DOWNLOAD Sharp LC-32P55E (serv.man40) Service Manual ↓ Size: 12.73 MB | Pages: 60 in PDF or view online for FREE

Model
LC-32P55E (serv.man40)
Pages
60
Size
12.73 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / pages 1-60
File
lc-32p55e-sm40.pdf
Date

Sharp LC-32P55E (serv.man40) Service Manual ▷ View online

21
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
5.4. PAL Signal & Tuner Adjustment
LC-26P50E
LC-32P50E
LC-37P50E
30
Adjustment point Adjustment conditions
Adjustment procedure
1
Setting
[Signal]
PAL
Full Field Color Bar
Composite or RF signal
[Terminal]
EXT3 VIDEO IN
TUNER
2
Auto adjustment Adjustment process page 3
performance
» Feed the PAL full field color bar signal (75% color saturation) to EXT3
VIDEO IN.
» Feed the RF signal (PAL color bar) to TUNER.
» Make sure the PAL color bar pattern (E-12) has the sync level of 7:3 with
the picture level.
Bring the cursor on [ËPAL +  TUNER ADJ] and press [OK].
[ËPAL +  TUNER ADJ OK] 
appears when finished.
(4) PAL signal & tuner adjustment
[E-12CH]
�100% white
�100% white
[VIDEO IN SIGNAL]
(5) SECAM signal adjustment
(6) N358 signal adjustment
Adjustment point Adjustment conditions
Adjustment procedure
1
Adjustment
[Signal]
SECAM
Full Field Color Bar
[Terminal]
EXT3 VIDEO IN
2
Auto adjustment Adjustment process page 3
performance
» Feed the SECAM full field color bar signal (75% color saturation) to
EXT3 VIDEO IN.
Bring the cursor on [ËSECAM ADJ] and press [OK].
[ËSECAM ADJ OK] appears when finished.
100% white ↑
Black
Adjustment point Adjustment conditions
Adjustment procedure
1
Adjustment
[Signal]
N358
Full Field Color Bar
[Terminal]
EXT3 VIDEO IN
2
Auto adjustment Adjustment process page 3
performance
» Feed the N358 full field color bar signal (75% color saturation) to EXT3
VIDEO IN.
Bring the cursor on [ËN358 ADJ] and press [OK].
[ËN358 ADJ OK] appears when finished.
↑100% white
75% color bar
5.5. ADC Adjustment (Component 15K)
LC-26P50E
LC-32P50E
LC-37P50E
31
(7) ADC adjustment (Component 15K)
(8) ADC adjustment (Component 33K)
(9) HDMI signal adjustment
Adjustment point Adjustment conditions
Adjustment procedure
1
Adjustment
[Signal] (576i/50)
COMP15K, 50Hz
100%Full Field Color Bar
[Terminal]
EXT4 [COMPONENT]
2
Auto adjustment Adjustment process page 4
performance
» Feed the COMPONENT 15K 100% full field color bar signal (100% color
saturation) to EXT4 COMPONENT IN.
Bring the cursor on [ËCOMP15K ADJ] and press [OK].
[ËCOMP15K ADJ OK] appears when finished.
Adjustment point Adjustment conditions
Adjustment procedure
1
Adjustment
[Signal]
COMP33K, 60Hz
100%Full Field Color Bar
[Terminal]
EXT3 COMPONENT IN
2
Auto adjustment Adjustment process page 5
performance
» Feed the COMPONENT 33K 100% full field color bar signal (100% color
saturation) to EXT3 COMPONENT IN.
Bring the cursor on [ËHDTV ADJ] and press [OK].
[ËHDTV ADJ OK] appears when finished.
Adjustment point Adjustment conditions
Adjustment procedure
1
Adjustment
Recommended signal
generator:
Leader Electronics-
made LT448
2
Auto adjustment Adjustment process page 6
» Set the output signal to 1080i/59.94 (30sF) RGB digital one.
» Set the signal to full color bar (100% saturation) one. 8 bars with the
rightmost one in black. Dynamic range: min 16 to max. 235.
» Feed the signal to HDMI IN from the signal generator's DVI terminal
through the DVI-HDMI conversion cable.
Bring the cursor on [ËHDMI ADJ] and press [OK].
[ËHDMI ADJ OK] appears when finished.
100% white ↑
Black
100% white ↑
Black
100% white ↑
Black
6 White Balance Adjustment
Adjustment procedure Page 7/11 shows the value of adjustment gradation (IN value) and Adjustmnet procedure Page 
8/11 & 9/11 show adj. offset value (initial value : 0). White balance adjustment is executed adjusting the adj. offset value, 
indicated on Page 8/11 & 9/11.
Condition of the inspection: • Backlight: MAX (+8) [DYNAMIC]
 
 
 
      
  • Colorimeter at screen centre
Adjustment reference device: Minolta CA-210
Adjustment spec.  ±0.004,     Inspection spec. : ±0.006   (GAMMA 1)
Adjustment spec.  ±0.002,     Inspection spec. : ±0.004   (GAMMA 2...6)
  
Adjustment: Check that the values on page 7/11 of process adjustment are set as below. If not, change them accor-
dingly. 
22
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
M GAMMA IN 1
160
M GAMMA IN 2
320
M GAMMA IN 3
480
M GAMMA IN 4
640
M GAMMA IN 5 
800
M GAMMA IN 6
960
1- Display the current adjustment status at point 6. (Page 9/11 of process adjustment)
The pattern for checking the adjustment status is toggled by pressing the “6” button on the remote control.(Normal 
OSD display -> “6” -> pattern for check (OSD disappears) -> “6” -> normal OSD display -> …)
2- Read the value of the luminance meter.
3- Change M GAMMA R6/M GAMMA B6 (adjustment offset value) on page 9/11 of process adjustment so that the 
values of the luminance meter approach 
x = 0.2757 and y = 0.2825.
(Basically, G is not changed. If adjustment fails only with R and B, then G should be reduced. In this case, the weaker 
of R and B must be fixed.)
4- If G is changed in step “3”, change the values of M GAMMA G1 - M GAMMA G5 on pages 8/11 and 9/11 of process 
adjustment as follows. When not changed, go to step “5”.
Offset value of M GAMMA G1 = (Offset value of M GAMMA G6)*(160/960)
   Offset value of M GAMMA G2 = (Offset value of M GAMMA G6)*(320/960)
Offset value of M GAMMA G3 = (Offset value of M GAMMA G6)*(480/960)
Offset value of M GAMMA G4 = (Offset value of M GAMMA G6)*(640/960)
Offset value of M GAMMA G5 = (Offset value of M GAMMA G6)*(800/960)
5-Display the adjustment status of the current point 5. (Each time the “5” button on the remote control is pressed, the 
adjustment status check pattern is toggled.)
(Normal OSD display -> “5” -> Pattern display (OSD disappears) -> “5” -> Normal OSD display ->…)
Change M GAMMA R5/M GAMMA B5 (adjustment offset value) on page 9/11 of process adjustment so that the va-
lues of the luminance meter approach 
x = 0.272 and y = 0.277.
6- Repeat step “5” for GAMMA points 4, 3, 2, and 1.
   
7 QS Temperature NVM Data Confirmation
If during servicing of the LCD TV set, by software upgrading or by clearing NVM, it’s necessary check QS Temperature 
data following the method described below:
Enter in Service Mode (Factory A). 
Enter in Factory B page 1/25, by pressing “i+” key in normal R/C. 
Go to page 24/25 by pressing twice “Cursor UP” key. 
Verify and in case necessary modify according the attached list, “QS_D1” to “QS_D7” values, depending of the screen 
size.
26 inch
32 inch
37 inch
QS_D1
58
74
51
QS_D2
76
89
72
QS_D3
92
101
90
QS_D4
105
112
106
QS_D5
118
123
121
QS_D6
254
133
254
QS_D7
255
255
255
NOTE:
-Use “P UP” or “P DOWN” for moving “up” or “down” inside the Service page.
-Use “VOL +” or “VOL -” for modifying data in “+1” or “-1” unit inside the Service page.
-Use “CURSOR RIGHT” or “CURSOR LEFT” for modifying data in “+10” or “-10” units inside the Service page.
23
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
8 Initialization to factory settings
LC-26P50E
LC-32P50E
LC-37P50E
33
6) Display the current adjustment status at point 1. (Press the ”1” button on the remote control to toggle between
normal display and adjustment status display [normal display � ”1” � adjustment status display � ”1” � normal
display � ...].)
7) Check the brightness values using the luminance meter.
8) Change M GAMMA R1 and M GAMMA B1 on page 10/12 of process adjustment so that the brightness becomes
closest to x= 0.272 and y= 0.277.
9) Repeat step 6) to check the values. Repeat the steps until the brightness becomes closest to x= 0.272 and
y= 0.277.
10) Repeat steps 6) - 9) for points 2, 3, 4 and 5.
[W/B adjustment reference value]
Point 1 - 6 reference value      x= 0.272   y= 0.277
9.  Initialization to factory settings
Adjustment item
Adjustment conditions
Adjustment procedure
1
Factory settings
See to below caution
» Enter the adjustment process mode.
» Bring the cursor on to [INDUSTRY INIT] on page 2/11.
» Use the [Volume + -] key to select a region from [EURO/UK/ITALY/
FRANCE/RUSSIA] and press [ENTER]. “EXECUTING” appears and
initialization starts.After a while, “***OK***” appears and the setting
is complete.
Note: Never turn the power off during initialization.
The following settings will be back to their factory ones.
1. User settings
2. Channel data (e.g. broadcast frequencies)
3. Password data
After adjustments, exit the adjustment process mode.
To exit the adjustment process mode, unplug the AC power cord from the outlet to forcibly turn off the power.
When the power is turned off with the remote control, unplug the AC power cord and plug it back in (wait
approximately 10 seconds before plugging in the AC power cord).
Caution: When the factory settings have been made, all user setting data, including the channel settings, are
initialized. (The adjustments done in the adjustment process mode are not initialized.) Keep this in
mind when initializing these settings.
9 Lamp error detection
9.1. Functional description
This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety when the
lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the
following occur.
1- The main unit of television is turned OFF 5 seconds after it is turned ON. (The power LED on the front side of TV
turns from green to red.)
2 - If the situation “1” happens 5 times sequentially, television can not be turned ON. (The power LED remains red.)
9.2 Countermeasures
When television is turned OFF by the lamp error detection mentioned above, it enters the adjustment process with
the power LED red. Entering the adjustment process turns OFF the error detection and turns ON TV. This enables 
the operation check to detect errors in the lamp or lamp circuit.
Check whether “L ERROR RESET” on point 7, page 10/11 of the adjustment process is 1 or more. If it is 1 or more, 
it indicates the lamp error detection was executed. After confirming that the lamp or lamp circuit is normal,  reset the 
lamp error counter pushing “OK” in the R/C. After resetting counter the label  “***OK***”  appears on Screen.
9.3. Reset  standby  cause error list
After confirming that the lamp error counter has been erased, select “STAND BY CAUSE RESET” on point 3, page 
10/11 of the adjustment process and select ON using the right cursor. For execute press “OK” in the R/C and the     
label “***OK***” appears on Screen. 
24
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
SOFTWARE UPDATING
There are 2 methods to update software in the VCTp: I2C method and RS-232C method.
· 
RS-232C method is allowed when the TV is working properly and the action should be only software upgrade.
· 
I2C method is required when the VCTp flash is empty or corrupted (it means, any software inside IC running).
1 RS-232C Method Description
The hardware tools requirement are:
1. A Modem-null (Cross type) DB9 female to DB9 female cable.
2. An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ)
3. Make the connections as indicated in the figure:
Software requirements :
To upgrade VCTp software from RS-232C external connector is necessary to use a Tera Term (Pro) free software. 
 
The URL of Tera Term home page is: 
 
http://hp.vector.co.jp/authors/VA002416/teraterm.html
 
(The address may be changed in future)
Tera Term (Pro) supported operating systems:
 
MS-Windows 95 or upper
 
MS-Windows NT 3.5 and 4.0 or upper
Note.- For Windows 3.1 use Tera Term version 1.X.
Copy all the distribution files to an empty floppy disk or temporary directory (for example C:\ TEMP ).
Run SETUP.EXE and follow the instruction given by it.
After the installation, the distribution files are no longer needed, you can delete them or may keep them in the floppy 
disk.
How to use Tera Term Pro :
When the Tera Term (Pro) program is used, it’s necessary to configure some settings. Follows next action to config-
ure the connection:
RS-232C METHOD DESCRIPTION. 
The hardware tools requirement are: 
1.  A Modem-null (Cross type) DB9 female to DB9 female cable. 
2.  An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ) 
3.  Make the connections as indicated in the figure: 
Before  using  RS-232C  updating  method  is  necessary  to  configure  a  Terminal  PC  software. 
HyperTerminal  has  been  selected  as  a  Terminal  software  because  it’s  include  in  all  Windows 
versions  as  an  accessory,  and  you  can  find  it  inside  “Accessories\Communications”  folder.  For 
this reason, please follow carefully the next steps: 
1.  First  time  HyperTerminal  is  used,  it’s  necessary  to 
configure some settings. Follows next action to configure 
two  connection:  low  speed  (9600bps)  and  high  speed 
(115200bps).
2.  Create a New Connection file with name “P55_9600bps”. 
3.  Select  a  free  COM  port    and  select  the  Port  Settings 
properties as follows: 
Computer 
TV set
Select   Setup � serial port � O.K.
Appear a follow screen. 
Select a follow settings:
 Serial port to use: COM x 
       Baud rate: 9600 
       Data: 8 bits 
       Parity : none 
       Stop: 1 bit 
       Flow control: none 
Click O.K. 
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