Read Sharp UP-600 / UP-700 (serv.man21) Service Manual online
STROBE No.
DOT No.
Dots/Strobe
Note
/STROBE4
577
∼
864
288
Excluding dots No.1
∼
8,
369
∼
496 and 857
∼
864
/STROBE3
433
∼
576
144
/STROBE2
289
∼
432
144
/STROBE1
1
∼
288
288
4) Motor block diagram
<JOURNAL MOTOR>
PIN
No.
SIGNAL
NAME
DESCRIPTION
1
VJCOM
COMMON voltage
2
3
/JPFA
JOURNAL-side paper feed motor phase A
driving signal
driving signal
4
/JPFB
JOURNAL-side paper feed motor phase B
driving signal
driving signal
5
/JPFC
JOURNAL-side paper feed motor phase C
driving signal
driving signal
6
/JPFD
JOURNAL-side paper feed motor phase D
driving signal
driving signal
<RECEIPT MOTOR>
PIN
No.
SIGNAL
NAME
DESCRIPTION
1
VRCOM
COMMON voltage
2
3
/RPFA
RECEIPT-side paper feed motor phase A
driving signal
driving signal
4
/RPFB
RECEIPT-side paper feed motor phase B
driving signal
driving signal
5
/RPFC
RECEIPT-side paper feed motor phase C
driving signal
driving signal
6
/RPFD
RECEIPT-side paper feed motor phase D
driving signal
driving signal
The paper feed motors are stepping motors with 4-phase driving
coils. The motors are driven by switching over the driving coils.
coils. The motors are driven by switching over the driving coils.
<MOTOR DRIVE SEQUENCE> ON: Energized/OFF: Not energized
JOURNAL MOTOR
STEP No.
PHASE A
PHASE B
PHASE C
PHASE D
1
ON
OFF
OFF
ON
2
ON
OFF
ON
OFF
3
OFF
ON
ON
OFF
4
OFF
ON
OFF
ON
RECEIPT MOTOR
STEP No.
PHASE A
PHASE B
PHASE C
PHASE D
1
ON
OFF
ON
OFF
2
ON
OFF
OFF
ON
3
OFF
ON
OFF
ON
4
OFF
ON
ON
OFF
5) End sensor block diagram
SIGNAL NAME
DESCRIPTION
+5V
+5V
/RPES
Receipt paper end sensor detecting signal
/JPES
Journal paper end sensor detecting signal
GNDL
GND
The photo diode on the PWB detects the presence/absence of the
paper passing under the journal and receipt platens.
paper passing under the journal and receipt platens.
6) Head up sensor
SIGNAL NAME
DESCRIPTION
PHUPS
Head-up detecting signal
GNDL
GND
The micro switch at the left side of the printer detects the head-up
state.
state.
ON:
Head-down
OFF: Head-up
7) Block Diagram of Autocutter Motor
SIGNAL NAME
DESCRIPTION
CUTM+
Motor + Pin connection
CUTM
Motor - Pin connection
The 24 VAC motor is used to operate the autocutter,. The cutting
method can be selected between full cutting and partial cutting by
changing the turning direction of the motor at the ECR side.
method can be selected between full cutting and partial cutting by
changing the turning direction of the motor at the ECR side.
Motor +/- Pin Control
Turning direction
of motor
Cutting method
CUTM+
CUTM-
H
L
CCW
Full cutting
L
H
CW
Partial cutting
L:
Connected to GND
H:
Connected to 24VDC
CCW: Counterclockwise
CW:
CW:
Clockwise
8) Block Diagram of Autocutter’s Home Position
SIGNAL NAME
DESCRIPTION
CUTS
Home position detecting signal
GND
GND
The micro switch is used to detect the home position of the autocutter.
A
B
C
D
M
/RPFA, /JPFA
/RPFB, /JPFB
/RPFC, /JPFC
/RPFD, /JPFD
VRCOM, VJCOM
VRCOM, VJCOM
stepping motor
+5V
/RPES, /JPES
GND-L
1
2
3
4
39K
Ω
220
Ω
reflex photo sensor
0.1µF
GND-L
PHUPS
micro switch
CUMT-
CUTM+
M
GND
CUTS
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