Pioneer AVH-P7800DVD Service Manual онлайн [213/280] 7432

Pioneer AVH-P7800DVD Service Manual онлайн [213/280] 7432
AVH-P7800DVD/UC
213
5678
56
7
8
C
D
F
A
B
E
20
21
22
Video image
verification
Aging
Flicker
verification
Apply a composite video
lamp signal
(monochrome)
input to TP COMP
Any input signal
It test-pattern-outputs
from GDC.
Screen
Screen COM DC data of
EEP-ROM
Check if the gradation changes
smoothly and there is no colored
part on the whole screen.
Leaving it in operation for over 30
minutes.
Use the right and left buttons to
change value to the level where
flicker on the screen is minimized.
This is done to check if the couble
window IC digital out is not
"BRIDGE" or OPEN.
RemarksMeasuring pointInput signalAdjustment item Adjustment point
No
Measuring method and specs.
Preparation for
video image
confirmation
RGB digital output
verification
Composite level
adjustment
Apply a synchronized
signal to TP CSYNC
Apply a white 100%
signal to TP Y,Cr,Cb
(0.70 Vpp ± 1%)
Apply a composite video
10 steps signal to
TP COMP
(1.0 Vpp ± 1%)
CN5301
pin14 31
Register
setting of SA13h
D5 0
31.469 kHz
0.3 V
24 µS
3.3 V
Confirm that each output is "H"
(3.3 V) while image is displayed.
Amplitude of 9th gradation and 0th
gradation shall be 1.77 V ± 0.03 V.
0.3 V(75 ) input
When OSD is displayed in
EEP-ROM adjustment mode, in
which "L" output is mixed the area
with letters, ignore it.
In the following table, SA**h is a sub-address of TC90A96BFG.
17
18
19
DAC jig output
Notes: When the power supply for TC90A96BFG is OFF, be careful not to apply any voltage to its terminals
except for IIC lines(SDA and SCL). The IIC lines can accept a maximum of 5 V.

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