2) The following initial setting should always be per-
formed when replacing the IC 102 (PCD 8582).
ITEM
VSOM
AFC
REF
ROFF
GOFF
BOFF
A B L M
TEST
DRGB
NAME REGISTER
V P
V P
V P
V P
V P
V P
V P
A P
V P
V S M O
AFC
1.0
REF 1.0
OFF NR
OFF NG
OFF NB
A B L M
T
DRGB
0
0
2
1
1
1
1
0
1
*Please with the memory each items by pressing
and then
5-2. A BOARD ADJUSTMENTS
A-31
A-52
o
A-55
A-32
A BOARD
-component
IF 201
AGC
BLOCK
1) Input a color-bar signal.
2) Adjust AGC VR of IF 201 so that snow noise and
cross-modulation disappear from the picture.
3) Confirm them at every channel.
A D J U S T M E N T
1) Set to Service Mode.
2) Input a color-bar signal.
3) Connect a frequency counter to base of Q 501.
4) Call the item of AFC, set to 3 level (free run).
5) Select HFRE
6)
the
60 Hz level.
7) Call the item of AFC again, adjust the level“ 00
8) Write into the memory by pressing
then
AD
JUSTME
NT
1) Set the Service Mode.
2) Input an off-air signal
IN
no signal).
3) Connect the frequency counter across connector
VDY
of A-52 connector and ground.
4) Select VFRE
5)
the 56
Hz.
6) Write the memory by pressing
then
.
TRAP
AD
J U S T M E N T
1) Set to Service Mode.
2) Input a color-bar signal.
3) Select NOTCH (VIDEO condition), turn ON by
press-ing
q
. And then set the COLOR VR to
maximum set-ting position and SHARPNESS
control to center.
4) Connect an oscilloscope to
pin
of A-32
connector and ground.
5) Select C ROM
and then adjust 3.58
MHz (CHROMA) ingredient is minimum with
6) Write into the memory by
then
7) Set NOTCH to OFF, and make normal condition
then RESET
