DOWNLOAD Sharp LC-30AD1E (serv.man8) Service Manual ↓ Size: 15.53 KB | Pages: 4 in PDF or view online for FREE

Model
LC-30AD1E (serv.man8)
Pages
4 Few pages! See other manuals at the bottom of the first or last page.
Size
15.53 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / troubleshooting table
File
lc-30ad1e-sm8.pdf
Date

Sharp LC-30AD1E (serv.man8) Service Manual ▷ View online

24
LC-30AD1E
TROUBLE SHOOTING TABLE
(Display)
YES
NO
NO
YES
NO
NO
YES
YES
YES
YES
NO
NO
YES
NO
No sound or picture comes out.
Does the power LED 
light up in green.
Is the Backlight off?
Perform checking 
around IC2204.
Is "LOSS OF SYNC" 
displayed?
To "No picture comes 
out"
Perform checking 
around IC2208.
Is the power LED 
blinking in red?
Is the AC cord 
normal?
NO
Replace the 
AC cord.
Blinking once?
Blinking twice?
Blinking five times?
Blinking seven times?
To "The backlight does not go on"
Check the power unit.
Check the temperature of the set.
Check the 1-bit amplifier unit.
250ms
1sec
LTD operation (1 cycle)
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
Table of monitor power LED blinking timing at the time of error occurrence
Error type
Cable error
AVC-side power error
Blinking once: Slow
Lamp error
Blinking once: Fast
AVC temperature 
error
Blinking three times
AVC fan error
Blinking four times
Monitor temperature 
error
Blinking five times
Monitor fan error
Blinking six times
Monitor 1-bit error
Blinking seven times
Monitor power error
Blinking twice
25
LC-30AD1E
NO
NO
NO
NO
YES
YES
YES
NO
YES
YES
PATTERN R, G and B become effective only when the monitor is started singly.  Each can produce a solid 
filled screen of 256-level gray scale, which can be used for IC wire connection checking when a certain gray 
scale level is not produced.
Dropout (gray-scale-related)
Set PATTERN1 on the adjustment 
process menu to "2".  Is the gray 
scale pattern displayed correctly?
Check the color signal in question 
with the gray scale test pattern.  Is 
there a problem with the contact 
and resistance between IC4501 
and SC4601-4604?
Check FFC 
connected to 
SC4601-4604.
Perform checking around 
IC4501 and SC4601-4604.
Set PATTERN3 on the adjustment 
process menu to "1" to "3" (the QS 
drive test pattern is displayed).  Is 
the gray scale displayed correctly?
Perform checking around 
IC4702 and IC4902.
Perform checking between 
IC4701 and IC4501.
Perform checking between 
IC4901 and IC4501.
Set PATTERN3 on the adjustment 
process menu to "4".  Is the test 
pattern displayed correctly at 
intervals of one dot?
Set PATTERN3 on the adjustment 
process menu to "5".  Is the test 
pattern displayed correctly at 
intervals of one dot?
Perform checking between SC2201 
and IC2206, between IC2206 and 
IC4701 or between IC2206 and 
IC4901.
YES
NO
NO
YES
YES
YES
NO
NO
NO
No picture comes out.
Is the RSET terminal (pin (3)) 
of IC2206 set to "H"?
Perform checking around X2201 
connected to pin (161) of IC2206.
Is X2201 connected to pin (161) of 
IC2206 oscillating (18.26 MHz)?
Is IC2202 operating (CONFIG 
ROM)?
Perform checking 
around IC2202.
Check X2201 and the 
peripheral circuitry.
Is the clock (91.3 MHz) applied to 
TL2202 (pin (102) of IC2206)?
Is the normal synchronization 
signal is applied to pins (97), 
(96) and (95) of IC2206?
YES
YES
IC2206 is faulty.
Check IC4903 and the ICs 
(IC4701, IC4702, IC4901 and 
IC4902) downstream from it.
Note that the unit should be replaced when the receiver IC (IC2206), HDCP key ROM (IC2208) or microprocessor 
(IC2004) is replaced.
Applicable unit: DKEYHC094FE50
26
LC-30AD1E
YES
No
YES
No
YES
No
Noise is caused to the moving picture when 
the QS drive is set to ON.
Is OSTEMP.AD on the 3rd page of the 
process adjustment mode set to 255?
Is the harness connected correctly 
between the Power PWB and Inverter 
PWB?
Is the input voltage on pin (2) of 
IC2004 (microprocessor) 5V?
TH2001 thermistor 
is faulty.
Check IC4701 and 
IC4901 and the peripheral 
circuitry.
Connect the harness 
correctly or replace it.
Pin (2) of IC2004 
(microprocessor) is faulty.
YES
No
No
YES
YES
No
YES
Check the connection of the high-voltage 
(pin (2)) wire on the side of the blown 
fuse and check that of the counterpart 
high-voltage (pin (2)) wire of the 
fluorescent lamp on the opposite side.
The backlight does not go on.
Is any of the fuses of 
F6551-F6556 
blown?
Is the control signal applied to 
pin (8) (OFL1) and pin (9) 
(OFL2) of P6564?
Is the cord connected correctly 
between the LCD Control PWB and 
Inverter PWB and Power PWB?
Check the peripheral circuitry of 
IC4501 of the LCD Control PWB 
and check the operation of 
Q7701 and Q7702.
Is power supplied to 
Inverter PWB?
Check the Lamp error detection circuit on the Inverter-GND 
PWB.
Check the 15V output on the 
Power PWB.
Check the inverter 
circuit downstream 
from the blown fuse. 
27
LC-30AD1E
YES
No
YES
YES
YES
No
YES
No
No
No
No
Check if the internal/external 
switching relay (RY3901) 
functions correctly.
Is the output signal from the 
1-bit amplifier applied to 
P3903?
Perform checking around 
IC2004, IC3804 and the 1-
bit amplifier.
Are the MUTE circuits 
(Q3804 and Q3805) 
operating?
Is the audio signal applied to 
pin (7) (L-IN) and pin (9) (R-
IN) of P3804?
Perform checking 
around IC3803 and 
IC3808.
Check for the AVC 
System side for output.
Is the audio signal applied to 
pin (13) and pin (20) of 
SC2202 on the Monitor PWB?
Perform checking around Q2012 and 
Q2014 and check the wire between 
Monitor PWB and Audio PWB.
Check if 5V is supplied to the power 
regulator circuit (IC3810, IC3812 and 
IC3816) and pin (2) of P3804.
Is power supplied to each IC 
on the AUDIO PWB?
Is the audio signal applied 
to pin (13) and pin (15) of 
P3803?
YES
YES
YES
No
Check the input/output 
voltage of IC4103.
Perform checking around Q4102 and IC4101.
Is the voltage of emitter side of 
Q4102 about 6V?
The whole screen is whitish (LCD power supply)
Check the power supplies.
Check the power supplies to 
SC4101 and SC4102 in particular.
Remove the FFCs attached to SC4101 
and SC4601- SC4604 (because the 
panel may be broken).
Display

Sharp LC-30AD1E (serv.man8) Service Manual ▷ Download

  • DOWNLOAD Sharp LC-30AD1E (serv.man8) Service Manual ↓ Size: 15.53 KB | Pages: 4 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp LC-30AD1E (serv.man8) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp LC-30AD1E (serv.man8) LCD. Information contained in Sharp LC-30AD1E (serv.man8) 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.