Ricoh A027 Technical Bulletin FT2260

Technical Bulletin No. RTB-006

SUBJECT: AC Drive Board Schematics DATE: Nov. 15, ’90

PAGE: 1 of 3

PREPARED BY: T. Itoh
CHECKED BY:

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

As a permanent countermeasure against electrical malfunction, three noise killers (CR402,
CR403, and CR404)) have been added to the ac drive board circuit. (For the detailed
information of the electrical malfunction, please refer to RTB No. 4.)

The schematics of the ac drive board have been changed as a result of this modification.
See the following pages:

Revision of service manual
Information only
Other

FROM: Copier Technical Support Sec.

MODEL: M210

Technical Bulletin No. RTB-006

SUBJECT: AC Drive Board Schematics DATE: Nov. 15, ’90

PAGE: 2 of 3

(For 115V version machines)

Zoom Voltage

CN407-1

C401

0.01
50V

CN407-2

GND

Exposure
Trigger

CN407-3

Main Motor
RA

CN407-4

CN407-5

+24V

TP402

R402

15K 9B2

µ

RA

402

R403

10K

TP403

ZD401 ZD402 D401

TP404

ZD403 ZD404

TP401

1/2W 2.2K

RA

401

R405

9C2

6B35B1

PC401
S22MD3

1S1588

R401

2.4K

TP405

DB401

1B4B42 TR401

R404

1/2W 100

DB402
1J4B42

Ω

TRC401

R406
82

CN406-1

JP403

115V

100V

JP402

CR401
AU1201

Ω

L401
250

µH64

C402

0.1
125V

JP408
JP409

CN406-2

JP405
JP406

µ

JP407

LAMP (H)

LAMP (N)

JP404

CR402

RA401-1

C

CR404

C

CR403

RA402

NO

NC

ND

NO

NO

NC

C

CN401-1

AC (N)

CN401-2

AC (H)

CN401-3

AC (H)

MOTOR (H)

CN402-1

MOTOR (L)

CN402-2

CN403-1

FAN-1 (H)

CN403-2

FAN1-H (N)

CN403-3

FAN1-L (N)

Optics
Anticondensation
Heater (H)

CN405-1

CN405-2

Optics
Anticondensation
Heater (N)