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CBM-920 Service Manual

5 -

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1. Remove a shield cover.

(1) Insert a regular screwdriver into

a slot in the top(or bottom) of the
shield cover.

(2) Raising the end of the regular

screwdriver, remove the shield
cover.

2. Remove a control board.

(1) Using a Phillips screwdriver,

loosen an earthing plate
setscrew(PHT, M2.6 X 8) and FG
cable setscrew(PHT, M2.6 X 8).

(2) Using the Phillips screwdriver,

loosen two screws(M2.6 x 8)
fixing an inner board.

(3) Disconnect a connected from the

board.

(4) Remove an insulating sheet.

3. Remove the front covers(upper and lower).

(1) Push out a roller pin from the

lower front cover(where the
printing paper comes out).

(2) Paying attention to a harness

projecting from the front cover,
remove the front cover.

Summary of Contents for CBM-920

Page 1: ...1998 Ja Ja Ja Jap p p pa a a an n n n C C C CB B B BM M M M C C C Co o o or r r rp p p po o o or r r ra a a at t t ti i i io o o on n n n I I I In n n nf f f fo o o or r r rm m m ma a a at t t ti i i...

Page 2: ...r CBM920 allowed to be built in a rack etc is widely available for various data communication terminals POS terminals measuring instrument terminals and so on This printer is designed small light weig...

Page 3: ...re 8 4 2 Trouble Shooting Guide 9 5 SERVICE PARTS LIST 10 5 1 Parts List for Mechanism 10 5 2 Disassembly Drawing 11 5 3 Parts List for Control Board 12 5 4 Parts Layout Drawing 14 5 4 1 Main PCB Assy...

Page 4: ...8 2 4mm Line Spacing 3 52mm Printing Paper Rolled paper 57 5 0 5 W x 50 D mm Core inner diameter 12 1 mm Interface Serial interface RS 232C or parallel interface CENTRONICS Input Buffer 2 KB Paper Nea...

Page 5: ...a slot in the top or bottom of the shield cover 2 Raising the end of the regular screwdriver remove the shield cover 2 Remove a control board 1 Using a Phillips screwdriver loosen an earthing plate se...

Page 6: ...assembly Remove a paper holder bracket from the front cover 1 Using the Phillips screwdriver loosen 4 screws M2 x 6 fixing the paper holder bracket 2 Remove an earth plate 2 and FG cable terminal 3 R...

Page 7: ...knob 2 Remove the knob Remove the rollers from the front cover 1 Pull out a roller pin from the front cover Remove a PE assembly from the front cover 1 Remove the PE assembly from the front cover 3 3...

Page 8: ...eshooting Guide and troubleshoot as described below Phenomenon Find a trouble phenomenon in this column If there are multiple phenomena take all the corresponding items into consideration This allows...

Page 9: ...onnect the connector correctly Faulty power supply Check whether a 5 V DC power capacity is sufficient Use the power source with a sufficient capacity Paper feed failure A printing paper feed motor do...

Page 10: ...233 020 E 6611 600 E 6233 050 E 6233 030 E 4035 780 E 5200 270 E 4035 770 E 40000140 E 4900 360 E 5102 450 E 480 330 E 40000150 E 4900 400 E 391 180 E 40000160 E 4900 370 E 391 110 E 4035 790 MD910 MD...

Page 11: ...CBM 920 Service Manual 11 CITIZEN 5 5 5 5 2 2 2 2 D D D Di i i is s s sa a a ass ss ss sse e e em m m mb b b bl l l ly y y y D D D Dr r r ra a a aw w w wi i i in n n ng g g g...

Page 12: ...02 910 E 210 110 E 2010040 E 210 080 E 210 100 E 393 010 E 348 040 E 379 060 E 327 070 E 379 070 E 358 060 E 390 280 E 400 590 E 501 380 E 5103 510 E 5103 530 E 4009 510 E 3900 500 E 3900 510 E 3900 5...

Page 13: ...210 E 3500 090 E 3500 040 E 3500 110 E 48000735 E 48000740 E 48000745 E 48000750 E 48000755 E 48000760 E 48000765 E 51060010 E 51060020 E 3900 480 E 3900 480 Ca Array CGSD8x101M Chip C Cap GRM40F103Z5...

Page 14: ...14 CITIZEN 5 5 5 5 4 4 4 4 P P P Pa a a ar r r rt t t ts s s s L L L La a a ay y y yo o o ou u u ut t t t D D D Dr r r ra a a aw w w wi i i in n n ng g g g 5 4 1 Main PCB Assy for CBM 920 PF Parallel...

Page 15: ...CBM 920 Service Manual 15 CITIZEN 5 4 2 Main PCB Assy for CBM 920 RF Serial Interface KJL 1 KJL 2...

Page 16: ...CBM 920 Service Manual 16 CITIZEN 5 4 3 Drawing for Jumper Lead...

Page 17: ...l 17 CITIZEN 6 6 6 6 D D D DR R R RA A A AW W W WI I I IN N N NG G G G The following lists the reference drawings for maintenance and so on Block Diagram Circuit Diagram For the serial interface For t...

Page 18: ...l 18 CITIZEN 6 6 6 6 1 1 1 1 C C C Ci i i ir r r rc c c cu u u ui i i it t t t 6 6 6 6 1 1 1 1 1 1 1 1 B B B Bl l l lo o o oc c c ck k k k D D D Di i i ia a a ag g g gr r r ra a a am m m m CBM 920 COV...

Page 19: ...M 920 Service Manual 19 CITIZEN 6 6 6 6 1 1 1 1 2 2 2 2 C C C Co o o ov v v ve e e er r r ra a a all ll ll ll W W W Wi i i ir r r ri i i in n n ng g g g D D D Di i i ia a a ag g g gr r r ra a a am m m...

Page 20: ...c c cu u u ui i i it t t t D D D Di i i ia a a ag g g gr r r ra a a am m m m 6 6 6 6 2 2 2 2 1 1 1 1 CB CB CB CBM M M M 9 9 9 92 2 2 20 0 0 0 PF PF PF PF P P P Pa a a ar r r ra a a all ll ll lle e e...

Page 21: ...BM M M M 920 920 920 920 R R R RF F F F S S S Se e e er r r ri i i ia a a al l l l I I I In n n nt t t te e e er r r rf f f fa a a ac c c ce e e e 5 5 5 5 S S S SE E E ER R R RV V V VI I I IC C C CE...

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