HP 220 - Manual (Page 170)

ALT
Bail Cycle Test
ALT
Bail Sensor Test
SHIFT
Electrical Test
8Ć22 Removal and Replacement C3187Ć90000
Performing the Service Tests
The following paragraphs describe how to perform the various service tests. You know that a
test has failed if a system error is indicated by means of the frontĆpanel LEDs.
Bail Cycle Test
, Enter service mode (see page 7Ć2).
. Hold down the
ALT
key and press
Bail Cycle Test
.
T
Busy
L l ts up and t ba l b ns y l s o b n gently ra s d and low r d.
A Press the
ALT (Cancel)
key when you want to stop the test.
BailĆSensor Test
, Enter service mode (see page 7Ć2).
. Hold down the
ALT
key and press
Bail Sensor Test
.
T
Busy
L l ts up.
A Open the window within 120 seconds.
Ot rw s t
Busy
L o s o and t t st nds.
4 Manually raise the bail.
T
Ready
L las s.
5 Press the
ALT (Cancel)
key when you want to stop the test, and lower the window.
Electrical Test
, Enter service mode (see page 7Ć2).
. Hold down the
SHIFT
key and press
Electrical Test
.
T
Busy
L l ts up and r ma ns l t or about 30 s onds w l t t sts ar b n
p r orm d.