Service manual

IM1015
4.3 VERTICAL CIRCUIT ADJUSTMENT
1. Apply a crosshatch video signal to the unit via J1 or J2.
2. Adjust vertical hold control R154 to the center of its range.
3. Adjust vertical height control R158 for a full raster from top to bottom.
4. Adjust vertical linearity control R160 and vertical height control R158 for
equal spacing between the horizontal lines of the crosshatch signal.
4.4 HORIZONTAL CIRCUIT ADJUSTMENT
1. Apply a crosshatch video signal to the monitor through J1 or,J2.
2. Adjust the horizontal hold control R187 to lock in the picture horizontally.
3. Adjust width coil L103 for a full raster from left to right.
4. Adjust linearity sleeve on the CRT neck for equal spacing between the
vertical lines of the crosshatch signal.
4.5 CHASSIS REMOVAL
4.5.1 TD23 Model
Remove input signal cable from J1 or J2. Remove screws holding cabinet back
and remove back from
set. Discharge CRT HV anode to chassis ground and dis-
connect it from CRT. Disconnect CRT socket deflection coil plugs, brightness
and contrast control plugs. Remove screws holding chassis to cabinet bottom.
Remove chassis from cabinet.
4.5.2
TD12 and TD15 Models
Remove input signal cable from input panel. Remove screws holding cabinet back
and remove
it from set. Remove screws holding chassis to cabinet bottom and
lift out chassis from cabinet.
4.6 CRT REPLACEMENT
4.6.1 TD23 Model
HARNING
Extreme care shall be taken when
hnndlina the CRT. Safetu alasses
~~d--gZ;~e~ -mu~t be w;~ ~h~nhandling
the CRT. Care must be taken to
prevent scratching or nicking the
Crt or subject it to undue pressure
when removing or inserting the CRT
into the monitor.
DO NOT LIFT CRT BY THE ll/Eel{
Remove signal input cables from input panel. Remove screws holding cabinet
back and remove back from cabinet. Discharge CRT HV anode to ground. Disconnect
HV anode, deflection coil plugs, brightness and contrast controls plugs.
4-3