Scanner User Manual
EPSON Perfection 636
10/98 EPSON Perfection 636
 - 3
Logic level TTL compatible
Electrical standard ANSI X3T9.2/375R Revision 10L 
(SCSI-2)
ID Setting Selectable from 0 to 7 (factory setting: 2)
Terminator Internal terminator selectable (enable/
disable)
Connector type Two half pitch 50-pin connectors
Connector pin arrangement
Initialization 
methods The scanner can be initialized (returned to
a fixed set of conditions) in the following
ways:
Optional Transparency Unit 
Specifications
The transparency unit (B813132) allows you to scan positive 
and negative transparent materials—35 mm slides, filmstrips, 
and film up to 4 × 5 inches in size. It is compact so it can be 
attached or removed easily when you alternate between 
scanning transparent materials and normal reflective (paper) 
documents.
Basic Specifications
Dimensions Width: 8.8 inches (222.4 mm)
Depth: 12.0 inches (305.4 mm)
Height: 1.4 inches (36.9 mm)
Weight 1.5 lbs (0.7 kg)
Maximum 
readable area 3.6 × 4.6 inches (93 × 118 mm,
size of 4 × 5-inch film holder opening)
Electrical Supply voltage: DC 24 V 10% V
Rated current: 0.5 A
Reliability 10,000 hours
Humidity (without 
condensation)
Operation
10% to 80%
Storage
10% to 85%
Operating 
conditions Ordinary office or home conditions; avoid
extreme dust, operation under direct
sunlight, and strong light sources.
Safety approvals UL 1950
CSA C22.2 No. 950
EN 60950
IEC 950
EMC FCC Part 15 subpart B class B
CSA C108.8 class B
AS/NZS3548 Class B
CE Marking Low voltage directive 73/23/EEC
EN60950
EMC Directive 89/336/EECEN55022 
Class B
EN50082-1
IEC 801-2/801-3/801-4
Resistance to 
electrical noise 
(static electricity) panel: 10 kV
metal: 7 kV/150 pF, 150 ohm
Document 
specifications Transparencies up to 4 × 5-inch film
(negative film, positive film)
35 mm strip film (negative, positive)
35 mm slides (negative, positive)
Brownie size strip film
Optional Auto Document Feeder 
Specifications
The auto document feeder (B813142) allows you to 
automatically load multi-page documents into your scanner. 
This document feeder is particularly useful for OCR (optical 
character recognition) scanning, or for creating an image 
database. You can load up to 20 legal size (8 1/2 × 14-inches) 
pages in the auto document feeder.
Basic Specifications
Dimensions Width: 12.6 inches (319 mm)
Depth: 17.8 (451 mm)
Height: 5.4 inches (137 mm)
Weight 4.9 lbs (2.2 kg)
Hardware 
initialization
*The scanner is turned on.
*The scanner receives a SCSI Reset signal from the 
SCSI interface.
Software 
initialization
*Software sends the ESC @ (initialize the scanner) 
command.
*The scanner receives a SCSI Bus Device Message.






