Service manual
14
29H-FG5RU
14-1
14-2
CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
No.
Adjustment point
Adjustment conditions/procedure Waveform or remarks
SUB-BRIGHT-
NESS
ADJUSMENT
(I
2
C BUS
CONTROL)
(DVD SIGNAL)
1. Select DVD mode.
2. Receive the signal of the DVD signal generator .
( Component signal) ( Window Pattern)
3. Make the image normal with the remote control-
ler.
4. Select the SUB-BRIGHT adjustment mode (DVD)
, and adjust the right dark white area of the win-
dow pattern to 3.0 cd
±
0.5cd of the window pat-
tern.
5
WHITE BAL-
ANCE BACK-
GROUND
I
2
C BUS
ADJUSTMENT
(DVD SIGNAL)
1. The window pattern is received with DVD signal (
component signal).
2. Apply the adjustment in the same manners as 2
(AV-IN SIGNAL) and subsequence above.
(DRI-GS-DVD, DRI-BS-DVD, CUT-RS-DVD,
CUT-GS-DVD)
3. Select the SUB-CONTRAST adjustment mode
with the remote controller, and adjust 50% white
to 165 ± 10cd.
Apply the adjustment after the end of 2 (AV-IN SIG-
NAL).
Note: 1. All of the DRI-GW/C-DVD & DRI-BW/C-
DVD can be obtain by using same calculation as
white balance adjustment above (No.2). CUT-RW/
C-DVD and CUT-GW/C-DVD setting data are as
follow.
CUT-RW/C-DVD = CUT-RS-DVD
CUT-GW/C-DVD = CUT-GS-DVD
3 Note 1:
Use the window pattern of the sig-
nal generator SX-1006 for adjust-
ment.
SUB-BRIGHT-
NESS
ADJUSMENT
(I
2
C BUS
CONTROL)
(AV-IN SIGNAL)
1. Receive the window pattern with AV input.
2. Make the image normal with the remote control-
ler.
3. Select the sub- bright adjustment mode with the
remote controller, and adjust the right dark white
area of the window pattern to 3.0 cd
±
0.5cd.
4
SUB-CON-
TRAST
I
2
C BUS
ADJUSMENT
(AV-IN SIGNAL)
1. Receive the window pattern with AV input.
2. Make the image normal with the remote control-
ler.
3. Select the SUB-CONTRAST adjustment mode
with the remote controller, and adjust 50% white
to 130
±
10cd.
Note : Make sure the TV set already in the RF re-
ceiving state before changing to AV mode to con-
tinue with this adjustment.
(no POWER OFF from the previous adjustment.)
6
50% white
Dark white
SUB-CON-
TRAST
I
2
C BUS
ADJUSMENT
(DVD SIGNAL)
1. Select the DVD mode.
2. Receive the signal of the DVD signal generator.
( Component signal) (Window Pattern)
3. Select the SUB-CONTRAST adjustment mode
(DVD) with the remote controller, and adjust 50%
white to 130
±
10cd.
Note : Make sure the TV set already in the RF re-
ceiving state before changing to AV mode to con-
tinue with this adjustment.
(no POWER OFF from the previous adjustment.)
7
50% white
Dark white
Note 1:
Use "Y" of Minolta color analyzer
CA-100 in adjustment.
Note 2:
Use the window pattern of the sig-
nal.
generator SX-1006 for adjustment.
CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
No.
Adjustment point
Adjustment conditions/procedure Waveform or remarks
CRT CUTOFF
ADJUSTMENT
(I
2
C BUS
CONTROL)
Note :
1. Before CRT cutoff adjustment, make sure fol-
lowing items are in INITIAL DATA.
a) A063 CUT-RS = 32
b) A064 CUT-GS = 32
c) A114 CUT OFF = 6
1. Switch TV to video mode , blue back off , with no
video signal and Press R/C to set picture into
normal condition.
2. Go to service mode at adjustment mode item A115
(VG2).
3. Adjust screen voltage until retrace line appear,
the following OSD will appear at bottom of screen.
UNSTABLE
OUT
ABOVE
4. Finally , slowly decrease the screen variable re-
sistor until following OSD appear.
STABLE
IN
ABOVE / BELOW *
* The last OSD row is the indication of the screen
voltage value. If it show "BELOW", please in-
crease the screen voltage and vice versa until
"STABLE" AND "IN" OSD appear.
Note :No matter the indication of last row's OSD is
indicate "ABOVE" or "BELOW", the important
thing is OSD change to "STABLE" and "IN".
1
WHITE BAL-
ANCE BACK-
GROUND
I
2
C BUS
ADJUSTMENT
(AV-IN
SIGNAL)
1. Receive the internal RF monoscope pattern.
2. Make the picture normal with the remote controller.
3. Connect the beam ammeter between terminal of
R623.
4. Coarsely confirm the beam current to approx. 1.7mA.
5. Receive the window pattern with AV input.
6. With the data of DRI-GS and DRI-BS, adjust the
color temperature of the 50% white.
7. Adjust the right dark area of the window to 12300K
with CUT-RS and CUT-GS.
8. Go back to 50% white area to check colour tem-
perature, if out of range, please go back to step (6).
Note 1: Apply this adjustment after aging 30 min or
more with the beam current 1700
±
50_A.
(On the white or green monocolor screen)
2:The colour temperature is based on the ship-
ment destination as shown in Table 2.1 at
page 6-1.
3: Adjust DRI-GC/GW, DRI-BC/BW , CUT-RW/C
and CUT-GW/C as following DATA, after finish-
ing DRI-BS and DRI-GS DATA adjustment.
CUT-RW/C = CUT-RS
CUT-GW/C = CUT-GS
DRI-RW = 32 (FIXED), DRI-RS = 32 (FIXED)
DRI-BC = "DRI-BS"
(For 7500_K, 12300_K, 17000_K and
18000_K Condition)
2 7500K X : 0.300 Y : 0.310
18000K X : 0.255 Y : 0.255
17000K X : 0.261 Y : 0.261
12300K X : 0.272 Y : 0.275
( With Monolta color thermometer
CA-100)
* 12300_K
DRI-GW = "DRI-GS" - 7
DRI-BW = "DRI-BS" - 7
DRI-GC = "DRI-GS" - 7
DRI-RC = 25
* 17000_K & 18000_K
DRI-GW = "DRI-GS" - 7
DRI-BW = "DRI-BS" - 7
DRI-GC = "DRI-GS" - 5
DRI-RC = 27
* 7500_K
DRI-GW = "DRI-GS" - 5
DRI-BW = "DRI-BS" - 5
DRI-GC = "DRI-GS" - 7
DRI-RC = 25