Read Sharp PN-G655E (serv.man3) Service Manual online
PN-G655E
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTION
2 – 19
3) Enter the “SERVICE MENU 2” mode.
4) Select [CALIBRATION] with [
2 ] [ 4 ] buttons, and press [3] but-
ton. The CALIBRATION screen is displayed.
• CALIBRATION screen when PC2/PC3 ANALOG mode
• CALIBRATION screen when AV2 COMPONENT mode
• CALIBRATION screen when AV3 VIDEO mode
5) Select [AUTO CALIBRATION] with [
2 ] and [ 4 ] buttons and press
[
3] button. The calibration is executed and the data are saved to
the EEPROM.
The adjustment result is displayed on the ADC OFFSET1/ADC
OFFSET2/ADC GAIN items.
6) Select [OK] with [
2 ] [ 4 ] buttons, and press [MENU] button. The
CALIBRATION screen is closed.
3-3. FACTORY RESET
Resets the user adjustment value, USAGE TIME and the Operation log
to the factory preset values.
(Note)
When resetting is made, the operation logs are also deleted. If neces-
sary, save the operation logs before resetting.
1) Display the SERVICE MENU 2.
2) Select “FACTORY RESET” with [
2 ] [ 4 ] button, and press [3] but-
ton.
3) Select [ON] with [
1] [3] buttons, and press MENU button.
“RESETTING” is displayed. After completion of initialization, the unit
is booted in the PC1 (digital) mode.
4) Turn the main power switch off and then back on.
3-4. HARDWARE CHECK OPERATION
PROCEDURES
This machine is provided with the function to watch for any abnormality
in the hardware.
in the hardware.
When an abnormality occurs in the hardware (internal power voltage,
backlight, temperature), “SERVICE CALL” message is displayed on the
screen. The power lamp flashes in red.
When only a temperature abnormality occurs, “TEMPERATURE” mes-
sage is displayed on the screen. The power lamp flashes in red and
sage is displayed on the screen. The power lamp flashes in red and
green alternately.
The abnormal position can be located by two methods below.
[Method 1]
<Operating procedure>
1) SERVICE MENU 2 is displayed.
2) Select “HARDWARE CHECK” with [
2 ][ 4 ] buttons, and press [3]
button. “HARDWARE CHECK” menu is displayed.
3) The watch result and the current measurement value of the hard-
ware are displayed.
• Watch result:
OK or NG is displayed.
After turning ON the main power, if an abnor-
mality occurs to be NG once, the NG state is
kept until the main power is turned OFF.
kept until the main power is turned OFF.
• Measurement value: The measurement value at the time when
HARDWARE CHECK menu is displayed is
displayed.
The measurement value at the time when an
The measurement value at the time when an
abnormality occurred is saved in the log data.
*The measurement value of the internal voltage displayed is the A/D
conversion value. The normal range is as shown below.
4) For the countermeasures against NG positions, refer to “7. Hard-
ware check NG” in “CHAPTER 5. TROUBLESHOOTING.”
5) Press MENU button to return to the previous screen, and terminate
the operation.
[Method 2]
<Operating procedure>
1) Send “HTST0000” that is 232C command.
2) Result is returned.
CALIBRATION PC (ANALOG)
AUTO CALIBRATION
ADC OFFSET1
R : 511
B :
G : 511
511
ADC OFFSET2
R : 128
G :
B :
128
128
ADC GAIN
R : 511
511
511
G :
B :
OK
CANCEL
RESET
CALIBRATION COMPONENT
AUTO CALIBRATION
ADC OFFSET1
Y : 511
Cr :
Cb : 511
511
ADC OFFSET2
Y : 128
Cb :
Cr :
128
128
ADC GAIN
Y : 511
511
511
Cb :
Cr :
OK
CANCEL
RESET
CALIBRATION COMPONENT
AUTO CALIBRATION
ADC OFFSET1
: 511
ADC OFFSET2
: 128
ADC GAIN
: 511
OK
CANCEL
RESET
LCD 12V
: Measurement value
174~190
VIDEO 5V
: Measurement value
171~208
AMP 3.3V
: Measurement value
187~213
AMP 9V
: Measurement value
173~190
OK...[MENU]
HARDWARE CHECK
LCD 12V
:
OK
XXX
OK
XXX
VIDEO 5V
:
OK
XXX
AMP 3.3V
:
OK
XXX
AMP 9V
:
OK
XXX
BACKLIGHT
:
OK
XXX
THERMAL1
:
OK
XXX
THERMAL2
:
OK
XXX
THERMAL3
:
SERVICE2
SERVICE1
Watch result
Measurement value
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