Table of Contents
Advertisement
CARRIAGE MECHANISM - AA
Mounted at the front of the carriage unit (AA-51) is the video
amplifier bracket (Fig. 8-1/120) supporting the video amplifier (See Figure
7-18) and cabling to the power driver board (Fig. 7-16).
Mounted at the back of the carriage unit (to right of the center
line) are two ribbon guide rollers (AA-62) which maintain proper ribbon
operating tension as the head moves out to the right while printing.
5.2.1.2
Removal/Repl acement
A.
PRINT HEAD
(With platen knob (AJ-17), Plate (AJ-18) and Screw (AJ-19) removed)
1.
Remove outside covers prior to disassembly, and loosen head
locking knob (AA-59).
2. Turn head adjusting knob (AA-58) for maximum gap between
platen (See Figure 1-6/12) and front of head (Figure 1-6/1).
3. Unplug solenoid fingerboard (Figure 8-19/9) from video
amplifier connector below print head.
4. Using a 3-32-in. diameter allen-wrench, remove at the top,
on each side of head bracket unit (AA-66), two allen-head
screws (4-40 x .50
19)
and two No.4 internal lockwashers.
5. Remove from the bottom, on each side of head bracket, two
remaining screws (4-40 x .62
19)
and two No. 4 internal
lockwashers.
B. CARRIAGE UNIT
1. Remove print head (Refer para. 5.2.1.2A, steps 1-5).
2. Remove video amplifier board (See Figure 1-6/2) by remov1ng
screws, lockwashers, flatwashers (See Figure AA-96, 97,
98) from bracket attached to carriage unit (AA-51).
3. Remove left and right ribbon spool from printer.
4. Remove left ribbon holder bracket (AL-8) by removing screws,
lockwashers, flatwashers (AL-52, 53, 54).
5. Remove right ribbon holder bracket (AL-55) by removing
screws, lockwashers, flatwashers (AL-93, 94, 95).
6. Remove nuts (AL-103) from ribbon feed bar (AL-101).
7. Remove screws (AD-38) and washers (AD-39, 40). Rotate
bracket (AD-34) out of the way.
8. Slide the rear carriage bar (AB-7) out from carriage
rollers (AA-52) by removing screws and lockwashers (AB-27, 28).
9. Remove main driving belt (AE-9)
by
:"emoving two nuts (AA-I05)
from belt tension axle (AA-I06).
5-3
Rev.
E
Advertisement
Table of Contents
