SHARP ETE297 Technical Report

Date: Aug. 22, 1994

ELECTRONIC TYPEWRITER: PA-4000

1.CHANGE OF THE PARTS FOR THE CARRIAGE UNIT AND
CORREC TIO N OF TH E PARTS CO DE OF T HE ROLLE R H OL DE R

2.CHANGE OF THE INNER STRUCTURE OF THE PLATEN

3. AD DI T ION O F TH E WH EE L CA SE

1. CHANGE OF THE PARTS FOR THE CARRIAGE UNIT AND CORRECTION OF THE
PARTS CODE OF THE ROLLER HOLDER

1) Model name: PA-4000 (for A, M, Q, EA)

Destination codes

No. : ETE-297

= Refer to the destination table in the parts guide for the above destinations.

2) General: Some parts of the carriage unit have been changed for better reliability and workability.

The parts code of the roller holder misprinted in the parts guide for Q and EA has been
corrected.

3) Description: [Change of the carriage unit]

(1) The material of the ratchet S has been changed for decreasing the contact noise at ribbon

feeding.

(Before changing) (Changed)

RATCHET S PTME-5018CHZA PTME-5018CHZB

(2) The mask CPU has been changed and the ratchet mechanism has been disused for better

reliability.

Description Before changing Changed
Mask CPU Change
RF drive gear Disuse NGERH5129CHZZ —

RF ratchet Disuse PTME-5019CHZZ —
RF gear spring Disuse MSPRD5206CHZZ —
RF gear Addition — NGERH5142CHZZ
Carriage unit Change CDAIH5037CH01 CDAIH5037CH04

VHIM38002-235
Version No. 235

VHIM38002-240
Version No. 240

SHARP CORPORATION

Printer and Scanner Division

1/4

Orange

C

RF ratchet disused

Gear spring disused

RF gear added

Carriage unit changed

(Before changing)

Changed material of the ratchet S

RF drive gear disused

[Roller holder]
The parts code of the roller holder misprinted in the parts guide has been corrected as follows.

(Before changing) (Changed)

Roller holder LHLDR5089CHZZ LHLDR5083CHZZ

(Changed)

4) Application Roller h older -------- -- From the Marc h prod uctio n in 1 994

Ratche t S ----- ---- ----- From the May prod uctio n in 1994
Ratchet mechanism - From the July production in 1994

2. CHANGE OF THE INNER STRUCTURE OF THE PLATEN

1) Model name: PA-4000, QL-310

2) General The inner structure of the platen has been changed to have regenerated rubber filled in the

iron pipe and new rubber rolled on it as shown below for better productivity.

New rubber

(Old platen)

(Improved platen)

The parts code remains unchanged as the old platen and the new one have interchangeability.

Regenerated rubber
Formed bush

Iron pipe

2/4

3) Application From the June production in 1994