Pioneer AVH-P7800DVD/UC, Руководство по обслуживанию

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AVH-P7800DVD/UC
213
5 6 7 8
5 6
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.
Remarks
Measuring point
Input signal
Adjustment 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
3
1.4
69
kH
z
0
.3 V
24
µ
S
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
Ω
) 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.