Kenwood DDX8017 Service Manual page 41

Test Mode
Adjustment Item
Display
G Gamma 1 CH : 11
Adjustment
H Gamma 2 CH : 12
Adjustment
I R Sub-Brightness CH : 8
Adjustment
J B Sub-Brightness CH : 9
Adjustment
K R Sub-Contrast CH : 14
Adjustment
L B Sub-Contrast CH : 15
Adjustment
M V-COM Amplitude CH : 1
Adjustment
ADJUSTMENT
Adjustment Method
Monitor waveform of 59 pin TP: VG of CN905 with an
oscilloscope and adjust the oscillation width of forward
rotation-side pedestal and forward rotation-side Step 9.
Monitor TP: VG waveform of 59 pin of CN905 with an
oscilloscope and adjust the oscillation width of forward
rotation-side pedestal and forward rotation-side Step 10.
Monitor waveform of 58 pin TP: VR and 59 pin TP: VG of
CN905 with an oscilloscope and adjust so that the pedestal
of Step 1 of the forward rotation side of TP: VR will be
0.1Vpp higher than the pedestal of Step 1 of the forward
rotation side of TP: VG.
Monitor waveform of 60 pin TP: VB and 59 pin TP: VG of
CN905 with an oscilloscope and adjust so that the pedestal
to Step 1 of the forward rotation side of TP: VB will be the
same as the pedestal to Step 1 of the forward rotation
side of TP: VG.
Monitor waveform of 58 pin TP: VR and 59 pin TP: VG of
CN905 with an oscilloscope and adjust so that the pedestal
to Step 9 of the forward rotation side of TP: VR will be
0.1Vpp higher than the pedestal to Step 9 of the forward
rotation side of TP: VG.
Monitor waveform of 60 pin TP: VB and 59 pin TP: VG of
CN905 with an oscilloscope and adjust so that the pedestal
to Step 9 of the forward rotation side of TP: VB will be the
same as the pedestal to Step 9 of the forward rotation
side of TP: VG.
Monitor waveform of 39 pin TP: VCOM of CN905 with an
oscilloscope and adjust the oscillation width of the VCOM
rectangular wave.
DDX8017/8027/8027Y
DDX8037/8047/8067
Adjustment Value
Condition
(Temporary)
3.0V±0.05V Input signal
: None
Input signal
3.3V±0.05V : 10 STEP (NTSC)
1Vpp V/S ratio
: 7:3 (75Ω terminated)
0.1V±0.05V X34 AVIN input
Oscilloscope range
: 500mV/DIV
AC
0V±0.05V
0.1V±0.05V
0V±0.05V
2.15Vpp±0.05V
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