Acroprint ES700 User manual

5640 Departure Drive
Raleigh, NC 27616
www. acroprint. com
[phone]
06-0297-000 Rev. B
ELECTRONIC TIME RECORDER

Service Manual
CONTENTS
1. OUTLINE........................................................................................................
2. BLOCK DIAGRAM........................................................................................
3. DISASSEMBLY AND REASSEMBLY OF BASIC PARTS........................
3- 1. Exploded View........................................................................................
3- 2. Tools Required........................................................................................
3- 3. Disassembly.............................................................................................
3- 4. Reassembly..............................................................................................
4. DISASSEMBLY AND REASSEMBLY OF MECHANISM.........................
4- 1. Exploded View, Oiling Instruction Diagram...........................................
4- 2. Tools, Oils and Detergent Required........................................................
4- 3. Disassembly.............................................................................................
4- 4. Reassembly..............................................................................................
5. TROUBLESHOOTING...................................................................................
5- 1. No Operation............................................................................................
5- 2. No Display on the LCD Panel.................................................................
5- 3. Setting Switch Malfunctioning................................................................
5- 4. Motor Operation Failure..........................................................................
5- 5. No Printing...............................................................................................
5- 6. How to locate Problems from the Error Codes........................................
6. MEASUREMENT...........................................................................................
6- 1. Voltage Check.........................................................................................
6- 2. Motor Operation Check...........................................................................
6- 3. Print Head Resistance Measurement.......................................................
7. CONTROL CIRCUIT OPERATION..............................................................
7- 1. Control Circuit........................................................................................
7- 2. Block Diagram of Circuits.....................................................................
7- 3. CPU........................................................................................................
7- 4. Port List..................................................................................................
7- 5. Operation Mode......................................................................................
7- 6. LCD........................................................................................................
7- 7. Switch.....................................................................................................
7- 8. Sensor.....................................................................................................
7- 9. Encoder...................................................................................................
7-10. Motor......................................................................................................
7-11. Print Head...............................................................................................

8. POWER SUPPLY CIRCUIT...........................................................................

9. INSPECTION SHEET.....................................................................................

10. ERROR CODE LIST.......................................................................................

11. CONNECTOR PIN ASSIGNMENT...............................................................
12. CIRCUIT DIAGRAM......................................................................................

13. PARTS LIST....................................................................................................
1- 1
2- 1
3- 1
3- 2
3- 3
3- 3
3- 7
4- 1
4- 2
4- 3
4- 4
4-12
5- 1
5- 2
5- 3
5- 4
5- 5
5- 6
5- 7
6- 1
6- 2
6- 2
6- 3
7- 1
7- 2
7- 2
7- 3
7- 3
7- 4
7- 5
7- 6
7- 6
7- 6
7 - 7
7- 7
8- 1
9- 1
10- 1
11- 1
12- 1
13- 1

1-1
Be careful to avoid electric shock when repairing this unit.
1. OUTLINE
Wall-mount holes
<Back view>
<Cover off>
<Front view>
JAN 31AM12:00
JAN 31AM12:00
JAN31A
15mm
30mm
<Print position adjuster>
The print position from the card
edge is adjustable by pressing
and sliding the print position
button located on the bottom .
Cover
Display
Key Top
Key hole
AC Adapter Ass'y
Display
Ink Ribbon Ass'y
Print Head
Setting switch

2-1
2. BLOCK DIAGRAM
Mechanism
Q7150-4000
Switch PCB Ass'y
Q7150-5007A
Home position
Motor Encoder sensor Print Head Paper Sensor Key Top
Connector Harness Ass'y Q7000-5163A
Sensor Harness B Unit Q7150-5165U 
Print Head Q7000-8000
Control PCB Ass'y
AC Adapter Ass'y
Q7152-5210A
LCD Panel
Q7150-5505
Q7150-5001A
CN5 CN3 CN4 CN2
CN1 CN6
20
2
212442
8
3

3-1
3. DISASSEMBLY AND REASSEMBLY OF
BASIC PARTS
3-1. Exploded View .................................................................. 3-2
3-2. Tools Required .................................................................. 3-3
3-3. Disassembly ....................................................................... 3-3
3-4. Reassembly ........................................................................ 3-7
CONTENTS

3-2
3-1. Exploded View
P.H.T. Screw (BT) 3x8
P.H. Screw M4x10, SPW
84001-3026
84001-4019
General-use partsRef No. Part No.
Lock Lever
P/N Q7152-2084
Top Enclosure
P/N Q7152-2001
Cover B
P/N Q7152-2184
AC Adapter Ass'y
P/N Q7152-5210A
Indicator Plate
P/N Q7152-2010
Selection Label
P/NQ7152-2042
Paper Rack
P/N Q7152-2070
Rubber
P/N Q7150-2065
PL Label
P/N Q0070-2646
Bottom Enclosure
P/N Q7152-2003
UL,CSA,FCC Label
P/N Q0106-8665-1
Key Top
P/N Q7152-2510
Printer Cover
P/N Q7152-2002
LCD Panel
P/N Q7150-5505
Control PCB Ass'y
P/N Q7150-5001A
Mechanism Block
h
h
hi
ii
k
m
k
kk
m

3-3
3-2. Tools Required
Tools required :
1. No. 2 or #2 Phillips screwdriver
2. Miniature screwdriver
3-3. Disassembly
Disassemble the parts in the following order :
(1) Top Enclosure
(2) Printer Cover 
(3) Control PCB Ass'y 
(4) LCD Panel  
(5) Mechanism Block 
(1) Removing the Top Enclosure
1. Unlock the Lock Lever and remove the Top Enclosure.
*If the Lock Lever cannot be used, the unit may be unlocked by using tweezer with rounded points to push
the two holes on the rear of the Top Enclosure.
(1)
(1)—(2)
(1)—(2)—(3)
(1)—(2)—(3)—(4)
(1)—(2)————— – (5)
Top Enclosure
P/N Q7152-2001
Lock Lever
P/N Q7152-2084

3-4
(2) Removing the Printer Cover
1. Remove the AC Adapter Ass'y cord.
2. Remove two screws k holding the Printer Cover.
[Screw k : P.H.T. Screw (BT) 3x8 : 2 pieces]
2. Lift the Printer Cover up and turn to the same direction as the illustration (about 90°).
3. Remove harness from the connector of Control PCB Ass'y.
CN1
CN2
CN3
CN4
CN5
20
3
8
12
2
Q7150-5505
Q7150-5007A
Q7150-5165U
Q7000-8000
Q7000-5163A
Connector No. Part No.Numbers of Wire
n
h
i
p
q
AC Adapter Ass'y
P/N Q7152-5210A
Printer Cover
P/N Q7152-2002
Printer Cover
P/N Q7152-2002
Control PCB Ass'y
P/N Q7150-5001A
q
p
k
n
i
h

(3) Removing the Control PCB Ass'y
1. Remove two screws k holding the Control PCB Ass'y.
[Screw k : P.H.T. Screw (BT) 3x8 : 2 pieces]
2. Remove the Control PCB Ass'y from the Printer Cover hooks by rotating it.
(4) Removing the LCD Panel
1. Remove a tape.
2. After releasing the two hooks holding the LCD Panel, push the LCD from the other side, and remove the
LCD Panel.
*Since the hooks that hold the LCD Panel break easily, please do not push any harder than necessary.
Hook
Printer Cover
P/N Q7152-2002
Control PCB Ass'y
P/N Q7150-5001A
LCD Panel
P/N Q7150-5505
Printer Cover
P/N Q7152-2002
k
3-5
Hook
Tape

3-6
(5) Removing the Mechanism Block
1. Insert the miniature screwdriver in the hole of the Bottom Enclosure back side, and release the two hooks
holding the Paper Rack .
Bottom Enclosure
P/N Q7152-2003
Hole
Paper Rack
P/N Q7152-2070
Paper Rack
P/N Q7152-2070
2. Lift the front edges of the Paper Rack, and pull it out.
Hook

3. Remove the Key Top.
4. Release harness connecting with Switch PCB Ass'y from the hook.
5. Open the hook and release fixing of Switch PCB Ass'y.
6. Remove two screws m holding the Mechanism Block.
[Screw m : P.H. Screw M4x10 , SPW : 2 pieces]
7. Remove the Mechanism Block by rotating it in the same direction as the illustration.
3- 4. Reassembly
Reassembly of parts is performed by reversing the disassembly procedure.
Note the following points :
(1) Make sure that all connectors and screws are properly secured in place.
(2) Take care to avoid catching or cutting the harnesses or cables when mounting parts.
(3) Once reassembled, check all functions to ascertain that the reassembly procedure has been properly completed.
Key Top
P/N Q7152-2510
Switch PCB Ass'y
P/N Q7150-5007A
Hook
Hook
3-7
Mechanism Block
m

4-1
4. DISASSEMBLY AND REASSEMBLY OF
MECHANISM
4-1. Exploded View, Oiling Instruction Diagram ............................... 4- 2
4-2. Tools, Oils and Detergent Required ............................................. 4- 3
4-3. Disassembly ................................................................................. 4- 4
4-4. Reassembly ................................................................................... 4-12
CONTENTS

4-2
4-1. Exploded View, Oiling Instruction Diagram
h
i
P/N Q7150-5007A
P/N Q7150-5165U
Switch PCB Ass'y
Sensor Harness B Unit
a
b
c
d
r
84009-1060
84001-2641
84001-3025
84001-3250
84001-3026
Tielap TY-23M
P.H. Screw M2.6x5
P.H.T. Screw(BT) 3x6
P.H.T. Screw(BT) 3x6, PW
P.H.T. Screw(BT) 3x8
e
f
g
YM-103
SFP-13
N-4K
Lubricant
Part No.General-use parts
Ref No.
Motor Ass'y
P/N Q7150-1014A
Base Plate Ass'y
P/N Q7150-1040A
Guide Shaft
P/N Q7150-1051
Tractor Shaft Spring
P/N 84950-1586
Paper Pressure Plate Ass'y
P/N Q7150-1067A
Stopper A
P/N Q7150-1234
Bottom Plate
P/N Q7150-1694
Platen Gear B
P/N Q7150-1551
Mid Gear
P/N Q0100-1137 Cam Gear
P/N Q0100-1554-1
Bearing
P/N Q0100-1035
Bearing
P/N Q0100-1035
Platen Gear
P/N Q7150-1082
Carrier Spring
P/N Q7000-1166-1
Carrier Ass'y
P/N Q7150-1160A
Print Head
P/N Q7000-8000
Platen Ass'y
P/N Q7150-1060A
Sheet
P/N Q7150-1842-1
Reinforcing Plate
P/N Q7150-1054
Reinforcing Plate
P/N Q7150-1054
Platen Plate
P/N Q7150-1629
Platen Plate Spring
P/N Q7150-1630
Carrier Sub Plate
P/N Q7000-1466
Ribbon Driving Wheel
P/N Q7000-1673
Clutch Gear
P/N Q7000-1548
Ink Ribbon Ass'y
P/N Q7014-1310A
Head Holding Plate
P/N Q7000-1729
Ribbon Driving Shaft
P/N Q7000-1674-1
Sensor Lever
P/N Q7150-1886
Sensor Block
P/N Q7150-1885
Cam C
P/N Q7150-3276
Cam Shaft
P/N Q7150-1527
Platen Cover
P/N Q7150-1648
c
h
c
h
d
c
ib
c
Cam
P/N Q0100-1576
Lead Screw Shaft
P/N Q7000-1327
r
c
i
e
g
e
f
f
Shank of
Cam B
Blade part of Cam
and Cam B
Spacer
P/N Q7150-1387
f
e
Cam B
P/N Q0100-3275

4-3
Tools required :
1. No. 2 or #2 Phillips screwdriver
2. No. 1 or #1 Phillips screwdriver
3. Standard blade type screwdriver with a tip thickness of 1mm or less
4. Tweezers (for small parts)
Oils required :
1. YM-103 (The blade part of Cam and Cam B, Cam C, Shaft of Platen Plate )
2. SFP-13 (Shaft of Cam B, Cam Shaft)
3. N-4K (Guide Shaft)
Detergent required :
1. Alcohol (for cleaning the parts)
*To clean the parts, moisten a soft cloth with alcohol and wipe. Do not dip the parts directly into alcohol.
4-2. Tools, Oils, and Detergent Required

4-4
4-3. Disassembly
Disassemble the parts in the following order :
(1) Ink Ribbon Ass'y
(2) Head Holding Plate
Print Head
(3) Platen Cover 
(4) Platen Gear
Cam Gear
Mid Gear
Base Plate Ass'y
Spacer
(5) Bearing  
Guide Shaft
Carrier Ass'y
Carrier Spring
Carrier Sub Plate
Ribbon Driving Wheel
Clutch Gear
Ribbon Driving Shaft
(6) Lead Screw Shaft 
Cam
Cam B
Tractor Shaft Spring
Bearing
(7) Sensor Harness B Unit
(8) Motor Ass'y 
(9) Sheet  
(10) Platen Ass'y
Cam Shaft
Platen Gear B
Cam C
Platen Plate
Platen Plate Spring
(11) Sensor Block 
Sensor Lever
Switch PCB Ass'y
(12) Stopper A  
Reinforcing Plate
Paper Pressure Plate Ass'y
Bottom Plate
(1)
(1) (2)
(1) (3)
(1) (3) (4)
(1) (2) (3) (4) (5)
(1) (3) (4) (5) (6)
(1) (3) (4) (7)
(1) (3) (4) (7) (8)
(1) (3) (4) (9)
(1) (3) (10)
(1) (3) (10) (11)
(1) (3) (4) (9) (10) (12)

4-5
(1) Removing the Ink Ribbon Ass'y
1. Hold the handle of the Ink Ribbon Ass'y and remove it by pulling sideways.
(2) Removing the Head Holding Plate and Print Head
1. Put the Head Holding Plate in the direction of arrow A with a screwdriver or tweezers and remove it.
2. Pull up the Print Head and remove it in the horizontal direction as shown by arrow B.
Ink Ribbon Ass'y
P/N Q7014-1310A
Handle
Head Holding Plate
P/N Q7000-1729
Print Head
P/N Q7000-8000
B
A

4-6
(3) Removing the Platen Cover
1. Remove two screws c holding the Platen Cover and move the Sensor Block in the direction shown by arrow A
so as to slide the Platen Cover in the direction shown by arrow B for removal.
[Screw c : P.H.T. Screw (BT) 3x6 : 2 pieces]
*Carry out the procedure with the Platen Ass'y pressed downward. (Rotate the Cam Shaft to press down the
Platen Ass'y. As the Platen Ass'y moves just underneath, it will emit a click sound.)
(4) Removing the Platen Gear, Cam Gear, Mid Gear, Base Plate Ass'y, and Spacer.
1. Remove the Platen Gear, Cam Gear, Mid Gear.
2. Remove two screws c holding the Base Plate Ass'y.
[Screw c : P.H.T. Screw (BT) 3x6 : 2 pieces]
3. Remove the Spacer.
Base Plate Ass'y
P/N Q7150-1040A
Cam Gear
P/N Q0100-1554-1
Mid Gear
P/N Q0100-1137
Platen Gear
P/N Q7150-1082
Spacer
P/N Q7150-1387
c
Platen Cover
P/N Q7150-1648
B
A
c

4-7
(5) Removing the Bearing (this side), Guide Shaft, Carrier Ass'y, Carrier Spring,
Carrier Sub Plate, Ribbon Driving Wheel, Clutch Gear, and Ribbon Driving Shaft.
1. Remove one screw c holding the Bearing (this side).
[Screw c : P.H.T. Screw (BT) 3x6 : 1 piece]
2. Remove the Guide Shaft from the Base Plate Ass'y.
3. Remove the Carrier Ass'y from the Base Plate Ass'y.
4. Remove the Carrier Spring from the Carrier Ass'y.
5. Remove one screw d holding the Carrier Sub Plate.
[Screw d : P.H.T. Screw (BT) 3x6, PW : 1 piece]
6. Remove the Ribbon Driving Wheel, Clutch Gear, and Ribbon Driving Shaft.
Bearing
P/N Q0100-1035
Base Plate Ass'y
P/N Q7150-1040A
Carrier Spring
P/N Q7000-1166-1
Carrier Ass'y
P/N Q7150-1160A
Ribbon Driving Wheel
P/N Q7000-1673
Ribbon Driving Shaft
P/N Q7000-1674-1
Clutch Gear
P/N Q7000-1548
Guide Shaft
P/N Q7150-1051
Carrier Sub Plate
P/N Q7000-1466
c
d

4-8
(6) Removing the Lead Screw Shaft, Cam, Cam B, Tractor Shaft Spring, and Bearing
1. Pull out the Lead Screw Shaft from the Cam B
2. Remove the Cam, Cam B, and Tractor Shaft Spring.
3. Remove one screw c holding the Bearing.
[Screw c : P.H.T. Screw (BT) 3x6 : 1 piece]
(7) Removing the Sensor Harness B Unit
1. Remove one screw c and one screw r holding the Sensor Harness B Unit
[Screw c : P.H.T. Screw (BT) 3x6 : 1 piece]
[Screw r : P.H.T. Screw (BT) 3x8 : 1 piece]
Cam
P/N Q0100-1576
Cam B
P/N Q0100-3275
Base Plate Ass'y
P/N Q7150-1040A
Lead Screw Shaft
P/N Q7000-1327
Sensor Harness B Unit
P/N Q7150-5165U
Base Plate Ass'y
P/N Q7150-1040A
Tractor Shaft Spring
P/N 84950-1586
Bearing
P/N Q0100-1035
c
c
r

4-9
(8) Removing the Motor Ass'y
1. Remove two screws b holding the Motor Ass'y.
[Screw b : P.H. Screw M2.6x5 : 2 pieces]
(9) Removing the Sheet
1. Remove the Sheet.
Motor Ass'y
P/N Q7150-1014A
Base Plate Ass'y
P/N Q7150-1040A
Sheet
P/N Q7150-1842-1
b