Sharp LC-26LE430E Service Manual ▷ View online
2008-03-14
LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E
45
[3] SOFTWARE UPGRADE PROCEDURE
Sharp model Firmware upgrade SOP by USB flash drives
Flow chart
Step
Photo
Remark
1. Equipment and
warm-up
warm-up
1、USB flash drives(need USB2.0)
2、Upgrade firmware
2、Upgrade firmware
Need
USB2.0
2.Upgrade step
1、 Copy the firmware from your computer to the
USB flash drives.
USB flash drives.
2、Change firmware name to upgrade.pkg
Please check the firmware name
again before rework.
again before rework.
3、AC ON（Figure3.1、Figure3.2）
(3.1)
(3.2)
4、Plug the USB flash drives into the USB port
(service port) on the side I/O port of TV.(Figure 3.3)
(service port) on the side I/O port of TV.(Figure 3.3)
(3.3)
5、DC ON（You can use Keypad or Remote control
power key）
power key）
6、When display Upgrade MENU (Figure 3.4),
select “Yes” by remote control to implement update
firmware
select “Yes” by remote control to implement update
firmware
(3.4)
If there is no display upgrade
MENU,can you DC ON/OFF once
more
MENU,can you DC ON/OFF once
more
7、When finished upgrade 100%,Please remove the
USB flash drives then press “Power” to renew the
TV(Figure3.5)
USB flash drives then press “Power” to renew the
TV(Figure3.5)
(3.5)
8、Press “MENU”+1999 + “PRE PR” to enter factory
Menu by remote control. Then select “2.Main MCU
Ver” to check upgrade firmware Version(Figure3.6)
Menu by remote control. Then select “2.Main MCU
Ver” to check upgrade firmware Version(Figure3.6)
(3.6)
9、Implement “Exit” Icon to exit factory Menu . After
exit factory mode, pls power off then turn off the AC
power. congratulation, upgrade step is finish.
exit factory mode, pls power off then turn off the AC
power. congratulation, upgrade step is finish.
LC-19LE430E, LC-22LE430E, LC-26LE430E, LC-32LE430E
46
CHAPTER 4.
TROUBLESHOOTING TABLE
[1] POWER BOARD TROUBLESHOOTING TABLE
19" TROUBLESHOOTING TABLE
Power unit operation check.
↓
LINE_FILTER_UNIT:
↓ YES
POWER_UNIT
↓YES
↓YES
↓YES
↓YES
↓YES
Are the power cord and harness in the unit properly connected?
NO
Connect the power cord and harness properly, and turn on the
power.
power.
Is F9901/F9902 normal?
NO
LINE_FILTER_UNIT:
Isn't TH9901, L9902, FB9902, and FB9903 out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
POWER_UNIT:
BD9901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Isn't TH9901, L9902, FB9902, and FB9903 out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
POWER_UNIT:
BD9901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Is (+18V) applied to pin (6) of IC9101 output? (Set the main power
SW to ON.)
SW to ON.)
Does the IC9101 circuit operate normally?
(D9103, IC9102, IC9101, Q9103 and etc. And, the circuit around
the protection circuit etc. is checked.)
(D9103, IC9102, IC9101, Q9103 and etc. And, the circuit around
the protection circuit etc. is checked.)
NO
Is a voltage of +5.2V applied to pin (4,5) of connector (CN9102)?
(Set the main power SW to ON.)
(Set the main power SW to ON.)
Does the switching circuit operate normally?
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9105, L9104, C9121, etc.)
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9105, L9104, C9121, etc.)
NO
Are +16V output applied to pin (9, 10) of connector (CN9102) as for
the power on/off switch when it is on?
the power on/off switch when it is on?
NO
Does the switching circuit operate normally?
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9102, L9103, C9103, etc.),
and the protection circuit.
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9102, L9103, C9103, etc.),
and the protection circuit.
Similarly, is +16V & +5.2V output as for the power on/off switch
when it is on?
when it is on?
NO
Check IC9101 circuit of Q9103, T9101 etc.
Are +40V output as for the power on/off switch when it is on?
NO
Does the LED boost circuit operate normally?
Check circuit around the second side (L8501, IC8501, Q8501,
D8501 etc.)
Check circuit around the second side (L8501, IC8501, Q8501,
D8501 etc.)
2008-03-14
LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E
47
22" TROUBLESHOOTING TABLE
Power unit operation check.
↓
LINE_FILTER_UNIT:
↓ YES
POWER_UNIT
↓YES
↓YES
↓YES
↓YES
↓YES
Are the power cord and harness in the unit properly connected?
NO
Connect the power cord and harness properly, and turn on the
power.
power.
Is F9901/F9902 normal?
NO
LINE_FILTER_UNIT:
Isn't TH9901, L9902, FB9902, and FB9903 out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
POWER_UNIT:
BD9901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Isn't TH9901, L9902, FB9902, and FB9903 out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
POWER_UNIT:
BD9901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Is (+18V) applied to pin (6) of IC9101 output? (Set the main power
SW to ON.)
SW to ON.)
Does the IC9101 circuit operate normally?
(D9103, IC9102, IC9101, Q9103 and etc. And, the circuit around
the protection circuit etc. is checked.)
(D9103, IC9102, IC9101, Q9103 and etc. And, the circuit around
the protection circuit etc. is checked.)
NO
Is a voltage of +5.2V applied to pin (4,5) of connector (CN9102)?
(Set the main power SW to ON.)
(Set the main power SW to ON.)
Does the switching circuit operate normally?
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9105, L9104, C9121, etc.)
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9105, L9104, C9121, etc.)
NO
Are +16V output applied to pin (9, 10) of connector (CN9102) as for
the power on/off switch when it is on?
the power on/off switch when it is on?
NO
Does the switching circuit operate normally?
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9102, L9103, C9103, etc.),
and the protection circuit.
Check circuit around the primary side (T9101, IC9101, D9101,
ZD9106, etc.), the secondary side (D9102, L9103, C9103, etc.),
and the protection circuit.
Similarly, is +16V & +5.2V output as for the power on/off switch
when it is on?
when it is on?
NO
Check IC9101 circuit of Q9103, T9101 etc.
Are +60V output as for the power on/off switch when it is on?
NO
Does the LED boost circuit operate normally?
Check circuit around the second side (L8501, IC8501, Q8501,
D8501 etc.)
Check circuit around the second side (L8501, IC8501, Q8501,
D8501 etc.)
LC-19LE430E, LC-22LE430E, LC-26LE430E, LC-32LE430E
48
26″ TROUBLESHOOTING TABLE
Power unit operation check.
↓
LINE_FILTER_UNIT:
↓ YES
POWER_UNIT
↓YES
↓YES
↓YES
↓YES
Are the power cord and harness in the unit properly connected?
NO
Connect the power cord and harness properly, and turn on the
power.
power.
Is F9901/F9902 normal?
NO
LINE_FILTER_UNIT:
Isn't NR9901, L9903, L9905, FB9902, and FB9903 out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
POWER_UNIT:
BD9901, FB9901 etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Isn't NR9901, L9903, L9905, FB9902, and FB9903 out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
POWER_UNIT:
BD9901, FB9901 etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Is (+20V) applied to pin (6) of IC9101 output? (Set the main power
SW to ON.)
SW to ON.)
Does the IC9101 circuit operate normally?
(D9105, IC9102, IC9101, Q9105 and etc. And, the circuit around
the protection circuit etc. is checked.)
(D9105, IC9102, IC9101, Q9105 and etc. And, the circuit around
the protection circuit etc. is checked.)
NO
Is a voltage of +5.2V applied to pin (1, 3) of connector (CN9105)?
(Set the main power SW to ON.)
(Set the main power SW to ON.)
Does the switching circuit operate normally?
Check circuit around the primary side (T9101, IC9101, D9105,
D9102 etc.), the secondary side (D9103, L9102, C9110, etc.)
Check circuit around the primary side (T9101, IC9101, D9105,
D9102 etc.), the secondary side (D9103, L9102, C9110, etc.)
NO
Are +24V output applied to pin (5, 6) of connector (CN9105) as for
the power on/off switch when it is on?
the power on/off switch when it is on?
NO
Does the switching circuit operate normally?
Check circuit around the primary side (T9101, IC9101, D9105,
D9102, etc.), the secondary side (D9101, L9101, C9107, etc.),
and the protection circuit.
Check circuit around the primary side (T9101, IC9101, D9105,
D9102, etc.), the secondary side (D9101, L9101, C9107, etc.),
and the protection circuit.
Similarly, is +12V output as for the power on/off switch when it is
on?
on?
NO
Check IC9401 circuit of D9402, L9401 etc.
Click on the first or last page to see other LC-26LE430E service manuals if exist.