Ricoh CH-C1 User Manual

Technical Bulletin PAGE: 1/1
Model: CH-C1
Date: 16-May-14
No.: RD135127
Subject: Engine F/W to improve waste toner bottle yield
Prepared by: Takeshi Toriumi
From: 1st MFP Tech Service Sec., MFP Tech Service Dept.,
Classification:
Troubleshooting
Mechanical
Paper path
Product Safety
Part information
Electrical
Transmit/receive
Other ( )
Action required
Service manual revision
Retrofit information
Tier 2
SYMPTOM
The yield of the waste toner bottle varies depending on the machine usage conditions (P/J, color
ratio, coverage, etc.), and sometimes the bottle may be replaced earlier than the expected yield.
CAUSE
Process control is automatically performed to maintain the image quality whenever the machine
recovers from Low Power mode, but tends to be triggered frequently if the machine is used under
unexpected conditions (e.g. low P/J).
SOLUTION
Production line:
The Engine firmware was modified to Ver.1.31.08, to optimize the Process Control timing.
Model
S/N
Model
S/N
D135-17
E234C400282
D136-17
E244C430082
D135-21
E234C620001
D136-21
TBA
D135-27
E234C430200
D136-27
E244C430082
D135-29
E234C450031
D136-29
E244C450027
Note:
 The activation timing was changed so that Process Control is performed only when the
machine has been in Low Power mode for at least 30 minutes when recovering.
 With this firmware, the toner bottle yield is increased by up to 10%, especially on machines
used under low P/J conditions.
 This change does not affect image quality.
In the field:
Upgrade the Engine firmware to Ver.1.31.08 or later at the next service visit.

Ricoh CH-C1 Specifications

General

Brand	Ricoh
Model	CH-C1
Category	Printer Accessories
Language	English