25
DDX7015/7025/7035
DDX7045/7065
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Chroma IC Adjustment (X14-939)
No.
Adjustment Item
Adjustment Method
Measurement
Conditions
Locations (X14)
1
DC/DC SW frequency
Connect a frequency counter to the No.8 pin of IC102 (Check land).
TP925
Input signal
Adjust frequency with VR1(The frequency will be notified later.)
TP100 (GND)
: None
2
DVD output level
In the replay mode, replay TDV-540 Title 2 Chapter 6.
TP653
Observe the checkland with an oscilloscope and set the output
TP654 (GND)
level to 2Vp-p.
3
Chroma
Get into Chroma Adjustment Mode in the Test Mode.
3-A
Chroma VCO
While operating with remote controller, measure the check land
TP303
with frequency counter.
TP944 (GND)
3-B
Brightness
While operating with remote controller, measure the check land
TP885
10 step NTSC
3-C
Contrast
with frequency counter and observe the waveform.
TP944 (GND)
input to X34 AV IN
3-D
Black limiter
3-E
White limiter
3-F
Y GCA (Brightness gain)
3-G
Gamma 1
3-H
Gamma 2
3-I
R sub-brightness
TP884
TP944 (GND)
3-J
B sub-brightness
TP886
TP944 (GND)
3-K
R sub-contrast
TP884
TP944 (GND)
3-L
B sub-contrast
TP886
TP944 (GND)
3-M
V-COM frequency width
TP869
TP944 (GND)
• For adjustment methods on 3-A~3-B, refer to chroma adjustment method.
• As for remote controller operation method, refer to Remote Controller Operation Method.
Remote Controller Operation Method at Chroma
Remote controller uses is the TV/NAVI remote controller AU-
1. While pressing EJECT+SRC on the Unit (X14), press RE-
SET key to get into the Test Mode.
2. By operating on the TEST MODE MENU screen, get into
the Chroma ADJ mode.
At this time, on the upper left corner of the screen [CH : 16
VCO_FREERUN, VAL : 80] OSD display is made. HEX dis-
play.
3. Use 8, 0 on the 10 key to change the setting value. The, the
VAL number on upper-left corner of the screen changes.
4. Press PLAY/PAUSE key and confirm on the setting value.
When confirmed, [CH : 16 VCO_FREERUN, VAL : 80] the
color changes.
When releasing the setting, press on PLAY/PAUSE key
again. When released, the color changes.
5. Use 7, 9 keys on the 10 key to set the next one. The CH
value changes in the upper-left corner. Repeat the same
for Item 3 to 5.
6. When all adjustments are complete, press DIRECT key,
which writes the adjustment values to E2PROM. At the same
time, it is possible to move out of the Chroma Adjustment
mode.
ADJUSTMENT
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