Service manual

SERVICE MANUAL
CL
Cathode voltage adjustment
（1-BMCC CRT）
5 For inspection only
AKB Auto dark balance adjusting switch 0 For inspection only
VSD Vertical output switch 0 For inspection only
MENU 6
CB Color band pass filter IF selection 0 For inspection only
CMB
Color sub-carrier output switch
Comb filter TD9181: 1-Yes，0-No
1
DS
Skin tone correction control: 1-On，
0-Off
1
DSA
Skin tone correction angle: 1-Skin
of eastern, 0-Skin of western
1
HCO Horizontal compensation 1 For inspection only
EVG Vertical output guard switch 0 For inspection only
MENU 7
CHROMA
DELAY
Brightness/color transient
improvement delay adjustment
3 For inspection only
BLACK
STRETC
Black level stretching adjustment 16 For inspection only
NONLINEARI Brightness linearity adjustment 32 For inspection only
VAR. GAMM Vertical non-linearity adjustment 32 For inspection only
PEAKING Peaking circuit 32 For inspection only
STEEPNESS Steepness control 48 For inspection only
CORING Coring circuit 32 For inspection only
LINE WIDTH Line width adjustment 10 For inspection only
MENU 8
ASK 1 For inspection only
DBL Blue level stretching 1 For inspection only
GBL 1 For inspection only
DGR 1 For inspection only
GGR 1 For inspection only
WGR 0 For inspection only
SGR 1 For inspection only
Notes:
① The data sheet may differ dependent on different models.
② The data sheet may differ dependent on different CRTs for the same model.
4. Service Mode Adjustment
1) Sub-brightness
a) Receive colour signals.
b) Set the contrast to maximum and brightness to medium.
c) Set the chroma to medium.
11