DOWNLOAD Sharp LC-37GD1E (serv.man7) Service Manual ↓ Size: 50.81 KB | Pages: 7 in PDF or view online for FREE

Model
LC-37GD1E (serv.man7)
Pages
7
Size
50.81 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Adjustment procedures
File
lc-37gd1e-sm7.pdf
Date

Sharp LC-37GD1E (serv.man7) Service Manual ▷ View online

17
LC-32GD1E
LC-37GD1E
ADJUSTMENT PROCEDURES
The adjustment values are set to the optimum conditions at the factory before shipping.  If a value should become
improper or an adjustment is required due to part replacement, make an adjustment according to the following
procedure.
(On The Display)
1. Preparation
When replacing the E2PROM IC (IC2002, IC2008, IC2208), please note that it must be replaced by a unit.
Applicable unit: DUNTKC268VJ18 / DKEYHC269VJ20 (LC-32GD1E)
DUNTKC268VJ17 / DKEYHC269VJ19 (LC-37GD1E)
2. Adjusting procedure
Entering the adjustment process mode 
 COM BIAS adjustment 
 White balance adjustment (described in the
AVC section)
3. Entering the adjustment process mode
• Connect the AVC and the display using a system cable.
• Turn OFF the display main power (    ).
• While the main power to the display is off, hold down the “P(
Ù
)” key and “        (+)” key on the upper
part of the display and then turn the “MAIN POWER” switch “ON”.  The display will run in the “Display
process mode”.
(“<K>” is displayed in the upper left portion of the screen.)
• Then, pressing any key (
, P or INPUT) will bring you to the first page of the “Display Adjustment mode”.
Multiple lines of red characters appearing on the display indicate that the unit is now in the adjustment process
mode.
4. Exiting the adjustment process mode
• To exit the adjustment process mode after the adjustment is done, unplug the AC power cable from the outlet to
make a forced shutdown.  Do not use the remote controller or the MAIN POWER switch to exit the mode.
(When the power was turned off with the remote controller, once unplug the power cable and plug it again.  In this
case, wait 10 seconds or so before plugging.)
Key
Cursor UP  
'
Cursor DOWN
                    
"
Cursor RIGHT
           û
Cursor LEFT
           Û
  OK
INPUT
P_UP   
     P(
ù
)
P_DOWN  
P(
Ù
)
VOL_UP          (+)
VOL_DOWN
                         (–)
Function 1 (when on the left side of a page)
Moving up by one item or moving to the
previous page (when at the top)
Moving down by one item or moving to the next
page (when at the bottom)
Moving to the right by one item or moving to
another page (in the case of the initial page)
Moving to the left by one item or moving to
another page (in the case of the initial page)
Test pattern off
Moving to the next page
Moving up by one item or moving to the
previous page (when at the top)
Moving down by one item or moving to the next
page (when at the bottom)
Moving to the right by one item or moving to
another page (in the case of the initial page)
Moving to the left by one item or moving to
another page (in the case of the initial page)
Function 2 (when changing a numeric value)
Incrementing the adjustment value by one or
executing the item (in the case of W or R items)
Decrementing the adjustment value by one or
executing the item (in the case of W or R items)
Moving to the right by one item
Moving to the left by one item
Executing the item (in the case of W or R items)
Moving to the next page
Incrementing the adjustment value by one or
executing the item (in the case of W or R items)
Decrementing the adjustment value by one or
executing the item (in the case of W or R items)
Moving to the right by one item
Moving to the left by one item
5. Adjustment process mode key operation table
18
LC-32GD1E
LC-37GD1E
6. Adjustment
6-1. COM BIAS adjustment
Shift to the “COM BIAS” item with the cursor 
'
/
"
key and select a numeric value with the cursor 
Û
/
û
 key.
Changing the numeric value with the cursor 
'
/
"
 key will make appear the test pattern.  Make an adjustment
so that the flicker near the center of the screen is minimized.
Adjust each of the ones, tens and hundreds places so that the flicker is minimized.
6-2. White balance adjustment
The way to enter the adjustment process mode is different.  Please refer to the description given for the AVC
system.
1. Connect the AVC system, start the unit, and then perform a white balance adjustment on the display.
2. Using the cursor 
'
/
key, go to the process adjustment mode page 11 and bring up the adjustment
display  (High side:200 gradations, Low side:48 gradations).
3. Adjust [R GAMMAHI], [G GAMMAHI] and [B GAMMAHI] so that 200-gradation pattern becomes normal.
4. Adjust [R GAMMALO], [G GAMMALO] and [B GAMMALO] so that 48-gradation pattern becomes nomal.
Nomal pattern should be in accordance with the patten of the standard monitor.
Reference: x=0.272, y=0.275 [Minolta CA-210] (200 gradations)
x=0.272, y=0.275 [Minolta CA-210] (48 gradations)
7.Software Upgrade for Monitor Microcomputer
For this model, the software version of the monitor microcomputer can be upgraded via the AVC system. An
SD card is used to upgrade the version. For details of the procedure, method etc., refer to the Service Manual
for TU-32/37GD1E. (AVC SYSTEM)
table of contents of process mode page 0
Adjust each of the ones, tens and 
hundreds places so that the flicker 
is minimized.
SERVICE      S
GRAYLEVEL
   COMBIAS
   VLSBIAS
   L ERR RESET
   LCD
   PATTERN
   MOTOR AND FAN
   OTHER
   VER M301
32/37GD1E
100
155
041
    0
CEEPD
19
LC-32GD1E
LC-37GD1E
8.Lamp error detection
8-1.Feature description
This liquid-crystal colour TV incorporates a lamp error detection feature (lamp error detection) that automatically
turns OFF the power for safety under abnormal lamp or lamp circuit conditions.
If anything is wrong with the lamp or lamp circuit or when the lamp error detection feature is activated for some
reason, the following will result.
1
The power of TV main body is turned OFF about six seconds after it is turned ON.  (The power LED on
the front of the TV turns red from green and keeps blinking in red (ON for 250ms and OFF for 1sec).)
2
If 
1
 occurs five times consecutively, it becomes impossible to turn ON the power.  (The power LED
keeps blinking in red (ON for 250ms and OFF for 1sec).)
8-2.Measures
1).Checking with lamp error detection OFF
While the “MAIN POWER” switch is off, hold down the “P(
Ù
)” and “       (+)” keys and then turn the “MAIN
POWER” on. The display will run in the “Display process mode” (“<K>” will appear.).
      If there is a problem with a lamp or a lamp circuit, the lamp will go out. (The power LED is green.)
      Then, you can check the operation to see if the lamp and lamp circuit are abnormal.
2).Resetting the lamp error count
After you have finished checking whether the lamp and lamp circuit are abnormal, reset the lamp error
count. If a lamp error is detected five consecutive times, the power cannot be turned on.
      Therefore, move to the “L ERR RESET” line, the fourth line on the first page of the“Display adjustment
      mode”, using the “Cursor 
'
/
"
” key. Then, reset the “L ERR RESET” value using the “Cursor 
Û 
û
” key.
      In this case, press the “Cursor 
'
/
"
” key to reset it to "0".
Then perform operation checking and check that the lamp error detection feature is not activated.
table of contents of process mode page 0
Normal values of individual displays
Reset to "0"
SERVICE      S
   GRAYLEVEL
   COMBIAS
   VLSBIAS
   L ERR RESET
   LCD
   PATTERN
   MOTOR AND FAN
   OTHER
   VER M301
32/37GD1E
100
155
041
    0
CEEPD
20
LC-32GD1E
LC-37GD1E
Table of contents of process mode  Page 0
LCD  Page 5
LCD  Page 6
SERVICE  S 
            32/37GD1E 
→GRAYLEVEL 
 1  0  0  
    COMBIAS  
 1  5  5 
 VLSBIAS  
 0  4  1 
 L ERR RESET 
        0 
 LCD 
 PATTERN 
 M O T O R AND FAN 
 OTHER 
  VER M301 CEEP D
LCD6 
→V  H    0  
0 1 5 8 
 V  L    0  
0 9 3 8 
 V  H  3 1  
0 4 1 8 
 V  L  3 1  
0 6 8 6 
 V  H  6 3  
0 4 5 2 
 V  L  6 3  
0 6 1 9 
 V  H  9 5  
0 5 0 3 
 V  L  9 5  
0 5 9 0  
LCD6 
→V  H 1 2 7  
 0 5 2 1 
 V  L  1 2 7   
 0 5 4 2 
 V  H 1 5 9  
 0 5 6 8 
 V  L  1 5 9  
 0 4 9 7 
 V  H 1 9 1  
 0 6 1 8 
 V  L  1 9 1  
 0 4 4 5 
 V  H 2 4 7  
 0 9 1 4 
 V  L  2 4 7  
 0 1 3 3  
LCD  Page 1
LCD  Page 2
LCD  Page 3
LCD3 
→OPC 0           
   0 0  
    OPC 1  
  05 
 OPC 2  
  09 
 OPC 3  
   1 3 
 OPC 4  
   1 8 
 OPC 5  
   2 2 
 OPC 6  
   2 7 
 OPC 7  
   3 1 
 OPC 8  
   3 6
LCD2 
→MODE       PC 
   0 
 QS SW        
     0 
 QS D1      
0 8 2  
    QS D2      
1 0 0 
 QS D3      
1 1 1 
 QS D4      
1 2 3 
 QS D5      
1 3 5 
 QS D6      
1 4 7 
 QS D7      
1 6 2
LCD1 
→MODE          PC          0 
 PWMCTRL   
         7 
 PWMFREQ          1  2  8  9 
 PWMDUTY 1            0000 
    PWMDUTY 2            0000 
 PHASEDIF  
000 
 PCLK1     
   0 
 PCLK2     
   0
LCD  Page 4
LCD4 
→OPC  9   
    4 0 
 OPC 10   
    4  5 
 OPC 11  
    4  9 
 OPC 12  
    5  3 
 OPC 13  
    5  8 
 OPC 14  
    6  2 
 OPC 15  
    6  7 
 OPC 16  
    7  1  
List of process adjustment modes
Page of 7
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Sharp LC-37GD1E (serv.man7) Service Manual ▷ Download

  • DOWNLOAD Sharp LC-37GD1E (serv.man7) Service Manual ↓ Size: 50.81 KB | Pages: 7 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp LC-37GD1E (serv.man7) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp LC-37GD1E (serv.man7) LCD. Information contained in Sharp LC-37GD1E (serv.man7) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.