White Balance
1 Turn the set on.
2 Using the MENU set the color, brightness, picture and sharpness controls to MINIMUM. Select ANTENNA
INPUT and disconnect the antenna.
3 Set Sub-Bright Control R390 (E-3) to minimum (Fully clockwise)
4 Set G2 to minimum.
5 Set Green and Blue Drive Controls to mid-range. Red Drive is fixed at mid-range.
6 Set all three Cutoff controls fully clockwise.
7 Turn set off with Remote Transmitter. (Do not unplug Set.)
8 Disconnect vertical yoke plug (P550).
9 Turn set ON.
10 Adjust G2 Clockwise until a line just becomes visible. This line will be the color of the dominant gun.
11 Adjust the other two cutoff controls to achieve a low level white line.
12 Reduce G2 slightly until the line barely disappears.
13 Turn the set off with the Remote transmitter.
14 Reconnect yoke plug.
15 Turn set ON.
16 Adjust sub-bright Control (CCW) until raster just becomes visible.
17 If necessary, adjust Green and Blue Drive controls to achieve white Raster.
18 Adjust Sub-bright (CW) until raster barely disappears.
19 Set Bright, Picture and Color to mid-range with Remote Transmitter.
Stereo Alignment (For Stereo Models Only)
Note:
The following procedure was performed with a Sencore VG91 Universal Video Generator and must be done
while the set is in the service mode.
1. Enter the Service Mode by pressing
06-25-96-MENU
on the remote control, scan to channel 3. Do not mute
sound during the following adjustment. Refer to Service Test Mode for further entry information.
Input Level Adjustment
1. Set VG91 as follows: STID TV Channel 3, RF-
IF Range set to HI, RF-IF Level set to NORMAL (1), Video
Pattern = Raster, R-G-B raster controls OFF, Mode Switch set to L+R, Audio Frequency set to 30OHz., and 0
Pilot (max. CCW).
2. Connect RF output to Television antenna input, adjust VG91 level to remove snow from raster.
3. Enter 81 with the remote for Input Level.
4. Adjust Input Level to 1.4Vp-p on oscilloscope at Test Point 52 (B-1) (Pin 10 of IC200) using the +/- controls on
the remote.
Содержание 7538
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