![background image](http://html.mh-extra.com/html/viewsonic/vg170mvlcds23724-3w/vg170mvlcds23724-3w_service-manual_1021066012.webp)
YES
NO
NO
YES
YES
OK
FLASH MEMORY
CKT START
FLASH MEMORY CKT
CHECK U3 RESET(pin 2),X1
(14.318MHZ
) SIGNAL
C
CHECK U5 (pin2~12
,23,25~29) ADDRESS ;
(pin13~15,17~21) DATA
SIGNAL
END
CHECK U5
OR REPLACE
YES
YES
YES
NO
NO
OK
GM2121 CKT
START
END
REPLACE U4
CHECK U2 RXE3+ , RXE3- , RXE2+ ,
RXE2- , RXE1+ , RXE1- , RXEC+ , RXEC-
CHECK U4 I2C SIGNAL
CHECK U6 INPUT
CHECK FLASH MEMORY
INPUT & H&V BUFFER
CKT
And RXO3+ , RXO3- , RXO2+ , RXO2- ,
RXO1+ , RXO1- , RXO0+ , RXO0- , RXOC+
, RXOC-
GM2121 CKT
9
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG170m