7 Troubleshooting
CKG7507L 7-9
Location Function
C201 Horizontal Size
C202 Vertical Position
C203 Horizontal Position
C211 Vertical Linearity
C212 Pinbalance
C213 Parallelogram
C214 Trapezoid
C216 Side Pincushion
C217 Vertical Size
7-11 User Controls Don’t Work
Check the button and CF201_2
connector Ass’y.
(SW1 ~ SW5 and SW6 ~ SW10)
Check IC201.
Check IC201, IC202 and
RESET circuit.
Does DC 5V appear at Pin 8 of
CN201?
Does the DC level change at
the positive poles of C201 to
C217 when you push the
front panel buttons?
(See table 7-2)
Yes
No
No
Yes
Table 7-2. Front Panel Button