Sharp LL-H1513 Service Manual ▷ View online
PC-UM10M
LL-H1513-E DISASSEMBLY AND ASSEMBLY
3 – 2
2-2. Separation of the LCD section and the display mask
section
1. Remove three screws
1
, and separate the LCD section
2
from the display mask section
3
.
2-3. Inverter PWB and LCD unit disassembly
1. Remove three screws
1
and two screws
2
, and remove the
LCD base angle
3
.
2. Remove two connector disconnection prevention sheets
4
,
and remove the connector
5
at 5 positions.
3. Remove four screws
6
, and remove the inverter PWB
7
.
4. Remove two screws
8
, and remove the LCD angle
9
.
5. Remove the connector
F
at two positions from the LCD unit
G
.
2-4. Key PWB disassembly
1.
Remove nine screws
1
, and remove the key SW angle
2
.
2.
Remove the connector
4
from the key PWB
3
.
3. Separation of stand base section from stand arm section
disassembly
1.
Remove four screws
1
, and separate the stand base section
2
from the stand arm section
3
.
1
1
1
2
3
1
2
7
8
11
8
9
3
5
5
10
6
6
5
4
2
1
1
2
3
4
1
1
2
3
PC-UM10M
LL-H1513-E DISASSEMBLY AND ASSEMBLY
3 – 3
3-1. Stand arm section disassembly
1. Remove the cable cover
1
.
2. Remove four screws
2
, and remove the base arm cover B
3
.
3. Remove the base arm cover F
4
.
4. Remove three screws
5
and three washers
6
, and remove the
base arm install angle
7
.
5. Remove two screws
8
and the slide guide
9
, and remove the
hinge section
F
.
6. Remove the upper cover
G
.
7. Remove the screw
H
and frat spring
I
from the base angle
J
.
3-2. Hinge section disassembly
1.
Remove two screws
1
, and side arm unit
2
.
2.
Remove the tension holder
3
, knob spring
4
and tension knob
5
from the side arm B
6
.
3.
Remove the screw
7
, and remove the side arm F
8
.
4.
Remove three screws
9
from the side arm angle
F
.
5.
Remove the screw
G
, and remove the hinge cover B
H
.
6.
Remove the screw
I
, and remove the hinge cover A
J
from
the hinge unit
K
.
3-3. Stand base section disassembly
1.
Remove five rubber seat
1
.
2.
Remove seven screws
2
, and remove the stand
base plate A
3
.
3.
Remove the stand base
plate B
4
from the stand
cover
5
.
1
3
6
7
4
10
11
14
12
13
5
5
9
5
2
6
8
2
1
2
3
7
8
9
10
11
13
14
12
9
9
4
6
5
15
2
2
3
4
5
2
1
2
1
1
1
PC-UM10M
LL-H1513-E TROUBLE SHOOTING
4 – 1
CHAPTER 4. TROUBLE SHOOTING
First of all, check to confirm that all the accessory cables below are
properly connected.
properly connected.
Also check to confirm that the PC's video mode is set to match the sig-
nal timing supported by this machine.
*
Accessory cables
• Exclusive-use AC cable
• Exclusive-use analog signal cable (RGB cable)
• Exclusive-use digital signal cable (DVI-D cable)
The display does not work (with analog signal input, RGB cable)
(Yes)
(Yes)
(Yes)
(Yes)
(Yes)
(Yes)
When the power button is pressed, does the
LED turn green ?
LED turn green ?
Is the input signal port connected to the analog
signal cable ?
signal cable ?
Is the level of IC13-85P changed by turning
ON/OFF the power button ?
ON/OFF the power button ?
Press the INPUT key to select the suitable
input signal port.
input signal port.
(Yes)
(Yes)
(No)
(No)
(Yes)
(No)
(No)
(No)
(Yes)
(Yes)
(No)
(No)
(No)
(No)
(No)
(Yes)
(No)
(Yes)
(No)
(Yes)
(No)
(No)
Perform 1
Is the display normal in each video mode ?
Does B/L light up ?
No abnormality
Check the AC cable connection.
Check the power unit switch.
Check IP3 and IC24 peripheral circuit.
Check IP2 and IC25 peripheral circuits.
Check IC10 and IC20 peripheral circuits.
Check X1 and peripheral circuits.
Check IC23 and peripheral circuits.
Check IC30 peripheral circuits.
Check XPON signal and CN7 peripheral
circuits.
circuits.
Check EDSDA signal, EDSCL signal, IC13
and IC21 peripheral circuits.
and IC21 peripheral circuits.
Check the analog signal cable and CN2
peripheral circuits and IC5 peripheral circuits.
peripheral circuits and IC5 peripheral circuits.
Check the power unit and the power cable.
Is the power unit switch ON ?
Is the AC cable connected to the power unit ?
Is DC+12V supplied to CN16-1P ?
Is IP2 at DC+5V ?
Is FB30 at DC+3.3V ?
Is RESET signal delivered from IC23 ?
Is X1 oscillating ?
Are FB20 and FB29 at DC+2.5V ?
Is IP3 at DC+5V ?
(Yes)
(Yes)
(Yes)
(No)
(No)
(No)
(Yes)
(No)
Check Q6 Q7, and peripheral circuits.
Check IC13 and IC17 peripheral circuits.
Are the addresses and data signal of IC13 and
IC17 correct ?
IC17 correct ?
Check the SW PWB , the SW cable, and their
connection.
connection.
Are signals of R112 and R113 normal ?
Is the signal at IC13 39 40pin normal ?
Are signals of R19 and R71 normal ?
1
Perform 2
Perform 3
PC-UM10M
LL-H1513-E TROUBLE SHOOTING
4 – 2
(No)
(Yes)
(Yes)
(No)
(Yes)
Check the power unit, the power cable, their
connection, the DC+12V power line, and IP1.
connection, the DC+12V power line, and IP1.
Is CN10-6P at DC+1.0V or below when the
brightness is maximum ?
brightness is maximum ?
Is the inverter PWB normal ?
Check the lamp in the LCD module.
Replace the inverter PWB unit.
(No)
(Yes)
(No)
Is FB23 at DC+12V ?
Is CN10-5P at H level (DC+3.3V) ?
Check IC16 peripheral circuits.
Check BLON signal and CN10 peripheral
circuits.
circuits.
(No)
(Yes)
(No)
(Yes)
Check the analog signal cable, CN2
peripheral, and IC peripheral circuits.
peripheral, and IC peripheral circuits.
Is CN9-39P at DC+5V ?
Check IP2 and IC25 peripheral circuits.
(Yes)
(No)
Is the signal between IC13 and CN9,C11 normal ?
Check IC13, CN9, and 11 peripheral circuits.
(No)
Are signals at IC13-17, 24, 40P normal ?
Are signals at R19 and R71 normal ?
Check CN2, IC5, and IC13 peripheral circuits.
2
3
(Yes)
(No)
Are the cables of the LCD unit normal ?
Check the cables and related parts.
(No)
(Yes)
(No)
(Yes)
Is RESET (IC12 6pin) at High ?
Check R53, C23, and D16.
(Yes)
(No)
Are data inputted to IC12 7 and 8 pins ?
Check the path between CN4 and IC12.
(No)
Is an output of 3.3V supplied at C82 ?
Is clock is oscillated (4MHz: X2) ?
Check IC15 and peripheral circuits.
Check the oscillator and peripheral circuits.
(Yes)
(No)
Are data outputted to IC12, 9, 10, 12, 13 pins ?
Check the path between IC12 and CN3.
(Yes)
Replace the LCD unit.
USB does not work.
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