Ikegami HTM-1517R, Service Manual

Page: 9 / 108

1-A-2
7. While keeping the angle at step 6, rotate the two
magnets together and adjust the deviation of the
horizontal lines.
6
6
Green
Red/
Blue
Fixed
Angle
8. Tighten the lock ring after completing of the center
convergence.
(3) CRT replacement
The original replaceable CRT has a fixed deflection
yoke.
This is no need to readjust the purity and
convergence.
1. Remove the four screws fixing the top cover, and
remove the cover.
2. Remove the eight screws fixing the right cover and
left cover, and remove these covers.
3. Remove the anode cap of the CRT.
4. Remove the CRT SOCKET BOARD from the CRT.
5. Remove the deflection yoke connector (CN901)
on the DEF BOARD.
6. Pull out the front panel on the front right side,
disconnect the connector and take it out.
7. Disconnect the connector between FRONT LEFT
PANEL and DEF BOARD.
8. Remove the four screws fixing the escutcheon, and
remove the CRT together with the escutcheon.
Make sure that the neck of the CRT does not touch
the main unit at this time.
9. Place a soft cloth below the escutcheon to prevent
it from scratches. Place the CRT on a stable surface
with the escutcheon down.
10. Assemble in the reverse procedure of the above
from step 9 backwards to step 1.
Re-adjustment after replacing the CRT
1. Adjusting the center of the screen
Refer to 4.10 (7) of the operation manual.
2. Adjusting the size of the screen
Refer to 4.10 (9) of the operation manual.
3. Adjusting the focus
Refer to 4.10 (5) of the operation manual.
4. Adjusting the white balance
Refer to 4.10 (3) of the operation manual.
5. Adjusting the trapezoid distortion and side pin
Refer to 4.10 (8) of the operation manual.
(4) BATTERY replacement
Before replacing the battery, note down the preset
data.
1. Set the POWER switch to ON, wait for some time,
and set it to OFF. (This charges the backup
capacitor.)
2. Remove the MPU BOARD from the leftmost slot
on the rear, and replace the battery.
This setting is held it exchange is able to complete
within least four minutes after it turns OFF the
POWER switch.
3. Insert the MPU BOARD back into its slot.
Set the POWER switch to ON, and check that the
screen is normal.
!
CAUTION
Danger of explosion if battery is incorrectly
replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according to the
manufacturer’s instructions.