Magnum PF21GB300 Service Manual page 8

Test Point
Negative of VD49 1
21 "FS_CRT_anode
21"US CRT anode
(HUAFEI)
Heater
. Lian grid, focuse of the adjustment and white balance adjust
2.2.4
Caution: Dangerously high voltages are present inside the TV. Extreme caution should be exercised when
working on the TV with the back removed.
(1) Power on the TV and preheat it for 15 min.
Pack P.MODE key to work a television at the natural mode.
(2)
ounterclockwise to adjust the Lian grid to the least.
(3) C
Press VSD key of factory remote control, clockwise adjust the Lian grid , adjust
(4)
to the screen to at the right moment appear a horizon;
Adjust parameter BLOR, BLOG and BLOB under the horizon，adjust the horizon as
(5)
white.( Generally don't adjust BLOG)
And then press VSD key again, Adjust Lian grid, make the horizon
(6)
accommodation(not dazzling, white, if it doesn't white repeated step until
white)
Regulate to focuse , make the light grid focuse good,and you get
(7)
2.25 SERVICE mode
To enter the SERVICE mode
Set the volume to 0. Then press and hold the MUTE button on the remote control, and press the MENU
button on the TV to enter the SERVICE mode. To exit from the SERVICE mode, turn off the TV set by the
POWER button on the remote control.
Caution: The user service mode adjustment can be changed only when service personnel adjust the whole
set data during servicing. As the control data have dramatic effects on functions and performance of the
TV,service personnel should not tell user how to enter the SERVICE mode to avoid improper data
settings.
Adjustments and bus data
Symbol Description
Page 0
The OTP Software NO Displayed As：GDET03**-**
V-Bri Pic Brightness Displayed
VSD Vertical Scan Disable
Page 1 G-0 When Vertical Frequency is Identified as 50Hz,Then 50Hz will be displayed; so is
60Hz.
HSH Horizental Shift
HPAR Horizental Parallelogram Correction
Voltage
184±3V
25.5±1.5KV
25.5±1.5KV
6.3±0.3Vrms
8
Test Point
14"GS_CRT_anode
21 "PF-CRT-anode
21"US CRT anode
(SAMSUNG/LG)
Voltage
22±1.5KV
26.5±1.5KV
23.5±1.5KV
a sharp picture.
Data
32
32
32/38
26/28