5H2
2-3-1
2-3 Operation of the PWBs
2-3-1
Main PWB
Figure 2-3-1Main PWB block diagram
CPU
(IC3)
EEPROM
(IC2)
Reset
(IC1)
Paper
feed
sensor
Motor
driver IC
(IC4)
Driver
circuit
Paper
feed
motor
Paper
gauge
sensor
1
Paper
gauge
sensor
2
Cassette
size
switch
Printer/
Upper
paper
feeder
Printer/
Lowe
paper
feeder
Paper
feed
clutch
DC24V, DC5V
Main PWB
OPSDI, OPSDO
OPSEL0, OPSEL1, OPSEL2
DI, DO
SW1, SW2, SW3
RST
M_SM1
M_SM2
M_REF
ENABLE
PFM_A
PFM_*A
PFM_B
PFM_*B
+24V1
SK
CS
OPRDYN
OPSCLK
+5V
+24V
Summary of Contents for PF-430
Page 1: ...SERVICE MANUAL Published in January 2006 845H2110 5H2SM060 First Edition PF 430...
Page 2: ...Revision history Revision Date Replaced pages Remarks...
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Page 13: ...5H2 1 1 3 1 1 3 Machine cross section Figure 1 1 2Machine cross section Paper path...
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