參數(shù)資料
型號： PN22N*
英文描述： 10A High Efficiency DC/DC µModule; Package: LGA; No of Pins: 104; Temperature Range: -40°C to +85°C
中文描述： Monitor_ICs：XC62FP3302 61CC4202 KA555D/TR RYC8220 - 200萬FST3257 52742 S5D2501E19 - D0 52324 33262 TDA16850 7045
文件頁數(shù)： 11/98頁
文件大小： 2244K
4-1-1 Before Making Adjustments
4-1-1 (a) ORIENTATION
When servicing, always face the monitor to the
east.
4-1-1 (b) MAGNETIC FIELDS
Whenever possible, use magnetic field isolation
equipment such as a Helmholtz field to surround
the monitor. If a Helmholtz field is not available,
frequently degauss the unit under test.
Caution:
Other electrical equipment may cause
external magnetic fields which may
interfere with monitor performance.
Use an external degaussing coil to limit magnetic
build up on the monitor. If an external degaussing
coil is not available, use the internal degaussing
circuit. However, do not use the internal
degaussing circuit more than once per 30 minutes.
4-1-1 (c) WARM-UP TIME
The monitor must be on for 30 minutes before
starting alignment. Warm-up time is especially
critical in color temperature and white balance
adjustments.
4-1-1 (d) SIGNAL
Analog, 0.7 Vp-p positive at 75 ohm, internal
termination
Sync: Separate/ Composite
(TTL level negative/ positive)
Sync-on-Green:
Composite sync 0.3 Vp-p negative
(Video 0.7 Vp-p positive)
4-1-1 (e) SCANNING FREQUENCY
Horizontal: 30 kHz to 121 kHz (Automatic)
Vertical:
50 Hz to 185 Hz (Automatic)
Unless otherwise specified, adjust at the
1280 x 1024 mode (H: 91 kHz, V: 85 Hz) signals.
Refer to Table 2-1 on pages 2-2 and 2-3.
4-1-1 (f) HIGH VOLTAGE ADJUSTMENT
Signal:
Display image: Full white
Contrast:
Brightness:
Limit:
Measure the hight voltage level at the anode cap.
High voltage should be within the limit as above.
If the high voltage needs adjustment use the
Softjig.
1280 x 1024 mode (91 kHz/ 85 Hz)
Maximum
Maximum
27.0 kV ± 0.5 kV
4-1-1 (g)G2 (SCREEN) VOLTAGE ADJUSTMENT
Signal:
1280 x 1024 mode (91 kHz/ 85 Hz)
Display image: Full white
Contrast:
Maximum
Brightness:
Maximum
Adjust the Screen VR of the FBT so that the G2
(Screen) Voltage for Toshiba it is 700 V ± 10 V.
4-1-1 (h) CENTER RASTER
Adjust VR401 so that the back raster comes to the
center when you apply a signal of 91 kHz/ 85 Hz.
PN22N*
4-1
4 Alignment and Adjustments
This section of the service manual explains how to make permanent adjustments to the monitor. Direction
is given for adjustment using the monitor Interface Board Ver. 2.0 and software (Softjig).
4-1 Adjustment Conditions
Caution:
Changes made without the Softjig are saved only to the user mode settings. As such, the
settings are not permanently stored and may be inadvertently deleted by the user.
PN22N*
MITSUBISHI
G2
700V
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