Read Sharp ER-A770 (serv.man25) Technical Bulletin online
Service Information
CASH REGISTER: ER-A770
No. : CR-A189
Date : Dec. 26, 2001
System Equipment Division
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SHARP CORPORATION
UPGRADE OF ROM VERSION.
1.Model Name:
ER-A770 (Version U/A/V)
2.General:
The ROM version will be upgraded for revising the diag programs.
3.Description:
Errors in the diag test on the RS232 may occur due to the varied propagation delay of the
RS232 transceivers.
To eliminate this phenomenon, we are upgrading the ROM version.
(Before Change)
(After Change)
Destined for North America
RAJ1A/RAK1A
RAJ1B/RAK1B
Destined for Europe
RAN1B/RAO1B
RAN1C/RAO1C
4.Action:
For the field:
The change is made in the diag program. No action will be required for the field. When
offering services including replacement of a transceiver IC, it is recommended that you
use the latest version of the diag for conducting checks.
For production:
From June 2001 production.
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5.Parts Action:
Current parts
New parts
Ref.
No.
Model
name
Version P/G No.
Parts code
Parts code
Price
rank
Parts name
Effective
time
Inter-
change-
ability
Note
VHI27801RAJ1A
VHI27801RAJ1B
ROM
U/A
VHI27801RAK1A
VHI27801RAK1B
ROM
VHI27801RAN1B
VHI27801RAN1C
ROM
1
ER-A770
V
---
VHI27801RAO1B
VHI27801RAO1C
BS
ROM
2001/6
3
<Interchange>
1. Interchangeable.
4. Not interchangeable.
2. Current type can be used in place of new type.
New type cannot be used in place of current type.
5. Interchangeable if replaced with same types of
related parts in use.
3. Current type cannot be used in place of new type.
New type can be used in place of current type.
6. Others.
Parts marked with "
" is important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
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