Sharp AM-900 Service Manual page 103

11
LCD not display correctly
(Motor initialize OK)
12
LCD not display correctly
(Motor not initialized)
13
Panel Key
Sensing Error
14
PANEL LED
not light
LCD control ERROR
System ERROR
IC1 (Main CPU)
CNPN
connector
IC10 (Buffer)
C,R on route of
IC1~CNPN
C,R on route of
CNPN~IC10~IC1
IC1 (Main CPU)
Q4/Q7 (Tr)
CNPN
connector
C,R on route of
IC1~Q4~Q7~CNPN
5 – 30
IC1 (Main CPU)
CNPN
Connector
C,R on route
of IC1~CNPN
IC1 (Main CPU)
IC4 (SDRAM)
IC5 (RESET IC)
IC6 (FLASH)
X3 (X'tal) and around
C,R on route
of IC1~IC4 and IC6
C,R on route
of IC5~ IC1
Power Line
+3.3V, +1.8V
AM-900U