SHARP LC-M3700 - LC-M3710 - WIDE LCD MONITOR - ADJUSTING PROCEDURE TO EACH SECTION
Caution: Take great care not to allow the customer to know the method of entering the process adjustment mode described below. If the setting in the process adjustment mode is changed indiscriminately, an unrecoverable error may be caused.
MAIN PROCESS
- Using the remote control or main body switch, put the unit in a standby state. (The power LED is "Red".)
- Press the "MAIN POWER" button to turn off the power.
- Press the "POWER" button on the display section to turn off the power.
- While pressing the "INPUT" and "MENU" keys on the main body side together, press the "MAIN POWER" switch on the main body to turn on the power.
- If a display such as "1/16" and "N358" is shown in blue characters on one line at the top of the screen several seconds later, the process adjustment mode has been entered. Pressing any of the cursor UP/DOWN/LEFT/RIGHT keys will display the process adjustment items.
- If you fail to enter the process adjustment mode (the same display as in the case of normal startup appears), repeat the above-described steps again.
MONITOR PROCESS
- Using the remote control or main body switch, put the unit in a standby state. (The power LED is "Red".)
- Press the "MAIN POWER" button to turn off the power.
- Press the "POWER" button on the display section to turn off the power.
- While pressing the "INPUT" and "UP" keys on the main body side together, press the "MAIN POWER" switch on the main body to turn on the power. It is also possible to enter the monitor process mode by setting "KOUTEI CHANGR" on the last line of the first page of the main process mode to MONITOR with the VOL +/- key and pressing the ENTER key. To switch from the monitor process mode to the main process mode, set "KOUTEI CHANGR" on the last line of the first page of the monitor process mode to MAIN and press the ENTER key.
KEY OPERATION
MENU: Used to move up by one line.
RETURN: Used to move down by one line.
VOL +/-: Used to change the setting on the selected line
(+1/-1).
Cursor UP/DOWN: Used to scroll by page (Previous/Next).
Cursor RIGHT/LEFT: Used to change the setting on the selected
line (+10/-10).
INPUT: Used to change the input (INPUT1→INPUT2→INPUT3→PC).
ENTER: Used to execute the function.
READING OF PROCESS ADJUSTMENT VALUES
The adjustment values set at the factory before shipping are
stored on the main PWB of this unit (not covering all the items in the process
menu). In repairing the unit, if only replacing the PCI/F unit solves the
problem, you can read the stored adjustment values and therefore all you do is
to adjust some items only.
TO READ THE STORED EX-FACTORY ADJUSTMENT VALUES[backup data]
- Select (page7) EEPROM RECOVER, set it from "OFF" to "ON" with the "VOL" key, and then press the "ENTER"key. If "error" is displayed, you have failed to read the data and therefore have to adjust all the items.
- Adjustments required after reading the stored ex-factory adjustment values (when the data is read successfully)
Ë+Badj1.8V important component operating voltage adjustment
(It is adjusted automatically by pressing the
"ENTER" key after 3.3V adjustment above.)
ËN358 WB adjusting white balance adjustment (Video)
ËPAL WB adjusting white balance adjustment (Video)
ËCOMP 15K WB adjusting white balance adjustment (Component
525i)
ËCOMP 33K WB adjusting white balance adjustment (Component
hi-vision)
ADJUSTMENTS
Before entering the process adjustment mode, reset all the
user settings. (Execute Menu [Video
Adjustment]-|[Reset].)
Analog adjustment: Voltage adjustment.- 3.3V adjustment.
- page2 +BAdj3.3V (NTSC color bar received)
- Connect a voltmeter to TP4 of the PC I/F unit and adjust the voltage to 3.30±0.01V.
- 1.8V adjustment.
- page2 +BAdj1.8V.
PAL SIGNAL ADJUSTMENT
Signal input. Using
a signal generator, feed PAL split field color bars (containing 100% white and
having color saturation of 75%) to the video signal input terminal of INPUT1 or INPUT2.
Setting: Set the
color system is to PAL by selecting a PAL source.
MAIN PAL Y gain adjustment.
- Page3 PAL Y GAIN
- Using pin (1) of P802, adjust the gain to 0.70±0.025Vp-p.
MAIN PAL color density adjustment.
- PAL CB GAIN
- Using pin (3) of P802, make adjustment so that the interval indicated in the figure below becomes 0.53±0.025Vp-p.
- MAIN PAL Cr level adjustment.
- Using pin (5) of P802, make adjustment so that the interval indicated in the figure below becomes 0.53±0.025Vp-p.
- MAIN CONTRAST adjustment.
- CONTRAST 15k
- Using the IC8805 output (TP8805), adjust the contrast to 0.90±0.025Vp-p above the pedestal.
SECAM SIGNAL ADJUSTMENT
- Signal input: Using a signal generator, feed SECAM split field color bars (containing 100% white and having color saturation of 75%) to the video signal input terminal of INPUT1 or INPUT2.
- Setting: Set the color system to SECAM.
- SECAM Y GAIN adjustment. Page4 SECAM Y GAIN.
- Using pin (1) of P802, adjust the gain to 0.70±0.025Vp-p.
SECAM COLOR DENSITY adjustment
- Page4: SECAM CB GAIN
- Using pin (3) of P802, make adjustment so that the interval indicated in the figure below becomes 0.53±0.025Vp-p.
- MAIN SECAM Cr level adjustment.
- SECAM CR GAIN
- Using pin (5) of P802, make adjustment so that the interval indicated in the figure below becomes 0.53±0.025Vp-p.
NT358 SIGNAL ADJUSTMENT
COMPONENT 15kHz & COMPONENT HDTV SIGNAL ADJUSTMENT
