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GM-P420E

SERVICE MANUAL
PLASMA DISPLAY MONITOR

GM-P420E/AU
Supplementary

BASIC CHASSIS

S3

The following item for the GM-P420E/AU model was changed partly from GM-P420E/A model. Therefore, this service manual describes only the items, which differ from those of the GM-P420E/A service manual. For details other than those described in this manual, please refer to the GM-P420E/A model service manual (No.51953B, Jul. 2002).

OUTLINE
Since this model changed a performance into Australia turning, we have issued the SERVICE MANUAL for GM-P420E/AU.

HOW TO IDENTIFY MODELS
Indicated model name "GM-P420EAU" on the Rating Label.

Indicated GM-P420EAU

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COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

No.51953D Oct. 2002

GM-P420E

ADDITION ITEMS
ADJUSTMENT
Item AD INPUT OFFSET (480i) adjustment Test equipment NTSC signal generator (component output) Oscilloscope Test points TP-PR (IC205 31pin) TP-PB (IC205 53pin) [MAIN PWB] Adjustment locations I(B19) : OUTPUT MODE W(E11) : AD PR OFFSET W(E13) : AD PB OFFSET Adjustment procedure 1. Input the 480i whole black component video signal to the COMPONENT terminal. 2. Connect the oscilloscope to the TP-PR (31 pin of IC 205 - the highest bit). 3. Enter SERVICE MENU, and select the DEVICE INITIAL VALUE. 4. Select the IB:CXA3506R in the DEVICE INITIAL VALUE, and select the I(B19). 5. Change the value of I(B19) in order of 000001000. By
Horizontal duration Picture signal duration (A) W(E11) /W(E13) Too low Increase the value 0V 5V

doing this adjustment, the internal system in the microcomputer is changed. So you must do this adjustment without fail. 6. Return to SERVICE MENU. 7. Select the WHITE BALANCE BLOCK. 8. Adjust the values W(E11) so that the brightness at the Low (0V) and High (5V) of the digital signal voltage corresponding to the picture signal duration become uniform (or the same ratio of appearance). Although there are several kinds of states in (B), adjust the value within 2-3 from the initial value. 9. In the same manner as for 8. above, connect oscilloscope to the TP-PB (53 pin of IC 205 - the highest bit) and adjust the value W(E13).

5V (B) Sate of an optimum adjustment

Decreae the value

0V 5V

(C) W(E11) /W(E13) Too high 0V

Fig. 1

Fig. 2

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No. 51953D

GM-P420E

CHANGED ITEMS
CHANGE OF INPUT SIGNAL GM-P420E/A INPUT SIGNAL 1080/60i 1035/60i

GM-P420E/AU 1080/50i
Not available

NOTE: In accordance with the change this time, the HD SIGNAL MODE in the SET UP MENU will not be displayed. As a result, you can not switch the 1080/60i to the 1035/60i.

DIFFERENT ITEM
USING PW BOARDS (Page 4) (Although the PWB numbers have been changed, there is no change in other PWBs except for the MAIN PWB)
MODEL PWB ASS'Y

GM-P420E/A FX-1175A FX-4086A FX-6120A FX-6117A FX-6124A FX-6128A FX-7053A FX-7049A FX-9093A

GM-P420E/AU FX-1182A FX-4090A FX-6136A FX-6137A FX-6138A FX-6139A FX-7056A FX-7057A FX-9095A

Description Compatible

MAIN PWB CONTROL PWB RGB INPUT PWB VIDEO INPUT PWB SP TERMINAL L PWB SP TERMINAL R PWB LED PWB TEMP. SENSOR PWB LINE FILTER & AUDIO PWB

EXPLODED VIEW PARTS LIST() (Page 5) ! ! Ref. No. 12 Parts No. GM-P420E/A LC21097-006A-0L Parts Name ROLL R LABEL Description

GM-P420E/AU LC21097-008A-0L

PRINTED WIRING BOARD PARTS LIST

MAIN P.W. BOARD ASS'Y (Page 2735)
!
Symbol No. R1540 R1599 C1543 IC1602 AT24C64-GMP420E Parts No. FX-1175A

FX-1182A NRSA63J-823X QRE141J-273Y NDC31HJ-271X AT24C64-P420EAU

Parts name
MG R CR C CAP IC (MEMORY)

Description 82k 1/16W J 27k 1/4W J 270pF 50V J SERVICE

PACKING PARTS LIST (Refer to the page 76 in the GM-P420E SERVICE MANUAL (No.51953. Apr. 2002) ) ! ! ! Ref. No. 11 13 Parts No. GM-P420E/A QMPP070-250-K LCT1150-001C

GM-P420E/AU QMPH030-250-K LCT1315-001A

Parts Name POWER CORD INST BOOK

Description For AUSTRALIA

No. 51953D

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VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan

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Printed in Japan 0210 WPC DP205859