Sharp UP-700 Manuel de service télécharger pdf (Page 91)

(2) Unloading the paper

The paper can be unloaded in two ways.

Move the head up lever toward : Head up position and then pull

the paper out by hand in the forward direction (feeding direction)

or in the reverse direction.

Operate the paper feed keys to discharge the paper from the

printer. Move the head up lever to the head up position

and

remove the paper toward the front.

(Notes)

• Operations other than those listed above could cause im-

proper paper feeding and jamming, and could cause dam-

age to the head heating elements.

• Never pull the paper out without using the head up lever,

regardless of the direction, forward or reverse.

(3) Removing paper after a paper jam

If a paper jam occurs, follow the procedure below.

Put the head-up lever in the Cleaning position to widen the

spacing between the head and platen rollers so that you can

easily check for a paper jam.

Remove the jammed paper by hand.

Return the head-up lever in the Close position.

When a tool such as tweezers is used, take care not to touch the

heating elements of the head with the tool. The head is still hot after

printing is stopped. Please wait a while for the head to cool down

prior to cleaning a paper jam.

CHAPTER 4. MAINTENANCE

To maintain proper performance of the printer for a long period of

time and to prevent trouble, carry out the maintenance and manage-

ment procedures as follows.

1. Cleaning

• Removing stains

Wipe dirt off the head and platen rollers with a clean cloth satu-

rated with an alcoholic solvent (ethanol, methanol, IPA: Isopropyl

alcohol).

For cleaning the head assembly, refer to the daily checks section.

(Notes) Never use thinner, benzine, trichlene or ketone group sol-

vents since they may damage or deteriorate rubber and

plastic parts.

• Removing dust and lint

Cleaning by same form of suction (with a vacuum cleaner) is desir-

able.

(Note) Check lubrication at various points after cleaning.

2. Inspection

The maintenance and inspection items for the printer are divided into

2 types. One is "Daily checks" for the operater/manager who uses the

terminal, and the other is "Periodic checks" for someone with more

technical knowledge. Maintenance and inspections of the printer

should be carried out by properly qualified personnel.

(1) Daily checks

Check that the printer is used properly and kept in the good repair.

Daily check items

The specified paper is being used.

The paper has not become discolored.

Check print quality and if significant deterioration is found, clean

the head heating elements.

1) Place the head-up lever in the

: Cleaning position. Make sure it

is in the locked position.

2) Wipe the heating element of the head and platen rollers clean with

a soft cloth or cotton moistened with alcoholic solvent (ethanol,

methanol or IPA: isopropyl alcohol).

3) After making sure the alcoholic solvent has thoroughly evapo-

rated, undo the head-up lever and platen rollers in the

position.

If paper dust is attached to the platen roller surface, the paper

feeding power is reduced. Be sure to clean the platen roller sur-

face when cleaning the head.

The illustration shows the state when the PTcover is removed for

explanation purposes only.

Fig. Head and Platen roller cleaning

Cotton swab

Platen roller

Thermal head unit

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Sharp UP-700 Manuel de service Page 91

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