Epson PC AX Technical Manual page 3

PRECAUTIONS
Precautlonary notations throughout the text are categorlzed relative to 1) personalinjury and 2)
darnage to equlpment.
DANGER
WARNING
Signals a precautlon whlch, If ignored, could result In serlous or fatal
personalinjury. Great caution should be exercised in performlng procedures
preceded by DANGER Headlngs.
Signals a precaution whlch, If ignored, could result In damage to equlpment.
The precautlonary measures Itemlzed below should always be observed when performlng repalr/
rnalntenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER
SOURCE AND PERIPHERAL DEVICES PERFORMING ANY
MAINTENANCE OR REPAIR PROCEDURE.
2. NO WORD SHOULD BE PERFORMED ON THE UNIT BY PERSONS
UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED
FOR ALL ELECTRONICS TECHNICIANS IN THEIR L1NE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS
MANUAL, 00 NOT CONNECT THE UNIT TO APOWER SOURCE
UNTIL INSTRUCTED TO 00 SO. WHEN THE POWER SUPPLY
CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN
WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COM-
PONENTS.
WARNING
1. Repalrs on Epson product should be performed only by an Epsan
certlfled repair techniclan.
2. Make certeln that the source voltage is the same as the rated
voltage, Iisted on the serial number/rating plate. If the Epson
product has a primary AC rating different from avallable power
saurce, do not connect It to the power source.
3. Always verlfy that the Epson product has been disconnected from
the power source before removlng or replaclng prlnted circult
boards and/or Individual chips.
4. In order to protect sensitive microprocessors and clrcultry, use
static discharge equlpment, such as antl- static wrist straps, when
accesslng Internal components.
5. Replace rnalfunctlonlng components only wlth those components by
the manufacture; introductlon of second - source ICs or other non-
approved components may damage the product and vold any
applicable Epson warranty.