Sharp LC-121M2E Service Manual page 12

LC-121M2E
LC-150M2E
B DRIVE adjustment
Colour level adjustment
(N358)
Tint adjustment
(N358)
N443/PAL-M adjustment
4V adjustment
PAL/SECAM OSC
adjustment
. Input the standard colour bar signal
(the same pattern as that of JPN-
8CH) of N358 into AV1.
. Connect CH1 of oscilloscope to
TP821 (G output).
. Connect CH2 of oscilloscope to
TP820 (B output).
. Input the standard colour bar signal
(the same pattern as that of JPN-
8CH) of N358 into AV1.
. Connect the oscilloscope to TP820
(B output).
. Input the standard colour bar signal
(the same pattern as that of JPN-
8CH) of N358 into AV1.
. Connect the oscilloscope to TP820
(B output).
. Position the cursor on DATA COPY
and press VOL key.
. Connect the DC voltmeter to TP1110
. Input the monoscope pattern of PAL
into AV1.
12
. Adjust so as to get 100% white level
identical with that of green.
Adjust N358 SCOLOR so as to get the
colour bar signal blue amplitude
(black level - peak level) equal to 2.0V
+ 0.05Vp-p.
1. Adjust N358TINT so as to get the
colour bar signal magenta amplitude
(black level-peak level) equal to 1.7V
1. The indication changes from WAIT
to SEND, and after the lapse of one
second WAIT is restored. Thus, N443,
PAL-M adjustment is completed.
1. Adjust R-ADJ to 4.0V + 0.05V.
(DAC 6ch)
1. Adjust PAL/SECAM OSC so as to
get the normal screen.
(DAC8ch)