Read Sharp UP-600 / UP-700 (serv.man21) Service Manual online
CHAPTER 2. OUTLINE OF DRIVING CIRCUIT
1. Block diagram & Connection diagram
1) Block diagram
2) Connector table
Connect to the ECR PWB
CON1: <For ECR PWB>
PinNo.
Signal
Pin
No.
Signal
Pin
No.
Signal
Pin
No.
Signal
1
VHIN
2
CUTM+
3
CUTM-
4
CUTS
5
VJCOM
6
VJCOM
7
/JPFA
8
/JPFB
9
/JPFC
10
/JPFD
11
/JPES
12
GND
13
GND
14
GND
15
TM
16
VDD
(+5V)
(+5V)
17
/STB4
18
/STB3
19
Din
20
VH
21
VH
22
VH
23
VH
24
Dout
25
CLK
26
/LAT
27
/STB2
28
/STB1
29
GND
30
GND
31
GND
32
/RPES
33
VRCOM
34
VRCOM
35
/RPFA
36
/RPFB
37
/RPFC
38
/RPFD
39
PHUPS
40
VHOUT
CON2: <For Thermal head connector A>
Pin
No.
Signal
Pin
No.
Signal
Pin
No.
Signal
1
VH
2
VH
3
Dout
4
CLK
5
/LAT
6
/STB3
7
/STB1
8
GND
9
GND
CON3: <For Thermal head connector B>
Pin
No.
Signal
Pin
No.
Signal
Pin
No.
Signal
1
GND
2
GND
3
NC
4
TM
5
VDD (+5V)
6
/STB4
7
/DTB3
8
Din
9
VH
10 VH
CON4: <For Auto cutter unit>
Pin
No.
Signal
Pin
No.
Signal
1
CUTM+
2
CUTM-
3
CUTS
4
GND
CON5: <For Head up detector>
Pin
No.
Signal
Pin
No.
Signal
1
PHUPS
2
GND-L
CON6: <For Journal paper feed motor>
Pin
No.
Signal
Pin
No.
Signal
Pin
No.
Signal
1
VJCOM
2
VJCOM
3
/JPFA
4
/JPFB
5
/JPFC
6
/JPFD
CON7: <For Receipt paper feed motor>
Pin
No.
Signal
Pin
No.
Signal
Pin
No.
Signal
1
VRCOM
2
VRCOM
3
/RPFA
4
/RPFB
5
/RPFC
6
/RPFD
3) Thermal head block diagram
Thermal head connector A
Pin No.
Signal
Description
1
VH
Head application voltage
2
3
D out
Data output signal
4
CLK
Clock signal
5
/LAT
Latch Signal
6
/STB2
Strobe Signal 2
7
/STB1
Strobe Signal 1
8
GND
GND
9
Thermal head connector B
Pin No.
Signal
Description
1
GND
GND
2
3
3
TM
Thermistor detecting signal
4
VDD
+5V
5
/STB4
Strobe Signal 4
6
/STB3
Strobe Signal 3
7
D in
Data input signal
8
VH
Head application voltage
9
Print data which has been entered through Din signal synchronization
with the CLOCK signal is stored in /LAT according to the timing (864
dots) of the /LATCH signal. Stored print data is output by the
/STROBE1, /STROBE2, /STROBE3, and /STROBE4 signals to ener-
gize the heating element. The print data (864 dots) is divided by four
STROBE signals into the following four parts before being output.
with the CLOCK signal is stored in /LAT according to the timing (864
dots) of the /LATCH signal. Stored print data is output by the
/STROBE1, /STROBE2, /STROBE3, and /STROBE4 signals to ener-
gize the heating element. The print data (864 dots) is divided by four
STROBE signals into the following four parts before being output.
J
MOTOR
6
CON6(6P)
CON4(4P)
R
MOTOR
6
CON7(6P)
HEAD UP
SENSOR
CON5(2P)
FOR ECR PWB
CON2(9P)
Non-paper
detection
sensor(J)
FOR THERMAL HEAD
FOR THERMAL HEAD
CON3(10P)
CON1(40P)
PWB UNIT
Non-paper
detection
sensor(R)
VH
8, 9
GND
1, 2
STB4
5
4
3
STB3
6
DI
7
VDD
4
TM
3
Connector B
THERMISTOR
VH
1, 2
GND
8, 9
STB1
7
1
2
STB2
6
DO
3
CLK
4
Connector A
SHIFT REGISTER
LAT
5
LATCH REGISTER
DOT #1
DOT #864
The STB terminal is pulled
in the IC.
in the IC.
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