2-11.Saturation Noise Confirmation; 2-12.Double Lighting Level Adjustment - Panasonic AJ-D610WBP Service Manual

2-11. Saturation Noise
Confirmation
BOARD PER AMP, PRE PROCESS
TP TP102 [R] (PRE PROCESS)
TP302 [G] (PRE PROCESS)
TP502 [B] (PRE PROCESS)
ADJUST VR8 [R SUB] (PULSE)
VR9 [G SUB] (PULSE)
VR10 [B SUB] (PULSE)
F NUMBER F5.6 – F4
CHART
Gray Scale (2000 +/- 50 Lux)
M. EQ. Oscilloscope
SPEC.
No saturation noise
1. Confirm that the TP302 (G ch) has no saturation
noise.
2. If there is noise adjust the sub voltage so that the
noise is disappeared.
3. Perform the same confirmation for TP102 (R ch)
and TP502 (B ch).
4. Perform adjustment for 2-7 and 2-11, if any sub
voltage adjustment is done.
NOTE:
If these VRs are adjusted, adjust "2- 7. Bl oom ing
Adj us tm ent" again.
1. Connect a scope CH1 to TP302 (Gch). And set the
2. Connect a scope CH1 to TP102 (Rch). And
3. Perform the same adjustment for TP502 (Bch).
NOTE:
1. Set oscilloscope range to 200mV/div.
2. Level A is defined to window portion as shown
3. If Rch and/or Bch are adjusted, change the
S a t u ra t io n
N o i se
ELE- 8
2-12. Double Lighting Level
Adjustment
BOARD PER AMP, PRE PROCESS
TP TP102 [R] (PRE PROCESS)
TP302 [G] (PRE PROCESS)
TP502 [B] (PRE PROCESS)
ADJUST VR101 [R LVL] (PRE AMP)
VR301 [B LVL] (PRE AMP)
F NUMBER F11+1/2
CHART Gray Scale (2000 +/- 50 Lux)
M. EQ. Oscilloscope
SPEC. R,B ch level = G ch +/-20mV
IRIS position so that level A is 1330mV.
confirm the level A is 1330mV+/-20mV.If it is not
adjust VR101 so that the Level A is in the
specification.
(Do not adjust VR101 if TP102 is in the
specification range.)
If in the specification, do not adjust each VRs.
below.
specification of 2-9 RGB SH Level Adjustment to
666mV +/- 10mV. If out of specification, repeat
adjustments from 2-9 to 2-12 until satisfy each
specification.
W indo w P o r t io n
D C
A