IBM 1800409-001A - Manual (Page 276)

Replacing the Controller Board
This section explain how to replace the controller board after
installing a printer option.
The following instructions are written for advanced users. Do not
attempt this procedure if you have no experience working with
circuit boards.
CAUTION: It’s very important to protect the printer controller
board from electrostatic damage while performing this task.
If an anti-static wrist strap is provided in your printer option kit,
attach one end of it to your wrist and the other end to any convenient
electrical ground (for example, the bare metal chassis of equip-
ment, as on the back of a computer, that is plugged in but turned
off). Never attach the wrist strap to any piece of equipment with an
electrical current present. Turn off all power switches first. Plastic,
rubber, wood, painted metal surfaces, and telephones are not ac-
ceptable grounding points. The printer isn’t an acceptable ground-
ing point either because it must be unplugged before you perform
this task.
If you don’t have an anti-static wrist strap, discharge your body’s
static electric charge by touching a grounded surface before you
handle any printer boards or components and before removing the
tray assembly cover. Redischarge your body each time after walk-
ing around and before touching the printer tray assembly again.
Handle the tray carefully, and try to handle it by the edges only.
Chapter 8
8 - 2 0 P r i n t e r O p t i o n s