Adjusting The Head Gap - Citizen CD-S500 Series Service Manual

3-15

Adjusting the Head Gap

When the following parts have been removed or when the fixing screws of these parts are loosened,
be sure to adjust the head gap.
• Mechanism unit
• Platen
Head Gap Adjusting Procedure
1) Remove case U.
Refer to "3-6 Disassembly and Assembly of Case U, Front Cover and Operation Panel PCB"
and "♦ Removing the Lever Cover, Case U and Knob N" (Page 3-7).
2) Close the platen chassis.
3) Use thickness gauges and measure the clearance between the head and the platen at the
marking areas (3 positions) on the platen.
Appropriate head gap D = 0.55 mm
4) If the head gap is not appropriate, loosen the platen fixing screws (2 pcs.), adjust the platen
position to the appropriate clearance and secure the platen in this position.
* When assembling the parts, follow the procedure in reverse.
• If the gap between the head and the platen is not appropriate, printing cannot be
performed in appropriate density.
CAUTION
Platen fixing screw
Miniature pan head screw M3 × 6 W
* The above figure shows a standard model.
Platen
Platen
3-44
CD-S500 Series
Markings
SA print head
D
D = 0.55 mm