Ikegami HTM-1550R Service Manual page 42

(I) VR401: SET UP HEIGHT
VR402: MIN HEIGHT
(D Set the SCAN SIZE to NORMAL using the 1080i signal
as
the in-
put signal, and set the ~E'fU~ switch to ON.
®
Adjust HEIGIITon lhe screen lo the following sizes using VR401.
ISSOR: 60 mm
2050R:80mm
@
Set SCAN MODE lo 16:9 UNDERSCAN, and set HEIGHT to
10%
using theiHEIGH] switch.
©
Adjust HEIGHT on the screen to the following sizes using VR402.
ISSOR: 152 mm
20S0R:214mm
(g) VRS0I : V. PARA GAIN
VRS02 : H.PARA GAIN
VRS03 : O.S-7
CD
Im_pose an appropriate bias using VR503, adjust the forus on the
left and right sides of the screen using VR50~ and optimize the lop
and bottom edges using VRS0I.
(h) VRI: X-RAY PROT
VR2
:HVADJ
CD
Connect lhe high voJtage meter lo lhe anode cap.
®
Set the high voltage
as
follows.
1SSOR:275kV
20S0R: 285kV
@ Set CONTRAST and BRIGHTNESS to the MANUAL mode,
and minimize each.
@
Start
protection operations using
VRl, and tum OFF the
POWER once.
®Lower VR2 slightly (towards the MIN side), tum ON the POWER,
and set the high voltage as follows.
1550R:25kV
2050R:26kV
- 32 -
· These controls are not for field servicing and are fixed
v.r:ith
glue after
setting
10
avoid X-ray radiation, which may cause one componenl fail-
ure in the
ciruijf
and !ouch nol of lhis conlroJs. The sealing method is
shown in the diagram.
GJue epoxy resin
These adjustment are required when replacement oftJ,e parts marked
with
*•
@ in lhe schematic diagram of the HV Olff is done.