(Table of sensors/detectors)
SENSOR/
DETECTOR’S
NAME
DESCRIPTION
FUNCTION
DOP
Cabinet switch
(24V power line on/off)
Active low (when the
printer cover is opened)
HFIN (PDDI) Manual paper feed
detector
Active low
PIN
Paper in detector
Active low
POUT
Paper out detector
Active low
PE
Paper empty detector
Active high (with paper)
PS0
Paper size sensor
Active high
PS1
Paper size sensor
Active high
PS2
Paper size sensor
Active high
PS3
Paper size sensor
Active high
PS4
Paper size sensor
Active high
(PCD)
Photoconductor detector
Active high (with the
photoconductor installed)
(WTBS)
Waste toner box
detector, waste toner full
detector
Active high (with the
waste toner box not
installed or full)
EXPE
Optional paper feed unit
paper empty detector
Active high (with paper)
EXPS0
Paper size sensor
(optional paper feed unit)
Active high
EXPS1
Paper size sensor
(optional paper feed unit)
Active high
EXPS2
Paper size sensor
(Optional paper feed unit)
Active high
EXPUSD
Optional paper feed unit
installation detector
(Connector connection
detector)
Active high (with the
optional paper feed unit
installed)
OHPIN
Transmission film sheet
sensor
Active high
TDPOS
Transfer drum home
position sensor
Active high
GAMMA
Image density sensor
Analog signal
PSJAM
(OHP JAM)
Separation sensor
Active low
OILSN
Oil sensor
Active high
CLJAM
Transfer drum cleaner
section jam
Active low
(Paper size and sensor operation)
Standard paper feed unit
Sensor
Paper size
PS0
PS1
PS2
PS3
PS4
A5
ON
OFF
OFF
OFF
OFF
INVOICE
OFF
ON
OFF
OFF
OFF
LETTER
OFF
OFF
ON
OFF
OFF
A4
OFF
OFF
OFF
ON
OFF
LEGAL
OFF
OFF
OFF
OFF
ON
NO TRAY
OFF
OFF
OFF
OFF
OFF
Option paper feed unit
Sensor
Paper size
EXPS0
EXPS1
EXPS2
A5
ON
OFF
OFF
INVOICE
ON
OFF
ON
LETTER
OFF
OFF
ON
A4
ON
ON
OFF
LEGAL
OFF
ON
OFF
NO TRAY
ON
ON
ON
(3) Laser scanning unit operation check
a. Menu display
OPTICAL SYS TEST
b. Details
When the FORM FEED (PAPER EXIT) key is pressed, the laser
diode of the laser scanning unit and the scanning motor are turned on
for 30 sec.
When the HSYNC signal is normally outputted, the ON LINE (ON-
LINE) lamp lights up.
During the operation, if the HSYNC signal is not normally outputted or
if the printer cover is forcibly opened, the ERROR lamp lights up.
To execute the diagnostics, press the FORM FEED (PAPER EXIT)
key. To cancel, press the RESET key.
To go to the next menu, press the MENU key when the diagnostics
operation is halted.
SHARP SERVICE MANUAL JX8200SM [10] DIAGNOSTICS
10 – 8
Содержание JX-8200
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