Service Mode And Bus Data - Changhong Electric PF2939 Service Manual

Service Mode and Bus Data

1. How to Enter the Service Mode with the Remote Control
1) Decrease volume to 0.
2) Press and hold down the MUTE button on the remote control for 2 second then press MENU button on the TV.
3) Adjust the TV with the MENU SELECT buttons on the remote control.
4) Press the button on the remote control to quit the Service mode.
2. Bus Data
2.1 Adjustment and option data in S mode
Symbol
OP1 173
OP2 7
OP3
129
OP4 143
OP5
137
OP6
175
OP7
175
OP8 234
6 PAR Set to optimum
6 BOW Set to optimum
6 HSH Set to optimum
6 EWW Set to optimum
6 EWP Set to optimum
6 UCR Set to optimum
6 LCR Set to optimum
6 EWT Set to optimum
6 VSL Set to optimum
6 VAM Set to optimum
6 SCL Set to optimum
6 VSH Set to optimum
6 VOF Set to optimum
6 CCV Set to optimum
6 HOF Set to optimum
6 CCHF Set to optimum
VX 25
RED Set to optimum
GRN Set to optimum
SERVICE MANUAL
Adjustment
Option byte 1（See "Option bit set"）
Option byte 2（See "Option bit set"）
Option byte 3（See "Option bit set"）
Option byte 4（See "Option bit set"）
Option byte 5（See "Option bit set"）
Option byte 6（See "Option bit set"）
Option byte 7（See "Option bit set"）
Option byte 8（See "Option bit set"）
Parallelogram correction
Bow correction
Horizontal shift
East-west width adjustment
East-west pincushion correction
Upper corner correction
Lower corner correction
East-west trapezoidal correction
Half frame vertical
Frame amplitude
Frame linearity
Frame center 60Hz
Vertical position of character
Vertical position of CCD 60Hz
Horizontal position of character
Horizontal position of CCD
16:9 mode
Red gun cutoff voltage
Green gun cutoff voltage
Description
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
38
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
(Continued)