White Balance Adjustment; Shipment Condition Setting - Sony PFM-42X1 Service Manual

2-2-3. White Balance Adjustment

After aging the unit about 30 minutes, adjust the color
matrix of each one of the color temperatures of 11000 K,
9300 K, and 6500 K as follows.
1. Preparation of adjustment
1) Equipment : Signal generator (e.g. : VG-854), lumi-
nance meter (e.g. : CA-110)
2) Signals type : If a detailed timing is needed, refer to
Sony Timing Specifications.
PC XGA (1024 x 768 60 Hz)
1080I (Y/Pb/Pr)
480P (Y/Pb/Pr)
NTSC Composite
PAL Composite
480I (NTSC Composite)
575I (PAL Composite)
3) Signal level : 700 mVpp
4) Signal pattern : Full White, 16-step gray pattern
2. Color matrix adjustment
Execute the following programs in the following sequence
: PC → 1080i → 480p → 480i → 575i → NTSC Compos-
ite → PAL Composite.
1) After inputting each signal, adjust Sub-Offset.
. Input 16-step gray pattern.
. Display SERVICE MODE OSD and select the
WHITE BALANCE menu.
. Change Sub-Offset, and adjust the brightness of the
second step of the 16 steps of gray to be 0.5 cm/m
or less.
(Sub-Offset : ± 0.1)
2) Input Full White pattern.
3) Set the values of R-GAIN and R/G/B-OFFSET in the
WHITE BALANCE menu as shown in the following
figure.
PC 1080I 480P
R-GAIN 33 34
R-OFFSET 61 51
G-OFFSET 60 53
B-OFFSET 63 52
2-2
480I 575I NTSC PAL
34 34 34 34 34
51 52 51 57 53
52 52 52 62 57
51 52 51 60 55
4) Adjust the color matrix by changing the values of G-
GAIN and B-GAIN. (Refer to SONY Color Matrix
Specifications)
11000 K : x=276 (± 15), y=282 (± 15)
9300 K : x=283 (± 15), y=298 (± 15)
6500 K : x=313 (± 15), y=329 (± 15)
5) Adjust each of the color temperatures of 11000 K,
9300 K, and 6500 K by repeating steps 3) and 4).

2-2-4. Shipment Condition Setting

Set the shipment condition (Refer to SONY Color Matrix
Specifications.).
1) Display the SERVICE MODE OSD menu.
2) Select the FOR TEST menu, and execute INIT
GOODS.
(When INIT GOODS is completed, the power turns
off and restarts automatically.)
2
PFM-42X1/42X1N