Read Sharp AM-400 (serv.man5) Service Manual online
AM-400DE
5 – 28
Thermister Error
SYSTEM ERROR
[P3]
SYSTEM ERROR
[P4]
Printer Control Microcomputer
ROM/RAM Error
Fuser Temp.
too High
SYSTEM ERROR
[P5]
Temp. detect
Error
Heater control Error
/HLON, /PWRLY signal
IC21 (Printer CPU)
IC22
(Regulator IC)
D13 (Diode)
C, R on route
of CNRTH~IC21
CNRTH (Connector)
IC21 (Printer CPU)
CNRTH (Connector)
Other parts on route
of CNRTH~ IC21
IC21 (Printer CPU)
CNPW-12pin/13pin
IC32 (driver)
B
3
4
5
C
Fuser Temp.
too Low
SYSTEM ERROR
[P6]
Temp. detect
Error
Heater control
Error
/HLON, /PWRLY
signal
Safety circuit
No detect zerocross
signal (/ZC)
IC21 (Printer CPU)
CNRTH (Connector)
C, R on route
of CNRTH~IC21
IC21 (Printer CPU)
CNPW-12pin/13pin
IC32 (driver)
R335, R336
IC31 (Comparator)
IC25,IC29,IC33
R, C around above
ICs
R, C around above
IC31
IC21 (Printer CPU)
C, R on route
of CNPW-14~IC21
CNPW-14pin
C
D
6
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