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2) The following initial setting should always be per-
formed when replacing the IC 102 (PCD 8582).
ITEM
NAME REGISTER
ADJUSTMENT
VSOM
VP
VSMO
0
AFC
VP
AFC
1.0
0
REF
VP
REF
1.0
2
ROFF
VP
OFFNR
1
GOFF
VP
OFF NG
1
BOFF
VP
OFF NB
1
ABLM
VP
ABLM
1
TEST
AP
T
0
DRGB
VP
DRGB
1
*Please with the memory each items by pressing
!MUTING!-> and then presslENTERI.
5-2. CIRCUIT ADJUSTMENT
I
RF AGC ADJUSTMENT (IF BLOCK VR)
I
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.
I
H. FREQUENCY ADJUSTMENT (HFRE)
I
1) Set to Service Mode.
2) Input a color-bar signal.
3) Connect a frequency counter to base of Q 502.
4) Call the item of AFC, set to 3 level (free run).
5) Select HFRE with[!]and~.
6) Adjut@land~to the 15.735± 60 Hz level.
7) Call the item of AFC again, adjust the level" 00 ".
8) Write into the memory by pressing !MUTING! --->
then !ENTER!.
I
v.
FREQUENCY ADJUSTMENT (VFRE)
I
1) Set the Service Mode.
2) Receive an off-air signal (VIDEO
IN~•
no signal).
3) Connect the frequency counter across pin® of A-81
connector and ground.
4) Select VFER with[!]and~.
5) Adjust@land~to the 55 ±1 Hz.
6) Write the memory by pressing !MUTING!---> then
!ENTER~
KV-27XBR51/27XBR55
RM-Y106
RM-Y107
I
CHROMA TRAP ADJUSTMENT (CROM)
I
1) Set to Service Mode.
2) Input a color-bar signal.
3) Select NOTCH (VIDEO condition), tum ON by press-
ingl±J.
And then set the COLOR VR to maximum set-
ting position and SHARPNESS control to center.
4) Connect an oscilloscope to TP47R (R OUT) on C
board.
5) Select CROM with[!]and~, and then adjust 3.58MHz
(CHROMA) ingredient is minimum with@la.nd~.
6) Write into the memory by pressing !MUTING!--->
then !ENTER!.
7) Set NOTCH to OFF, and make normal condition
with!VIDEOI --->then !RESET!.
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SUB CONTRAST ADJUSTMENT (SPIX)
I
1) Set to Service Mode.
2) Input a color-bar signal. (75 IRE)
3) Set the conditions as follows.
PICTURE · · · · · MAX
COLOR
MIN
ROFF·
ON
GOFF········· OFF
BOFF ·
OFF
PresslVIDEOI --->
g
(L) (It becomes minimum).
Select@] (ON) and~ (OFF) with[!]and~.
SERVICE ROFF 0.1
, _ _ _ ,_-0..,1: ON
OO:OFF
4) Connect an oscilloscope to TP47R (R OUT) on C
board.
5) Adjust@]and~to the 2.1 ± 0.lVp-p level by select-
ing SPIX with[!]and~.
6) Write the memory by pressing !MUTING! ---> then
!ENTER!.
7) Return the following back to normal after adjustment.
GOFF·
ON
BOFF ·
ON
COLOR·
CENTER
PICTURE
· 80%
-35-
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