Ricoh FT8982, FT680 Technical Bulletin

Technical Bulletin No. RTB-001

SUBJECT: Dirty Background After Power up DATE:August 31, ’95

PAGE: 1 of 2

PREPARED BY: M. Mimura
CHECKED BY:

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

During our on-going laboratory test, we observed a symptom which may occur in the field
as the MIF grows. The following describes the details of the problem and the action to be
taken.

< Symptom >

Dirty background on the initial one to five copies after the five minute fusing idling after
power on.

< Cause >

When the oil supply roller is not hot enough just after the fusing idle mode (cold start), the
paper dust (colored black as it is mixed with toner) on the oil supply roller moves to the hot
roller and accumulates. This paper dust sticks onto the paper, giving the copy dirty
background.

Revision of service manual
Information only
Other

FROM: 2nd Technical Support Section

MODEL:

Thunderbird II

This symptom tends to occur with paper containing more calcium carbonate after more
than 50K copies usage of the oil supply roller.

< Objective Units >

The units with the following serial numbers have SP 10 4-3 set to SET at the factory.

Q’ty Serial Number
A171 - 10 0 N/A
A171 - 15 0 N/A
A171 - 17 0 N/A

A171 - 22 28

A171 - 27 59

9275070001 → 21
9275080001 → 07
A3875070057 → 85
A3875080001 → 30

Technical Bulletin No. RTB-001

SUBJECT: Dirty Background After Power up DATE:August 31, ’95

PAGE: 2 of 2

< Action to be taken >

Change SP 10 4-3 from SET to RESET to disable the fusing idle mode. Because
changing the SP mode setting has proven not to create the problem and there are no side
effects, you should change the SP mode setting on all field machines.

< Service Manual Correction >

The default setting of SP 10 4-3 is RESET. Please correct your Service Manual.

* Default setting: The setting that the ROM selects when the RAM clear is performed.

Technical Bulletin No. RTB-002

SUBJECT: Stack-feed from the LCT DATE: December

15, ’95
PAGE: 1 of 2

PREPARED BY: M. Mimura
CHECKED BY:

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

<Symptom>

Stack-feed tends to occur from the optional LCT.

<Cause>

Paper at feeding is positioned higher than the center portion of the tray side fence, which
is to prevent multiple sheets of paper from being delivered to the feed / separation rollers.

<Action to be taken in the field>

Check and adjust the paper height as follows:

1. Detach the LCT from the copier.

2. Remove the top cover to expose the feed section.

3. Reattach the LCT to the copier.

4. Lower the paper stack by pressing the tray button. Then, pull out and push in the tray
to raise the paper stack back to the feed position.

Revision of service manual
Information only
Other

FROM: 2nd Technical Support Section

MODEL:

Thunderbird II

5. Feed ten sheets from the LCT.

6. Insert a ruler (or a similar flat object) [A] between the paper and the feed roller and
confirm that it contacts the center portion (paper separation) of the side fence.

Center Portion

[A]

Tray Side Fence

7. If the ruler does not hit the center portion of the tray side fence, do the following steps.

8. Roughly measure how much the paper is higher than the fence.

Technical Bulletin No. RTB-002

[C]

SUBJECT: Stack - feed from LCT DATE: December

15, ’95
PAGE: 2 of 2

9. Remove the securing screw [B]. Note: This screw will not be used after the adjustment.

10. Loosen the securing screw [C] and adjustment screw [D] to free the sensor adjustment
plate [E].

11. Position the sensor adjustment plate to offset the excessive height.

12. Tighten the securing screw [C] and adjustment screw [D].

[E]

[B]

[D]

13. Feed paper while checking the paper height. If it is still too high or too low, repeat the
adjustment. (Adjustment target: 0 to 1.5 mm below the center part of the fence)

If the adjusting plate does not bring the paper below the fence, atach the sensor feeler
mylar [E] (#A3359500) to the upper limit sensor actuator as illustrated.

Note: Align the cut-out part [F] of the mylar with the actuator edge so that the actuator is

extended by 1 mm.

1mm

[F]

[E]

<Factory Action>

This adjustment is to be incorporated into the production line from the January ’96
production run.

Technical Bulletin No. RTB-003

SUBJECT: 1. Required Action for Energy Star Compliant Machines

(North American versions only)

2. Mode Change in Tab Copying (All versions)

PREPARED BY: M. Mimura

FROM: 2nd Technical Support Section

DATE: February
29, ’96
PAGE: 1 of 4

CHECKED BY:
CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Revision of service manual
Information only
Other

MODEL:

Thunderbird II Type Y

1. Energy Star

In conjunction with the modification for Energy Star compliance. This is information for
field technicians so they can make the changes in the operation modes so as to configure
the machine for the customer specific environment / requirements. This bulletin refers to
all differences between the Energy Star compliant machines and the other machines
previously produced.

Mode Current Energy Star

Auto Off Mode When the copier is used after the weekly

timer has turned it off, the copier will turn
itself back off after the set time.
The auto off time can be set from 1 to 180
minutes, or the function can be turned off.
Default: 1 hour

Simplex / Duplex
Mode

Weekly Timer Available Because the auto off mode is a standard

SC Code N / A A new SC code # 940 has been added.

Single sided original to single sided copy is
default setting mode at the factory.

The copier turns itself off after the set time
(after the last copying job).
The time can be set from 1 to 120
minutes. This mode cannot be canceled.
Default: 90 minutes

Single sided original to two sided copy is
the default setting mode at the factory.

feature of Energy Star, the weekly timer is
no longer available.

Definition : The main switch does not turn

off after sending the reset signal
two times in a row.

Point to check : • Main Switch

• Main PCB

Because the auto off mode and default duplex mode are explained in the Operating
Instructions, make sure that the customer understands how the machine operates to save
energy.

NOTE: The Thunderbird II type X has complied with the Energy Star requirements from

the first mass-production.

Technical Bulletin No. RTB-003

SUBJECT: 1. Required Action for Energy Star Compliant Machines

(North American versions only)

2. Mode Change in Tab Copying (All versions)

DATE: February
29, ’96
PAGE: 2 of 4

For the cut-in serial numbers, please refer to MB #13.

2. Tab Copy Mode
A function to adjust the print position for tab copying has been added.
(See the attached copy from the Operating Instructions.)

NOTE:

This function was available on the Thunderbird ΙΙ type X from the first
mass-production.

Technical Bulletin No. RTB-003

SUBJECT: 1. Required Action for Energy Star Compliant Machines

(North American versions only)

2. Mode Change in Tab Copying (All versions)

DATE: February
29, ’96
PAGE: 3 of 4

This value adjustable

Technical Bulletin No. RTB-003

SUBJECT: 1. Required Action for Energy Star Compliant Machines

(North American versions only)

2. Mode Change in Tab Copying (All versions)

DATE: February
29, ’96
PAGE: 4 of 4

REVISED ON: MARCH 15, ’96

Technical Bulletin No. RTB-004

SUBJECT: Supplemental software upgrade information DATE: February

29, ’95
PAGE: 1 of 1

PREPARED BY: M. Mimura

FROM: 2nd Technical Support Section

CHECKED BY:
CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Revision of service manual
Information only
Other

MODEL:

Thunderbird - II

This RTB introduces minor software modifications applied to the new version ROM in MB
#13. Primary software modifications were introduced in RTB # 003.

Title Change

Dirty background Some copies with a dirty background had appeared when making

ADS copies in SP mode. This was because the lower bias limit had
been eliminated to facilitate factory adjustment. A lower bias has

now been restored to correct this problem per field request.
Combining tab and
staple modes
Designated page
copying restriction
A2 Copying (-22, -26,

- 27 versions only)

Selecting tab copying and staple copying at the same time has been

disabled.

Designated page copying onto tab sheets has been disabled in the

platen and SADF modes.

A3 double count mode (SP Special Feature P. 6-6) has been

changed as follows: Reset Set

Set Paper Size A3 A2 A3 A2

==================================================

Total Counter 1 1 → 222 → 4

A3 Counter 1 1 → 211 → 2

I
I
I
I
I
I

OHP slip sheet mode UP mode #4 [Select Special Modes]

In OHP slip sheet mode, blank slip sheets are added by default. If a

customer selects this feature, copies are made onto the slip sheets.

Default: No
Inverter pinch roller
solenoid

The energizing of the inverter pinch roller solenoid timing has been

changed from 40 to 20 ms after the paper passes through the fusing

sensor. This is a timing optimization for tab sheet copying.
Side to side
registration

After finishing the interrupt copying, the lens did not return to the

position where the lens was before the interruption.

Example:

DF mode copying -> Interrupt -> Platen mode copying (lens moves)

-> Leave Interrupt -> DF mode copying (lens stays in the platen

mode position)

This malfunction has been corrected.

For part number and cut-in serial number information, refer to MB # 13.