Sony KL-37W2U, Service Manual

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KL-37W2/37W2K
RM-838
KL-50W2/50W2K/50W2U
RM-838
3-4. REGISTRATION ADJUSTMENT
Preparation
• Aspect ratio ...................................... 16:9
• Image quality adjusting menu .......... Standard
Note: In adjusting the registration, the registration fixing block is
secured with an adhesive, and therefore the PANEL
BLOCK ASSY is required.
• Tools and Kit
Hex. wrench keys (2 mm, 1.5 mm)
PANEL BLOCK ASSY (Refer to SECTION 5. EX-
PLODED VIEWS)
1. Entering G monochrome crosshatch signal or B monochrome
crosshatch signal, adjust the registration between B and G.
Overlay B image on the G image as shown, while turning the
registration adjusting screws in the order of
θ →
X
→
Y.
2. Enter full black signal to the B panel, then the R monochrome
crosshatch signal to adjust the registration of R and G.
3. Tighten tentatively the registration fixing screws on the R and
B panels, and secure the registration blocks A and B with an
adhesive.
4. Tighten the registration fixing screws.
X adjusting
screw
Fixing screw
(2mm)
Registration block A
Y adjusting screw
θ
adjusting
screw
Registration
block B
G
B
q
Adjust the lower right as rotational reference
G
B
X
Y
B
G
X adjustment (horizontal)
Y adjustment (vertical)
within specification?
q adjustment
No
Yes
Fix the registration
LENS FOCUS ADJUSTMENT
1. Loose screw of LENS focus.
2. Adjust LENZ focus so that best focus.
3-5. C BOARD ADJUSTMENT
1. PLL f0 Adjustment
(1) WIDE Mode
1) Change to “WIDE Mode”.
2) Input to monoscope signal.
3) Change “H. SYNC input” CN5202 1pin input to open (no
signal).
4) Connect 100
Ω
resister between 2pin of IC5004 and
TP5009, then connect frequency counter to 1pin of
IC5004.
5) Turn L5002 and adjust to 13.67
±
0.1 MHz.
6) Input H. SYNC for PAL double speed.
7) Confirm that the waveform for TP5007 <RPD2> shall be
Fig.
13.67
±
0.1 MHz
2.3 ± 0.3 V
31.78 µs
(2) 4.3 Mode
1) Change to “4 : 3 Mode”.
2) Input to monoscope signal.
3) Change H. SYNC CN5202 1pin input to open (no signal).
4) Connect 100
Ω
resister between 2pin of IC5004 and
TP5009, then connect frequency counter to 1pin of
IC5004.
5) Turn L5004 and Adjust to 10.22
±
0.05 MHz.
6) Input H. SYNC for PAL double speed.
7) Confirm that the waveform of TP5004 <RPD1> shall be
Fig.
10.22
±
0.05 MHz
2.5 ± 0.3 V
2. r curve adjustment
(1) Change to “WIDE Mode”.
(2) Input PAL double speed signal 10 step.
2.0 ± 0.02 Vp-p
2.7 ± 0.02 V