Contex COUGAR 36 - 3 Electrical Check and Adjustments; Marking Codes for Circuit Boards and Programmed Devices

FSG/MTM/001 060511
25
3. Electrical Check and Adjustments
Required Test Equipment:
Multimeter, R
i
> 10 MOhm
PC with SCANtest 6 and Scanner Maintenance installed, and
• USB and SCSI interface for COUGAR 25, 36
• USB interface for CHAMELEON 25, 36, PREMIER 36
• IEEE 1394 and SCSI for CHROMA Tx 40, CRYSTAL Tx 40
• IEEE 1394 and SCSI for MAGNUM XL 54
• IEEE 1394 and SCSI for COUGAR Tx 36, CHAMELEON Tx 36,
and PREMIER Tx 36
SCANtest 6 is described in Chapter 10, page 171.
Scanner Maintenance is described in Section 6.1.7, page 142.
3.1 Marking Codes for Circuit Boards and Programmed Devices
All circuit boards are identified by a 4-letter code, where the fourth letter is designating a
specific variant of the board. A board revision number follows the board identification code.
The marking of all newer printed circuit boards may be exemplified by the marking of the
SUC-Board:
SUCA02
which designates SUC-Board, variant A, revision 2.
The marking code of the older OIBA- and OSBC- Boards are a little different, for example:
OIBA-1.0
which designates OIB-Board, variant A, revision 1.0.
The revision number is updated only if the functionality of the board has been changed.
Updated boards will always be backwards compatible.
Programmed components, like CPLDs, Flash Memory, etc., are marked with a 3- or 4-letter
identification code, depending on whether the component is basic or variant specific. For
example, the component marking:
SUC.003-2
identifies the Interface Controller used on all variants of the SUC-Board. 003 is a component
specific number and 2 is the firmware revision number.
The variant designation (and part number) of the circuit boards used for a particular scanner
model can be found in the Spare Part List included in the Technical Service Manual.