NEC JC1402HME Service Manual page 41

I
12. IMPURITY ON CRT SCREEN
POWER SW OFF AND WAIT FOR
5 ~ 1O-MtNUTES TO GET AN
EFFECT OE THE TH601
POWER SW ON AND PRODUCE
VIDEO ON THE CRT CONFIRM
DEGAUSSING EFFECT
NO EFFECT
EFFECT.BUT
NOT ENOUGH
l
- - - - - -
-~---~------~TJ
MAKE SURE THAT THE
MONITOR IS DISTANT
FROM ANY STRONG
MAGNETIC FIELD
TH601 ,DEGAUSSING COIL CONNECTOR
DEGAUSSING COIL
NO MAGNETIC FIELD INTERFERENCE
2
[ ; :
EADJLJST
~~J
PURITY MAGNET
- - - - - - - -
- - -
- -
CRT, DY, PURITY MAGNET
FAILURE
13. ABNORMAL TEXT MODE OPERATION
[ --~--------
---------
-·ND~
l
CHECK VR PWB AND
INPUT PWB
- - - - - - - - -
- - - - _ .
- - - - - - - -
ON VR PWB PWE-207D
SW2 (TEXT SWITCH)
SW3 (TEXT COLOR SWITCH)
TR1, 02, D3
CONNECTOR T
FAILURE
ON INPUT PWB PWE-206
-~~---
IC801,IC803
TR820,TR821,TR822,TR823
FAILURE
- 3 9 -
FAILURE
.-