Service manual

AR-M351U/M451U, AR-M355U/M455U ELECTRICAL SECTION 13 - 23
*1: Multi paper feed tray vertical size detection
*2: Options
XSYNC LSU horizontal sync
detection signal
LSU horizontal sync
detection (BD sensor
signal)
——16 4 PCU
XTHV+PWM Transfer charger output
control signal (THV+)
Transfer charger output
control (PWM control)
——15 6 PCU
XTHV-PWM Transfer charger output
control signal (THV-)
Transfer charger output
control (PWM control)
——15 9 PCU
XTHVREM Transfer charger control
signal (THV)
Transfer charger ON/OFF
control
ON OFF 15 12 PCU
XTRC Paper transport roller
clutch control signal
Paper transport roller ON/
OFF control
——13 12 PCU
XTRC_DSK Paper transport timing
signal
Paper transport timing ——11 18 PCU
XVFM1_PWM Cooling fan control signal Cooling fan control Max. air flow OFF 16
16
23
26
PCU
XVFM2PWM Heat exhaust fan control
signal
Heat exhaust fan control Max. air flow OFF 4 22 PCU
XVIDEO Image signal Image signal to the LSU ——16 14 PCU
Vertical size detection: Connector level Paper size
Multi paper feed tray 1 M1SS1 M1SS2 M1SS3 M1SS4
AB series Inch series China series
Multi paper feed tray 2 M2SS1 M2SS2 M2SS3 M2SS4
1 L L H L B5 Extra K16
2HLHLA4
A5R
LT
INVR
A4
A5R
3 H L L L B5R EX-R K16R
4 H H L L A4R LTR A4R
5 L H L L Foolscap Extra Foolscap
6LHLHB4LGLK8
7 LLLHA3WLT
0 H H H H Tray not installed
No. CV_SIZE3 CV_SIZE2 CV_SIZE1 CV_SIZE0 Paper size
0 0 0 0 0 none
10001A3
20010A4
30011LT
40100B4
50101LG
60110WLT
70111INV
81000B5
91001Extra
101010A5
111011F4
121100A4R
131101B5R
141110LTR
151111A5R
Signal name Name Function/Operation
Connector level
Connector
No.
Pin
NO.
PWB
name
Remark
LH