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Sharp PA-W1400 Service Manual page 37

Personal word processor

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PA-W1400
[9] BASIC FUNCTIONAL CHECKS
9-1. Power-on check
Check the following after pressing the main switch with the power
key.
1) Make sure that the ribbon stops at its home position after shifting
up and down (ribbon initial action).
2) Make sure that the printwheel stops at its home position (under-
line).
3) Make sure that the carriage base stops on its left margin (at 10th
column in the ten pitch mode which is initial setting).
NOTE: For some of machines are set to the 12 pitch mode, refer
to Destination Table in Parts Guide.
4) Make sure that the main menu is displayed in the LCD.
9-2, Manual check during initial state
1) Move the LCD contrast adjust VR and check to see that the LCD
contrast changes.
2) Move the LCD brightness adjust VR and check to see that the
backlight is adjusted.
3) Press the ET/WP key and check to see that it goes into the
typewriter mode.
Operation must be carried out in the typewriter mode, hereinafter.
9-3. Checking printwheel home position
Check the home position (underline).
x
0.05mm max.
[Check]
The printwheel and the hammer must be positioned as shown in the
figure above, when the printwheel stops at its home position. If
deviated from the limits, rotate the wheel motor to make fine adjust-
ment of the home position. (This check-out needs to be done while
power is on. After the fine adjustment has completed, turn power off
and on to check its initial operation.)
9-4. Checking key entry
In the initial state, type every key to check that the character printed
conforms to the keytop inscription.
9-5. Checking paper holding plate position
Make sure that there is a clearance of 0.2 to 0.4mm between the
paper holding plate and the platen and insert the test paper to check
that it moves smooth..
The clearance must be adjusted using the
feeler gauge.
9-6. Checking carriage movement
MAR]
{BS
keys until beep is heard and keep the
REL | |MICRO-
SPACE]
keys pressed. (Must be in the AUTO-CR mode.)
Press the
L-MAR
R-MAR]
[Check]
Make sure that the carriage moves smooth without stopping on its
way, showing no speed fluctuation, irregular noise, and vibration.
9-7. Checking paper insertion
[Operation]
Rotate the platen knob to insert the paper.
Press the [T PRE | or (UNEXT]
key to move the paper up and
down.
SCRN
SCRN
[Check]
The paper must move smooth without noise and skew.
9-8. Checking ribbon and tape lift rate
{Operation]
1) Type [CODE]
+{U
|, [KI],
[7 ] keys to print ten charac-
XXX
key to erase five characters.
/ |) ters.
2) Press the| SZ
[Printout]
ULL
[Check]
Check the trace on the correctable ribbon and the liftoff tape to see
that they are as shown below.
Correctable ribbon
enor See
Liftoff tape
Cc
eens
ce i
a
aes
[Check]
.
az05,b205,c20.5,d205
Aiter printing, press the [MODE]
+[U]keys
to cancel te under-
line mode.
XXX
Press the [KBII] key to cancel the KBI! MODE:
9-9. Checking print pitch
[Operation]
Press the [LOCK] and [H] keys.
[Printout]
:
UHHH HHHRH HMR RARAES fe HERRERA
9-41

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