Circuit Adjustments; C Board Adjustment; Signal Input; Adjustment Of Rgb Bias And Gain - Sony VPL-X600U Service Manual

4-1. C BOARD ADJUSTMENT

TP5105
TP5106
CN5101
1 9

4-1-1. Signal Input

CN5101; 4 pin
RED
CN5101; 6 pin
GREEN
CN5101; 8 pin
BLUE
CN5008: The !\ pin is H Sync that is input
HD
to the BB board.
CN5008: The !. pin is H Sync that is output
from the BB board.
CN5008: The ![ pin is V Sync that is input
VD
to the BB board.
CN5008: The !' pin is V Sync that is output
from the BB board.
CN5008; @., #/ pin
CLOCK
CN5008; @\ pin
CLK12
Signal specifications
0.650 ± 0.03 Vp-p without Sync (75Ω terminal)
RED
GREEN 0.650 ± 0.03 Vp-p without Sync (75Ω terminal)
0.650 ± 0.03 Vp-p without Sync (75Ω terminal)
BLUE
HD TTL Level
VD TTL Level
CLOCK PECL Level
CLK12 TTL Level
VPL-X600
SECTION 4

CIRCUIT ADJUSTMENTS

(A SIDE)
TP5104
CN5008
Negative polarity (50.61 kHz)
Negative polarity (62.79 kHz)
68 MHz (Input the opposite
phase.)
Input the above CLOCK after
dividing it into 12 equal parts.
(B SIDE)
1

4-1-2. Adjustment of RGB Bias and Gain

Make adjustment so that TP5104, TP5105, and TP5106
will all be as shown below.
2Vdc ± 0.02V
1. RED Bias adjustment
Change the level of TP5106 to 2Vdc as shown above by
changing the $[ pin of IC5105.
2. RED Gain adjustment
Change the level of TP5106 to 1Vp-p as shown above by
changing the $/ pin of IC5105.
3. GREEN Bias adjustment
Change the level of TP5105 to 2Vdc as shown above by
changing the $= pin of IC5105.
4. GREEN Gain adjustment
Change the level of TP5105 to 1Vp-p as shown above by
changing the #. pin of IC5105.
5. BLUE Bias adjustment
Change the level of TP5104 to 2Vdc as shown above by
changing the $- pin of IC5105.
6. BLUE Gain adjustment
Change the level of TP5104 to 1Vp-p as shown above by
changing the #, pin of IC5105.
12 1
13 48
IC5105
24 37
25 36
1Vp-p ± 0.02V
GND
4-1