Ricoh G056 Biuletyn techniczny - Strona 38

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Model:

General RTB

Subject:

GW Products - Hardware Ethernet Problem

From:

Technical Services Sec. Service Planning Dept.

Classification:

Troubleshooting

Mechanical

Paper path

Other (

SYMPTOM

When the main switch is turned on, the error message "Hardware Ethernet Problem" may

be displayed under the following condition on the GW-based products.

Conditions:

• Network speed on the hub has been set to 100Mbps fixed with full duplex, and

• Length of network cable is too long (60 m or more) or the cable quality is not good

enough

CAUSE

When the main switch is turned on, the machine performs a loop-back test. If the cable

length is too long or its quality is not good enough, the damping factor for the data

transmission becomes worse, and the machine incorrectly detects an error during this test.

This happens only when the network speed is set to 100Mbps fixed with full duplex. The

PHY chip used on the controller board causes this.

SOLUTION

- Temporary Solution -

• Set the network speed on the hub to Auto-sensing,

• Use a shorter cable or a cable with a lower damping factor, or

• Disconnect the network cable and power on the printer; then, set the cable after the

printer comes to the ready condition.

- Permanent Solution -

The controller firmware will be modified to avoid the incorrect detection of this error

message. The schedule of firmware modification is as follows.

Product Type

Product

Fax

Kaiser 3

Printer

Model-K P1

Model-K P2

Model-J P1b

Model-J CF

Model-U P1e

Model-A P3

MFP

Model-R C2

Model-A C2

Model-M C1

Model-U C1

echnical

Part information

Electrical

Transmit/receive

)

Firmware Modification

Cut-in Schedule

at next modification

'03 January production run

'03 March production run

at next modification run

'03 February production run

ulletin

Date:

27-Dec-02

Prepared by:

T. Itoh

Action required

Service manual revision

Retrofit information

NOTE:

Firmware will be

posted in the usual

manner when it is

released.

PAGE: 1/1

No.:

RGene012