Keyboard Display Test; Modem Test (M1700A Only) - HP PageWriter XL M1705B Service Manual

Keyboard Display Test
The keyboard display test exercises each cell in the LCD by
displaying the following patterns:
n
checkerboard cells
n
all black cells
n
inverse checkerboard cells
n
all white cells
n
text characters
You must observe the keyboard display while the test pattern is
running to ensure:
w accurate rendition of all characters and patterns
n
no random lines or dots in the display
m no permanent patterns visible at normal contrast. Patterns may be
visible at low contrast (darker screen); this is normal.
n
no LCD flickering
This test relies on the visual inspection of the test patterns for
detecting failures. There is no failure message for the keyboard
display test.
Modem Test (M1700A Only)
The modem test checks the operation of the Hayes@ modem and its
connecting cable.
Note .I
t?
The cardiograph must be connected to AC power to operate the
.
Hayes@ modem.
If the modem passes the test, the message Modem firmware
checksum: xxx. appears. If the modem fails the test, or if the test
is run when a modem is not installed on the M1700A, the message
Modem test failed. appears on the keyboard display.
Note
:'
w
If the M1700A is not, equipped with a modem, selecting the modem
test results in a test failure. If you have selected the "All" test
choice, remove the modem test from the selected tests to avoid an
erroneous test failure.
4-6 Performance Verification and Maintenance