DPP-SV88 - Sony Other Service Manuals Service Manual (repair manual). Page 38

4-7

DPP-SV88 V1

Paper feed failure due to a wear of paper

Replace the K frame assembly.

feed mechanical block.

Paper is not set in the correct position of

Set paper in the correct position.

the paper feed tray.

Detection error of the PE sensor

Check the connection of the PE sensor connector.

Replace the PE-42 board.

Paper is not set in the correct position of

Set paper in the correct position.

the paper feed tray.

Detection error of the JD sensor

Check the connection of the JD sensor connector.

Replace the JD-42 board.

Paper is ejected as blank paper.

Mismatch between paper and ribbon

Use matching paper and ribbon.

Paper is torn off along perforation before
printing.

Jamming of ink ribbon or paper

Used ribbon was rewound and reused.

After removing the ink ribbon, replace the T-reel

occurs in the unit.

Printed paper was reused.

assembly (because the T-reel assembly may be

Ribbon cartridge cannot be

Paper other than specified was used.

damaged due to jamming).

removed.

Upgrade the firmware to the latest version.

Troubles resulting from specific parts

Refer to the technical memo

White spots or hitting traces

Foreign substance adheres to the roller.

Remove the mechanical deck block and perform the

appear at pitch intervals in the

cleaning of roller.

printing direction, etc.

18.8 mm interval: Pinch roller
20.4 mm interval: Capstan roller
37.7 mm interval: Platen roller
Remove the foreign substance adhered to the
capstan roller using a gummed tape, etc.
Remove the foreign substance adhered to the pinch
roller and platen roller using a cloth dampened with
ethanol.

White streaks or scratches

Foreign substance adheres to the surface

Remove the thermal head and remove the foreign

appear in the printing direction.

of thermal head.

substance adhered to the surface using a cloth
dampened with ethanol.

“No paper” is displayed although
the paper is set in the paper feed
tray.

Multiple sheets of paper are fed
and jammed as blank paper.

A sheet of paper is fed and
jammed in the unit as blank paper.