two
、
The red led lights
,
but doesn’t turn to yellow after power on and black display
power on,check
XP801 4 pin standby
is low≦0.5Vvoltage
yes
无
check N803、N804
output voltage
checkXP801 D6V、VDD
no
1、check
connector
2、check PDP
power
yes
1、check PW113
power impedance
2、checkN803、
N804
No
check X3 14.318M
crystal
Yes
No
change Y2
crystal
check PW113
RESET pin
voltage
Yes
check
resetcircuit
No
check AM29LV800BT to
PW113 address、data、
control
Yes
change
AM29LV800BT or
PW113 and wire
between them
I
2
Cbus
1、check VPC3230、PW1235
power circuit
2、check VPC3230、PW1235
reset voltage
3、check VPC3230、PW1235
peripherally circuit
normal
abnormality
check bus
circuit and PCB
wire
44
Summary of Contents for H-PDP4201
Page 14: ...PW113 Block Diagram 14 ...
Page 18: ...18 ...
Page 19: ...PW1235 Block Diagram 2 2 5 TA2024 general 19 ...
Page 23: ...DS90CF383 Block Diagram 23 ...
Page 26: ...26 ...
Page 51: ...Annex 1 装配图 51 ...
Page 52: ...Annex 2 52 ...