Citizen CBM-910 Series User manual

Rev. Issued
Japan CBM Corporation
Information Systems Div.
Service Manual
Model : CBM-910

CBM-910 Service Manual
CITIZEN 2
Contents
1. How to remove the Upper Cover............................................................................................................................3
2. How to remove the Printer Mechanism..................................................................................................................3
3. How to remove the Control Board .........................................................................................................................4
4. How to remove the Paper Holder...........................................................................................................................4
5. How to remove the Operation Panel.......................................................................................................................5
6. How to remove the Paper Hook .............................................................................................................................5
7. Parts List : Exploded View CBM-910....................................................................................................................6
8. Exploded View : CBM-910....................................................................................................................................7
9. OP Panel Parts Position : CBM-910-PF/RF...........................................................................................................9
10. OP Assy Schematic Diagram : CBM-910-PF/RF...............................................................................................10
11. Parts List : Control Board Assy CBM-910-RF...................................................................................................11
12. Parts Position : CBM-910-RF.............................................................................................................................14
13. Parts List : Control Board Assy CBM-910-PF...................................................................................................15
14. Parts Position : CBM-910-PF.............................................................................................................................18
15. Schematic Diagram CBM-910-RF.....................................................................................................................19
16. Schematic Diagram CBM-910-PF......................................................................................................................20

CBM-910 Service Manual
CITIZEN 3
1. How to remove the Upper Cover
(1) Unfasten 2 screws M3x8 on the Bottom Cover.
(2) Lift the Upper Cover in the arrow direction removal.
(3) Unfasten 2 screw, The Printer Mechanism mounting screw, Then remove the Shield Plate from
the Printer Mechanism.
(4) Disconnect the 2 Connectors from the Control Board.
2. How to remove the Printer Mechanism
(1) Remove the Upper Cover.
(2) Unfasten 4 screws M2.6x8 and M2x6 as shown below.
(3) Lift the Printer Mechanism in the arrow direction.

CBM-910 Service Manual
CITIZEN 4
3. How to remove the Control Board
(1) Remove the Upper Cover.
(2) Unfasten 2 screws M3x8 as shown below.
(3) Shift the Control Board in the arrow direction (1).
(4) Shift the Control Board in the arrow direction (2). and remove the Power Switch from the Bottom Cover.
Then lift in the arrow direction (3).
Remove the shield Plate together with the Control Board.
4. How to remove the Paper Holder
(1) Remove the Printer Cover.
(2) Unfasten a screw as shown below.

CBM-910 Service Manual
CITIZEN 5
5. How to remove the Operation Panel
(1) Remove the upper Cover.
(2) Unfasten 2 screws M2.6x6 as shown below.
6. How to remove the Paper Hook
(1) Remove the Printer Cover.
(2) Release a Lock Hook as shown below and lift the Paper Hook to the upside.
(3) When you set this Lock Hook, set the side of Hook to the Upper Cover. and according to the guide,
inset the Lock Hook until this is locked completely.

CBM-910 Service Manual
CITIZEN 6
7. Parts List : Exploded View CBM-910
PARTS LIST CBM910-PF / -RF
EXPLODED VIEW
Ref. No. Parts No. Description Q'ty
1E 62010670 Top Case 1
2E 5200-220 OP Sheet 1
3MD910 Printer MD910 <1>
MD911 Printer MD911 <1>
4E 4000-850 OP assy 1
6E 4000-990 PE assy 1
11 E 6611-405 Paper Hook 1
15 E 62020140 Bottom Case 1
16 E 6302-290 Foot 2
18 E 4035-720 Scheild Plate 1
19 E 4035-730 Ground Sheet 1
20 E 70010700 PCB assy CBM910-PF <1>
E 70010710 PCB assy CBM910-RF <1>
E 70010711 PCB assy CBM910-RF-UL <1>
24 E 62040170 Printer Cover 1
25 E 62040180 Printer Cover -H <1>
34 76G23760 Screw M2x6 1
35 76G22839 Screw M2.6x8 2
37 76G40207 Screw M3x10 2

CBM-910 Service Manual
CITIZEN 7
8. Exploded View : CBM-910

CBM-910 Service Manual
CITIZEN 8
PARTS LIST CBM-910-PF / -RF
OP ASSY
Ref. No. Parts No. Description Q'ty
LED 1, 2 E 480-290 LED SEL2310E 2
SW 1, 2 E 5102-430 SWITCH SKHHAN 2

CBM-910 Service Manual
CITIZEN 9
9. OP Panel Parts Position : CBM-910-PF/RF

CBM-910 Service Manual
CITIZEN 10
10. OP Assy Schematic Diagram : CBM-910-PF/RF

CBM-910 Service Manual
CITIZEN 11
11. Parts List : Control Board Assy CBM-910-RF
PARTS LIST CBM-910-RF
CONTROL BOARD ASSY (910-01)
Ref. No. Parts No. Description Q'ty
IC 1
E 107-250 CPU UPD78C10AGF-3BE 1
2E 107-260 EP-ROM M27C256-15F1 1
3E 107-210 S-RAM LC3664L-10 / 12 1
4E 201-930 C-MOS TC74HC373P 1
5, 6 E 2010130 C-MOS TC74HC04P 2
7E 2010100 C-MOS TC74HC00P 1
8E 202-910 Reset IC PST520F 1
9E 2010040 I / F IC MAX232CPE 1
TA 1, 2 E 390-413 Tr. Array STA-413A 2
TR 1, 5, 7 E 359-278 Tr. 2SC2785HF 7
11, 12, 16 (E 359-090) (2SC1740SR)
17
2, 13 E 379-060 Tr. 2SD1802ST 2
3, 10 E 319-117 Tr. 2SA1175HF 2
(E 319-090) (2SA9335)
4E 327-070 Tr. 2SB1202ST 1
6E 379-070 Tr. 2SD1817 1
15 E 359-100 Tr. 2SC4685 1
D 1, 2 E 400-220 Diode 1S1554 2
4, 6 E 400-270 Diode 1S1588 2
5E 400-110 Diode G2B 1
ZD 1E 413-033 Z. Diode RD13EB2 1
2, 3 E 405-130 Z. Diode RD5.6EB2 2
(MTZT-72-5.6B)
OSC 1
E 501-340 OSC CSA11.0MTZ020 1
(11.0592MHz)
R 1, 3, 4, 6 E 3103-041 Re. 1/ 4W 10K J10
14, 21, 22
25, 26, 28
24, 27
2, 5, 7 E 3471-041 Re. 1 / 4W 470 J5
24, 31
8, 13, 18 E 3331-041 Re. 1 / 4W 330 J4
19

CBM-910 Service Manual
CITIZEN 12
PARTS LIST CBM-910-RF
CONTROL BOARD ASSY (910-01)
Ref. No. Parts No. Description Q'ty
R 9, 17 E 3102-041 Re. 1 / 4W 1K J2
10, 27, 30 E 3332-041 Re. 1 / 4W 3.3K J3
15, 16, 29 E 3473-041 Re. 1 / 4W 47K J3
20 E 3472-041 Re. 1 / 4W 4.7K J1
23 E 3152-041 Re. 1 / 4W 1.5K J1
C 1E 2010-150 El. Cap. 50JS-1uF 1
11, 13, 15 E 2010-605 El. Cap. 25JS-10uF 6
20, 21, 22
12, 14 E 2022-870 El. Cap. 25JS-22uF 2
18, 19 E 2047-520 El. Cap. 25JS-4.7uF 2
C2, 3, 5 E 2110-040 C. Cap. F26Y5R1H102M0 4
16
6, 7 E 2130-010 C. Cap. F26SL1H300K0 2
8, 9, 10 E 2147-160 C. Cap. F26SL1H471K0 7
17, 29, 30
31
23, 24, 25 E 2110-845 C. Cap. RPE132F104Z25 6
26, 27, 28
RA 1, 5 E 3500-040 Re. Array M9-1-103J 2
2, 3 E 3681-050 Re. Array M8-3-681J 2
4E 3500-090 Re. Array M7-1-103J 1
DS 1E 5103-350 Dip SW. KSD-8 1
CN 1E 48000490 Connector MOJ-D14 1
2E 4800-925 Connector 5267-17A-X 1
3E 48000480 Connector 17LF13250-27 (D3AB) 1
for EUR.
E 48000485 Connector 17LE13250-27 (D3CB) 1
for USA
4E 48000650 Connector 5267-06A-X 1
6E 4800-950 Connector 5267-03A-X 1
F 1
E 4005-590 Fuse 5ST2A 1
E 4006-220 Fuse Holder UF-0033#01 2
L 1
E 4009-380 OSC coil SC-03-05GS 1

CBM-910 Service Manual
CITIZEN 13
PARTS LIST CBM-910-RF
CONTROL BOARD ASSY (910-01)
Ref. No. Parts No. Description Q'ty
SW 1E 5105-330 Slide SW. SN-20202-1218 1
76G42141 Screw M3x8 (B-567) 2
(for Tr. Heat sink)
76G30113 Screw M3x8 (B-506) 2
(for Connector) 2
E 4010-410 Heat sink 50-0079 1
PARTS LIST CBM-910-RF
CONTROL BOARD ASSY, Paper Winder (Option)
Ref. No. Parts No. Description Q'ty
TR 8E 359-278 Transistor 2SC2785HF 1
9E 379-060 Transistor 2SD1802ST 1
D 3
E 400-220 Diode 1S1554 1
C 4
E 2010-150 El. Cap. 50JS-1uF 1
R 11 E 3103-041 Re. 1 / 4W 10K J1
12 E 3471-041 Re. 1 / 4W 470 J1
CN 5E 4800-940 Connector 5267-02A-X 1

CBM-910 Service Manual
CITIZEN 14
12. Parts Position : CBM-910-RF

CBM-910 Service Manual
CITIZEN 15
13. Parts List : Control Board Assy CBM-910-PF
PARTS LIST CBM-910-PF
CONTROL BOARD ASSY (910-02)
Ref. No. Parts No. Description Q'ty
IC 1
E 107-250 CPU UPD78C10AGF-3BE 1
2E 107-260 EP-ROM M27C256B-15F1 1
3E 107-210 S-RAM LC3664L-10 / 12 1
4, 11 E 201-930 C-MOS TC74HC373P 2
5, 6 E 2010130 C-MOS TC74HC04P 2
7E 2010100 C-MOS TC74HC00P 1
8E 202-910 Reset IC PST520F 1
9E 2010321 C-MOS TC74HC74P 1
10 E 202-811 TTL 7404 1
TA 1, 2 E 390-413 Tr. Array STA-413A 2
TR 1, 5, 7 E 359-278 Tr. 2SC2785HF 5
11, 12 (E 359-090) (2SC1740SR)
2, 13 E 379-060 Tr. 2SD1802ST 2
3, 10 E 319-117 Tr. 2SA1175HF 2
(E 319-090) (2SA9335)
4E 327-070 Tr. 2SB1202ST 1
6E 379-070 Tr. 2SD1817 1
15 E 359-100 Tr. 2SC4685 1
D 1, 2 E 400-220 Diode 1S1554 2
4, 6 E 400-270 Diode 1S1588 2
5E 400-110 Diode G2B 1
ZD 1E 413-033 Z. Diode RD13EB2 1
2, 3 E 405-130 Z. Diode RD5.6EB2 2
(MTZT-72-5.6B)
OSC 1E 501-340 OSC CSA11.0MTZ020 1
(11.0592MHz)
R 1, 3, 4, 6 E 3103-041 Re. 1 / 4W 10K J8
14, 21, 22
26
2, 5, 7 E 3471-041 Re. 1 / 4W 470 J5
24, 27
8, 13, 18 E 3331-041 Re. 1 / 4W 330 J4
19
9, 17 E 3102-041 Re. 1 / 4W 1K J2
10 E 3332-041 Re. 1 / 4W 1.3K J1

CBM-910 Service Manual
CITIZEN 16
PARTS LIST CBM-910-PF
CONTROL BOARD ASSY (910-02)
Ref. No. Parts No. Description Q'ty
R15,16,29 E 3473-041 Re. 1 / 4W 47K J3
20 E 3472-041 Re. 1 / 4W 4.7K J1
23 E 3152-041 Re. 1 / 4W 1.5K J1
C 1E 2010-150 El. Cap. 50JS-1uF 1
11, 13, 15 E 2010-605 El. Cap. 25JS-10uF 3
12, 14 E 2022-870 El. Cap. 25JS-22uF 2
C 2, 3, 5 E 2110-040 C. Cap. F26Y5R1H102M0 5
17, 18
6, 7 E 2130-010 C. Cap. F26SL1H300K0 2
8, 9, 10 E 2147-160 C. Cap. F26SL1H471K0 7
16, 25, 25
27
19, 20, 21 E 2110-845 C. Cap. RPE132F104Z25 6
22, 23, 24
RA 1E 3500-040 Re. Array M9-1-103J 1
2, 3 E 3681-050 Re. Array M8-3-681J 2
4E 3500-090 Re. Array M7-1-103J 1
5E 3500-050 Re. Array M5-1-103J 1
6E 3500-080 Re. Array M9-1-332J 1
7E 3500-100 Re. Array M7-1-332J 1
8, 9 E 3500-110 Re. Array M8-3-472J 2
DS 1E 5103-470 Dip SW. KSD-4 1
CN 1E 48000490 Connector MOJ-D14 1
2E 4800-925 Connector 5267-17A-X 1
3E 48000680 Connector 57LE-40360-730B 1
(D12)
4E 48000650 Connector 5267-06A-X 1
5E 4800-950 Connector 5267-03A-X 1
F 1
E 4005-590 Fuse 5ST2A 1
E 4006-220 Fuse Holder UF-0033#01 2
L 1
E 4009-380 OSC coil SC-03-05GS 1
SW 1
E 5105-330 Slide SW. SN-20202-1218 1

CBM-910 Service Manual
CITIZEN 17
PARTS LIST CBM-910-PF
CONTROL BOARD ASSY (910-02)
Ref. No. Parts No. Description Q'ty
76G42141 Screw M3x8 (B-567) 2
(for Tr. Heat sink)
76G30113 Screw M3x8 (B-506) 2
(for Connector) 2
E 4010-410 Heat sink 1
PARTS LIST CBM-910-PF
CONTROL BOARD ASSY, Paper Winder (Option)
Ref. No. Parts No. Description Q'ty
TR 8E 359-278 Transistor 2SC2785HF 1
9E 379-060 Transistor 2SD1802ST 1
D 3E 400-220 Diode 1S1554 1
C 4E 2010-150 El. Cap. 50JS-1uF 1
R 11 E 3103-041 Re. 1 / 4W 10K J1
12 E 3471-041 Re. 1 / 4W 470 J1
CN 5E 4800-940 Connector 5267-02A-X 1

CBM-910 Service Manual
CITIZEN 18
14. Parts Position : CBM-910-PF

CBM-910 Service Manual
CITIZEN 19
15. Schematic Diagram CBM-910-RF

CBM-910 Service Manual
CITIZEN 20
16. Schematic Diagram CBM-910-PF