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1-2

Please take note of the following two points with regard to troubleshooting: 

1. Know-how of diagnosis upon occurrence of heavy troubles, e.g. ‘Set cannot be turned ON’, ‘Set fails to start’, ‘No display on 

screen’, etc. 

2. Explanation of each trouble, mainly symptom of trouble in operation. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NG

NO

YES

NO

YES

NG

NO

YES

NG

OK

OK

NO

YES

NG

OK

NG

OK

NO

YES

OK

OK

NG

START 

START 

Pay attention to the following points when in pursuit of the cause of a troubleshooting. 
1. Peripheral apparatus connected with the set should all be removed before operation check. 
2. Make sure that cables, boards, etc. are not coming off, and recheck the contact condition.   

Set cannot be supplied with current. 
Power lamp fails to light up. 

AC 

Adaptor/Battery 

Output voltage

Replace AC Adaptor/Battery

Return set-up utility setpoint to the state of ‘delivery from factory’.

Make sure of contact of K/B connector in use.
Replace keyboard or main board. 

Replace DVD drive. 
Replace main board.

Reinstall HDD. 
Replace main board. 

Power lamp 

check

Check contact condition of power input terminal. Replace if
defective. 
Check Power SW. Replace if defective. 

Inverter board

Replace inverter board. 
Check inverter cable continuity. Replace if defective 

Replace LCD back light.

BIOS operation 

check

Replace main board (Check fuse at power source). 

LCD unit 

check

Replace LCD unit.

Result of 

POST

Refer to POST 
error code table.

Replace main board. 

Main board 

check

Replace main board 

HDD access

Check HDD cable connection and continuity. 
Replace if defective. 
Replace HDD & Reinstall. 
Replace main board. 

Set-up utility 

starting 

Replace main board. 

Trouble

symptoms on some 

of DVD or CD

Check if there are any flaws on DVD or CD
media. Since flaws may appear on specific
media, DVD or CD media can be defective. 

START 

END 

Dark display on screen. 
Screen fails to display. 

Failure in starting 

Not displayed properly on screen. 

Some or all keys cannot be input. 

DVD/CD CALL not practicable. 

Starts but operates unstably. 

Heavy trouble e.g., 
‘Set cannot be turned 
ON’, ‘Set fails to start’, 
‘No display on 
screen’, etc. 

Each kind of 
trouble in 
operation. 

*Clean DVD-ROM drive with an applicator. 

LCD back 

light lighting

Main Block Unit
E1

DL3U11471DAA

DL3U11471DCA

PCB, MAIN

RTL

1

E2

DL3U21471DAA

DL3U21471DCA

PCB, AUDIO

RTL

1

E3

DL3U31471DAA

DL3U31471DCA

PCB, I/O

RTL

1

E42

K1YYZZ000058

 --------

CARD BUS SOCKET

1->0

E42

 --------

K1YYZZ000061

SMART CARD SOCKET

0->1

Mechanical Parts
K43

DFHR3B11YA

 --------

SHEET, PCMCIA

1->0

K43

 --------

DFHR3B32ZA

SHEET, SD BLIND SM

0->1

K677

 --------

DFHG1791ZA

CUSHION S, SM

0->1

K678

 --------

DFHG1792ZA

CUSHION H, SM

0->1

Main PCB
IC 42

C1DB00001179

 --------

IC, LSI

1->0

IC 42

 --------

C1DB00001200

IC, PCMCIA CONTROLLER

0->1

R 437, 438

ERJ3GEY0R00V

 --------

RESISTOR,  1/16W, 0Ω

2->0

R 439, 440

 --------

ERJ3GEY0R00V

RESISTOR,  1/16W, 0Ω

0->2

Note:  Important Safety Notice
          Components identified by       mark have special characteristics important for safety.
          When replacing any of these components, use only manufacturer's specified parts.

CF-18NDQZXVM

E34

K1-2

K1-1

K1-7

K1-5

K66

K83

K42

K608

K400

K37

K44

K38

K67

K53

K51

E18

K50

K19

K400

K400

K92

K81

K66

K406

K406

K406

K301

K25

K1-8

K1-10

K1-6

K1-3

K55

K55

K55

K1-4

K1-9

K1-2

K1-11

E32

K1-2

K24

K219

K1

K1-12

K33

K77

K84

K601

K601

K606

F

F

A

K89

K1-15

K708

K709

K1-14

A

A

A

A

A

A

Screw tightening torque

0.2 _ 0.02N  m
  (2.0 _ 0.2kgf  cm)
0.8 _ 0.02N  m
  (8.0 _ 0.2kgf  cm)

A

F

+

+

+

+

CF-18NDQZXVM

K83-5

K83-5

K83-5

K83-5

K83-2-5

K83-3-5

K83-3-2

K83-3-2

K83-3-1

K83-3-6

K83-3-1

K83-3-3

K83-3-7

K83-3-9

K83-3-9

K3

K36

K4

K52

K64

K34

K602

BT1

K83-3-3

K83-3

K83-3-4

K83-2

K83-2-1

K83-2-6

K83-2-2

K83-2-1

K83-2-7

K83-2-4

K83-2-3

K83-2-9

K83-2-3

K83-2-9

K83-2-10

K83-2-8

K83-2-2

K47

K45

K405

K78

K86

K2

K83-6

K40

 K49

K410

K410

K84

K405

K39

K84

E5

K83-1

E6

E24

E20

E19

K43

K83-4

K83

K83-5

K83-4-5

K83-4-2

K83-4-2

K83-4-1

K83-4-1

K83-4-6

K83-4-7

K83-4-3

K83-4-9

K83-4-9

K83-4-3

K83-4-4

K83-4-8

K83-5

K686

K83-3-8

K71

K501

K503

K83-7

K48

B

A

A

B

A

A

B

B

B

C

A

A

E

E

B

B

B

B

B

B

B

B

A

B

Screw tightening torque

0.2 _ 0.02N  m
  (2.0 _ 0.2kgf  cm)
0.3 _ 0.03N  m
  (3.0 _ 0.3kgf  cm)
0.4 _ 0.05N  m
  (4.0 _ 0.5kgf  cm)
1.50 _ 0.15N  m
  (15.0 _ 1.5kgf  cm)

A

B

C

E

+

+

+

+

+

+

+

+