Citizen CBM1000 service manual Printing failure

CBM1000 Service Manual

l Printing failure

Phenomenon

Cause

Check Method

Remedy

No printing

Faulty DC output volt-

Check

whether

the

Use

the

specified

AC

age

from

the

AC

specified AC adapter is

adapter.

adapter

used.

Faulty control PCB assy

Replace the control PCB

assy.

Faulty connection of the

Check connection of the

Connect

the

thermal

thermal head connector

thermal head connector.

head

connector

prop-

erly.

Or

replace

the

head cable assy.

Faulty thermal head

Replace

the

thermal

head.

Partly not printed

Faulty connection of the

Check connection of the

Connect

the

thermal

thermal head connector

thermal head connector.

head

connector

prop-

erly.

Or

replace

the

head cable assy.

Faulty thermal head

Replace

the

thermal

head.

Faint printout or

Faulty DC output volt-

Check

whether

the

Use

the

specified

AC

uneven printout

age

from

the

AC

specified AC adapter is

adapter.

adapter

used.

Low DC output voltage

Check

the DC voltage

Supply the specified AC

from the AC adapter

with a DC voltmeter.

voltage

to

the

AC

adapter.

Faulty thermal head

Replace

the

thermal

head.

Foreign substance

is

Check whether any for-

Dip a cotton swab or

adhered to the thermal

eign

substances

are

soft cloth in ethyl alco-

head.

adhered to the thermal

hol and wipe the foreign

head.

substances with them.

Non-recommended pa-

Check whether the pa-

Replace

it

with

the

per is used.

per being used

meets

specified paper.

the specification.

Faulty mounting of the

Check mounting condi-

Mount the platen roller

platen roller

tion of the platen roller.

properly.

– 20 – CITIZEN