SHARP SP1705 Technical Report

Date: Feb. 23, 1994

COPIER : Z-20

No. : SP-1705

[Parts change information]

CHANGE IN PARTS (Z - 20 SERIE S):

1. CHANGE IN SCREWS IN THE POWER SUPPLY CIRCUIT BOARD.

2. CHANGE IN SPARK KILLER IN THE MAIN CIRCUIT BOARD AND THE POWER SUPPLY CIRCUIT BOARD
(100V SERIES).

3. CHANGE IN CPU IN THE MAIN CIRCUIT BOARD.

4. CHANGE IN DRUM FRONT ROLLOR.

5. CHANGE IN OR COVER.

6. ADDITION OF FUSE PROTECTIO N MYLA R TO THE POWER SUPPLY CIRCUIT BOARD (200 V SERIES).

1.Model name: Z-20 / 23 / 25

2.General: The parts changes described below have been carried out on the Z-20 Series, and are

hereby reported.

3.Description: 1. Change in screws in the power supply PWB.
The fastening screws of the three terminal regulator have been changed from M3 x 8
to M3 x 6. Corrections should be made in the parts guide.

XHPSD30P08K00 → XHPSD30P06K00 Q’ty :1
(M3 x 8) (M3 x 6)

(Factory action)

From first lot production.

2. Change in spark killer in the main PWB and the power supply circuit board. (100V
Series)
The maker of the spark killer has been changed to increase productivity.
Main circuit board: CR201 RMPTA0030FCZZ →RMPTA0031FCZZ (Q’ty: 1)
Power supply circuit board: CR101 RMPTA0030FCZZ →RMPTA0031FCZZ (Q’ty: 1)

(Factory action)

From 1994 April production.

3. Change in CPU in the main PWB.
The One-time version of the CPU has been changed to a Mask version, and the
interchangeable CPU has been changed so that the CPU for the Z-20 and the CPU
for the Z-23 / 25 models are separate. (Interchangeable CPUs used were originally
considered, but there were some problems when using them in the Z-20, and the
CPU for use in this model was redesigned to eliminate the problems.

SHARP CORPORATION Reprography Division

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