAL RELAY PWB (upper left) (1) Detach the 6 connectors. (2) Remove the SIGNAL RELAY PWB (upper left). 5. Removing the SIGNAL RELAY PWB (upper right) (1) Detach the 7 connectors. (2) Remove the SIGNAL RELAY PWB (upper right). 6. Removing the SIGNAL RELAY PWB (lower left) (1) Detach the 7 connectors. (2) Remove the SIGNAL RELAY PWB (lower left). 7. Removing the SIGNAL RELAY PWB (lower right) (1) Detach the 7 connectors. (2) Remove the SIGNAL RELAY PWB (lower right).
SIGNAL RELAY PWB (upper left)
SIGNAL RELAY PWB (upper right)
A
B C
COMMON PWB
DIGITAL PWB
SCAN PWB
: Connector
SIGNAL RELAY PWB (lower left)
SIGNAL RELAY PWB (lower right)
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.51767D)
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/necnpd/ Fig. 1 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. 3 Fig. 5
Fig. 6
Fig. 4
(No.51767D)9
ADJUSTMENTS
Item Vsw VOLTAGE ADJUSTMENT Measuring instrument DC voltmeter Test point CN8 -pin 10 GND [COMMON PWB] Adjustment part VR101 [COMMON PWB] Description (1) Measur e the voltag e betwee n the pin 10 of th e connecto r [CN8 ] an d GN D on th e 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.
Vsw CN8 5 10
1
6
VR101
Vbw / Vp+ VOLTAGE ADJUSTMENT
DC voltmeter
CN2 -pin 3(Vbw) -pin 8 (Vp+) GND [SCAN PWB]
VR2 (Vbw) VR1 (Vp+) [SCAN PWB]
(1) Measur e the voltag e betwee n the pin 3 of th e connecto r [CN2 ] an d GN D o n th e 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 the pin 8 of CN2 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
9 1
VR1
Vbw
CN2
16
8
Vp+
10(No.51767D)
PDP UNIT
3
7
4
1
2
5
8
6
Ref No. 1 2 3 4 5 6 7 8
Parts No. NE-9S899485 NE-9S899631 NE-9S899329 NE-9S899325 NE-9S899331 NE-9S899327 NE-9S899446 NE-9S899632
Parts name SCAN PWB COMMON PWB SIGNAL RELAY PWB SIGNAL RELAY PWB SIGNAL RELAY PWB SIGNAL RELAY PWB RECOVERY RELAY PWB DIGITAL PWB
Description
(upper left) (upper right) (lower left) (lower right)
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.51767D)11
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.51767D)
Printed in Japan WPC