BH-C-284e/364e, Warm-up

[Hansoon]

Guys, which "Warm-up" setting do you advise generally for the BH-C-284e/364e series?

System1>Warmup, Mode 1, 2, 3 or 4?

Hans

[xender79]

Countries with winter and summer are 3-4

[femaster]

My company has never changed the setting from the default, which is Mode 1. Here is what the service manual states about each setting. Essentially, the higher the number, the slower it is to warm up.

Mode1 (Default)	It makes the warm-up time for black print shortest.
Mode2	The warm-up time for both black and color will be as specified value.
Mode3	To prevent curling of the paper immediately after the warm-up, printing productivity is decreased by PPM control.The warm-up time will be as specified for both black and color.
Mode4	By having a longer warm-up time and warming up the fusing unit, curling of the paper immediately after the warm-up can be prevented. The warm-up period of time will be 65 seconds or under.

EDIT: Just noticed this was an old post brought back from the dead by somebody...

[Hansoon]

Still for me confusing.

What to choose for a customer who prints almost only B/W but is facing with the first prints in the morning, jams because the paper is curling when just entering the fuser.

Who cares about image stabilization as mentioned in the manual, when only one thing is important: Paper at least running through the machine without jams.

Hans

[femaster]

Below is a table pulled from the service manual that has a bit more detail for curling issue right after morning warm-up. It seems to involve two different settings, warn up and humidity circumstance.
The humidity setting is controlled in the ENGINE FW DipSW settings. Switch number 5, Choice of high humidity circumstance.

Warm Up
Use

• To change warm up completion time.
• Mode is changed to Mode 2 in case the paper gets curled significantly when black printing is conducted immediately after warm up at
Mode 1.
• Mode is changed to Mode 3 or 4 in case the paper gets curled immediately after normal warm up or the curled paper causes paper jam,
paper exit failure, punch/staple/fold position failure or etc.

Choice of high humidity circumstance

• Out of PPM control for preventing the paper from losing its fusibility, "high humidity circumstance mode" which controls paper curling in
high humidity is prohibited.
• When this setting is ON, high humidity circumstance mode for PPM control will not be conducted.

Procedure

1. Touch [Service Mode] -> [Enhanced Security] -> [Engine FW DipSW].
2. Touch [5] and check the key is highlighted (ON state) in reverse video.
3. Touch [OK].

Fusing operation mode

• Warm-up related control can be changed by using [Warm Up] setting and [Choice of high humidity circumstance] setting.
When the main power switch is turned on, the mode is defined according to each choice setting.
• The following table shows the features of each operation mode.

Operation mode	Service Mode - Warm Up Setting	Service Mode - Humidity Circumstance Setting	Target User	Advantages	Disadvantages
1 (Default)	Mode 1	OFF	• Black usage rate is high • want to print quickly	Makes warm-up time for black shortest	Curling may occur in high humidity
2	Mode 1	ON	• Black usage rate is high • want to prevent curling	• Warm-up time for black is made shortest except when in high humidity • Decreases possibility curling occurs in high humidity	Warm-up time is long in high humidity (65 seconds or later)
3	Mode 2	OFF	• want to print quickly • color usage rate is high	• Warm-up time is as specified value or later • High productivity even in high humidity	Curling may occur in high humidity
4	Mode 2	ON	• color usage rate is high • want to prevent curling	• Warm-up time is as specified value or later except in high humidity • Decreases possibility curling occurs in high humidity	Warm-up time is long in high humidity (65 seconds or later)
5	Mode 3	OFF	• want to print quickly • want to prevent curling immediately after warm-up	• Warm-up time is as specified value or later • Decreases the curling in normal circumstance	• Productivity immediately after warm-up decreases • Curling may occur in high humidity
6	Mode 3	ON	• want to prevent curling immediately after warm-up • want to print quickly • want to prevent curling when humidity is high	• Warm-up time is as specified value or later • Decreases possibility curling occurs	• Productivity immediately after warm-up decreases • Warm-up time is long in high humidity (65 seconds or later)
7	Mode 4	OFF or ON	Want to prevent curling immediately after warm-up	Decreases possibility curling occurs	Warm-up time is long (65 seconds or later)