Chapter 3. Handling The Printer - Sharp PR-45M Service Manual

CHAPTER 3. HANDLING THE
PRINTER
1 Special Handling Considerations
(1) When transporting the printer
•
When transporting the printer, the head up lever should be raised
in the B : Head up position so that the head does not contact the
platen rollers.
Failure to do so will may result in pear the printer performance.
•
When the printer is carried, it should not be held at the connectors,
the lead wires, paper take-up frame, etc.
•
When carrying the printer, never allow large impacts to occur, such
as by dropping, collision, etc.
•
When carrying the printer, hold the frame with both hands, as
shown in the figure below.
Fig. Carrying the printer unit
•
When transporting the printer, pack it using anti-static packaging.
Do not touch the thermal head and the surface of the PWB. When
handling the printer, properly ground yourself.
Head up lever position
: Close position
The head is in contact with the platen roller
The printer operates and feeds the paper.
The illustration shows the state when the PT-cover is removed
for explanation purposes only.
Head
Head Up Lever
Fig. Close position
(In contact)
Platen roller
H-Spring
:Head-up position
The head is not in contact with the platen roller.
When the printer is out of service for a long time or when it
is to be transported.
The illustration shows the state when the PT-cover is removed
for explanation purposes only.
Head
Head Up Lever
Fig. Head-up position
: Cleaning position
When the head and platen roller are to be cleaned.
Do not leave the head-up lever in this position; Failure to do
so might result in a deformed H-spring, thus leading to poor
print or paper feed quality.
The illustration shows the state when the PT-cover is removed
for explanation purposes only.
Head
Head Up Lever
Fig. Cleaning position
Platen roller
H-Spring
Platen roller
H-Spring