Pre Process; R,G,B Pedestal Adjustment; Ire Abb Confirmation - Panasonic AJ-D610WBP Service Manual

5. PRE PROCESS

5-1. R,G,B PEDESTAL Adjustment

BOARD PRE PROCESS, SYNC
TP103[R],TP303[G],TP503[B]
TP (PRE PROCESS)
TP3206[HD] (SYNC)
VR103[R PED] (PRE PROCESS)
VR303[G PED] (PRE PROCESS)
ADJUST
VR503[B PED] (PRE PROCESS)
EVR
F.NUMBER -
MODE CAM ON
M. EQ.
Oscilloscope
SPEC. A = 0 +/- 50mV
1. Set the EVR.
COM:[1E] DATA:[20] ADR:[00]
2. Connect a scope to TP3206 (SYNC) for trigger.
3. Connect a scope to TP103 and adjust VR103 so
that the center of the noise of signal period and
BLK period are the same.
4. Connect a scope to TP303 and adjust VR303 so
that the center of the noise of signal period and
BLK period are the same.
5. Connect a scope to TP503 and adjust VR503 so
that the center of the noise of signal period and
BLK period are the same.
A
BLK
BLK
[Enter]
BLK
Center of the noise

5-2. 0 IRE ABB Confirmation

BOARD CAM SYSCON
TP CAM OUT ( 75 ohm termination)
ADJUST
EVR
F.NUMBER -
MODE
-
M. EQ. Vector Scope
SPEC. Center of Vector = Center of Vector Scope
1. Set the EVR.
COM:[1E] DATA:[20] ADR:[00][Enter]
(GAIN L:0dB, KNEE:OFF, PED PRESET:2.0V)
COM:[1E] DATA:[21] ADR:[00][Enter]
(GAIN L M H:0dB, KNEE:OFF, 0IRE ABB SET)
2. Operate the ABB.
3. Connect a Vector Scope then set the gain to Max,
Confirm the black dot is on the origin of the Vector
Scope.
4. Continue next adjustment with this setting.
*Observe the vector signal with vector scope gain
MAX
ELE- 25