Panasonic Cf 31 Service Manual

							ORDER NO. CPD1108207AE
Notebook Computer
CF-31KQH41DMModel No.
This is the Service Manual for
the following areas.
M …for U.S.A. and Canada
© Panasonic Corporation 2011.
Unauthorized copying and distribution is a violation of law. 
						

							This apparatus must be earthed for your safety.
To ensure safe operation the three-pin plug must be inserted only into a \
standard three-pin power point
which is effectively earthed through the normal household wiring.
Extension cords used with the equipment must be three-core and be correc\
tly wired to provide connec-
tion to earth. Wrongly wired extension cords are a major cause of fatalities.
The fact that the equipment operates satisfactorily does not imply that \
the  power point is earthed and
that the installation is completely safe.
For your safety, if you have any doubt about the effective earthing of the power point, consult a quali-
fied electrician.
FOR YOUR SAFETY PLEASE READ THE FOLLOWING TEXT CAREFULLY
This appliance is supplied with a moulded three pin mains plug for your \
safety and convenience.
A 3 amp fuse is fitted in this plug.
Should the fuse need to be replaced please ensure that the replacement f\
use has a rating of 3 amps and
that it is approved by ASTA or BSI to BS 1362.
Check for the ASTA mark  or the BSI mark  on the body of the fuse.
If the plug contains a removable fuse cover you must ensure that it is r\
efitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used until a replacement\
 cover is obtained.
A replacement fuse cover can be purchased from your local Panasonic Deal\
er.
IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR THE SOCKET OUTLET IN YOUR
HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED
OF SAFELY.
THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF PLUG IS INSE\
RTED
INTO ANY 13 AMP SOCKET.
If a new plug is to be fitted please observe the wiring code as shown be\
low.
If in any doubt please consult a qualified electrician.
Warning: THIS APPLIANCE MUST BE EARTHED.
Important
The wires in this mains lead are coloured in accordance with the followi\
ng code:
Green-and-yellow:Earth
Blue:Neutral
Brown:Live
As the colours of the wires in the mains lead of this apparatus may not \
correspond with the coloured
markings identifying the terminals in your plug, proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be connected to the ter\
minal in the plug
which is marked by the letter E or by the safety earth symbol  coloured GREEN or GREEN-and-
YELLOW.
The wire which is coloured Blue must be connected to the terminal which \
is marked with the letter N or
coloured BLACK.
The wire which is coloured Brown must be connected to the terminal which\
 is marked with the letter L
or coloured RED.
The mains plug on this equipment must be used to disconnect the mains po\
wer.
Please ensure that a socket outlet is available near the equipment and s\
hall be easily accessible.
How to replace the fuse
Open the fuse compartment with a screw-
driver and replace the fuse.
WarningsThis equipment is not designed for connection to an IT power system.(An IT system is a system having no direct connections between live par\
ts and Earth; the exposed-conducive-parts of the electrical installation are earthed.An IT system is not permitted where the computer is directly connected t\
o public supply systems in the U.K.)
Disconnect the mains plug from the supply socket when  the computer is n\
ot in use.
This equipment is produced to BS800/1983.
For U.K.
WARNING
00320020 002F002000310034  
						

							LASER SAFETY INFORMATION 
Class 1 LASER Product 
PRODUCT COMPLIES WITH DHHD RULES 21 CFR CHAPTER 1,SUBCHAPTER J. 
130KS
This equipment is classified as a class 1 level LASER product and there is no hazardous 
LASER radiation. 
Caution 
(1) Use of controls or adjustments or performance of procedures other than those specified 
herein may result in hazardous exposure. 
(2) The drive is designed to be incorporated into computer-based system or unit which has 
an enclosing cover. It should never be used as a stand alone drive.  
Danger 
The serviceman should not remove the cover of drive unit and should not serve, because 
the drive unit is a non-serviceable part.. 
- Unplug the AC power cord to the equipment before opening the cover of the drive. 
- When the power switch is on, do not place your eyes close to the front panel cover to look 
into the interior of the unit. 
LASER Specification 
Class 1 Level LASER Product 
Wave Length:   DVD: 656 – 665 nm,   CD: 777 – 790nm 
00330020 002F002000310034  
						

							Vorsicht!
Explosionsgefahr bei unsachgemäßem Austausch der Batterie.  Ersatz nur durch denselben order einen vom
Hersteller empfohlenen ähnlichen Typ.  Entsorgung gebrauchter Batterien nach Angaben des Herstellers.
 LITHIUMBATTERIES
ATTENTION: IL Y A DANGER DEXPLOSION S IL Y A REMPLACEMENT INCORRECT DE LA 
BATTERIE. REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MÈME TYPE OU DUN TYPE 
RECOMMANDÉ PAR LECONSTRUCTEUR.  METTRE AU RÉBUT  LES BATTERIES USAGÉES 
CONFORMÉMENT AUX INSTRUCTIONS DUFABRICANT.
 PILE AU LITHIUM
 LITHIUM BATTERY
SAFETY PRECAUTIONS
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Discardused batteries according to the manufacturers instructions.
1.  Before servicing, unplug the power cord to prevent an electric shock\
.
2.  When replacing parts, use only manufactures recommended components
     for safety.
3.  Check the condition of the power cord. Replace if wear or damage is \
evident.
4.  After servicing, be sure to restore the lead dress, insulation barriers,\
 
     insulation papers, shields, etc.
LITHIUM BATTERY
This computer contains a lithium battery to enable the date, time, and o\
ther
data to be stored. The battery should only be exchanged by authorized
service personel.
    Warning!  A risk of explosion from incorrect installation or misapplication may
possibly occur.
When using your telephone equipment, basic safety precautions should alwa\
ys be followed to reduce the risk 
of fire, electric shock and injury to persons, including the following: \
1. Do not use this product near water, for example, near a bath tub, wash bowl, kitchen sink or laundry tub, \
in a 
wet basement or near a swimming pool. 
Avoid using a telephone (other than a cordless type) during an electric\
al storm.2.
There may be a remote risk of electric shock from lightning. 
3. Do not use the telephone to report a gas leak in the vicinity of the lea\
k. 
vicinity of the leak.
4. Use only the power cord and batteries indicated in this manual. Do not d\
ispose of batteries in a fire. 
They may explode. Check with local codes for possible special disposal instructions. 
SAVE THESE INSTRUCTIONS
Important Safety Instructions 
00340020 002F002000310034  
						

							Precautions (Battery Pack)
A lithium ion battery that is recyclable powers the product you have purc\
hased.
Please call 1-800-8-BATTERY for information on how to recycle this battery.
L’appareil que vous vous êtes procuré est alimenté par une ba\
tterie au lithium-ion.
Pour des renseignements sur le recyclage de la batterie, veuillez compos\
er le 
1-800-8-BATTERY.
Do Not Use With Any Other ProductThe battery pack is rechargeable and was intended for the  product. If it is used with a product other than the one for which it was designed, electrolyte leakage, generation of heat, ignition or rupture may result.
Do Not Charge the Battery Using Methods Other Than 
If the battery is not charged using one of the  methods, electrolyte leakage, generation of heat, ignition or rupture may result.
Do Not Throw the Battery Pack Into a Fire or Expose It to Excessive HeatGeneration of heat, ignition or rupture may result.
Avoid Extreme Heat (Near the Fire, In Direct Sunlight, for Example)Electrolyte leakage, generation of heat, ignition or rupture may result.
Do Not Insert Sharp Objects Into the Battery Pack, Expose It to Bumps or Shocks, Disassemble, or Modify ItElectrolyte leakage, generation of heat, ignition or rupture may result.Ÿ If this product is subjected to a strong impact, stop using it im-mediately.
Do Not Short the Positive (+) and Negative (-) ContactsGeneration of heat, ignition or rupture may result. Ÿ Do not place the battery pack together with articles such as necklaces or hairpins when carrying or storing.
Do Not Use This Product with a Battery Pack Other Than 
Use only the  battery pack (CF-VZSU46AU) with your product. Use of battery packs other than those manufactured and supplied by Panasonic may present a safety hazard (gen-eration of heat, ignition or rupture).
When the battery pack has become degraded, replace it with a new oneContinued use of a damaged battery pack may result in heat generation, ignition or battery rupture.l Do not touch the terminals on the battery pack. The battery pack may no longer function properly if the contacts are dirty or damaged.l Do not expose the battery pack to water, or allow it to become wet.l If the battery pack will not be used for a long period of time (a month or more), charge or discharge (use) the battery pack until the remain-ing battery level becomes 30% to 40% and store it in a cool, dry place.l This computer prevents overcharging of the battery by recharging only when the remaining power is less than approx. 95% of capacity.l The battery pack is not charged when the computer is  purchased. Be sure to charge it before using it for the  time. When the AC adaptor is connected to the computer, charging begins automatically.l Should the battery leak and the  get into your eyes, do not rub your eyes.  Immediately  your eyes with clear water and see a doctor for medical treatment as soon as possible.
CAUTION:Risk of Explosion if Battery is replaced by an Incorrect Type. Dispose of Used Batteries According to the Instructions.
ATTENTION:Il y a risque d’explosion si la batterie est remplacée par une batterie de type incorrect.Mettre au rebut les batteries usagées conformément aux instructions.
 NOTE 
l The battery pack may become warm during recharging or 
normal use.  This is completely normal.
l Recharging will not commence if internal temperature of the 
battery pack is outside of the allowable temperature range (0 
°C to 50 °C {32°F to 122 °F}).  
(è  Reference Manual “Battery Power”) Once the allow-able range requirement is  charging begins auto-
matically.  Note that the recharging time varies based on the 
usage conditions. (Recharging takes longer than usual when 
the temperature is  
10 °C {50 °F} or below.)
l If the temperature is low, the operating time is shortened.  
Only use the computer within the allowable temperature 
range.
l This computer has a high temperature mode function that 
prevents the degradation of the battery in high temperature 
environments. (è  Reference Manual “Battery Power”) A  level corresponding to a 100% charge for high temperature 
mode is approximately equivalent to an 80% charge level for 
normal temperature mode.
l The battery pack is a consumable item.  If the amount of 
time the computer can be run by using a particular battery 
pack becomes dramatically shorter and repeated recharging 
does not restore its performance, the battery pack should be 
replaced with a new one.
l When transporting a spare battery inside a package, brief-
case, etc., it is recommended that it be placed in a plastic 
bag so that its contacts are protected.
l Always power off the computer when it is not in use. Leaving 
the computer on when the AC adaptor is not connected will 
exhaust the remaining battery capacity.
00350020 002F002000310034  
						

							Precautions (AC Adaptor)
Model No: 
POUR UTILISER  AVEC MODELEFOR USE WITH MODEL NO.
Using an AC adaptor other than the one supplied (attached
to your product or supplied by Panasonic) may result in a
fire.   Use Only the Specified AC Adaptor With This Product
CF-AA5713A
CF-AA5713A
CF-AA5713A
00360020 002F002000310034  
						

							CF-31KQH41DM
Exploded View
O
N14N14N14
N14
N14
N14
N20
N14
N14
N15 N15
N15
K32-2
N14
N14
N14N14
N14 N14
N14
N14N14
N14 N15
N14
N14 K102
K108
K102
K23
K25
K55
K117
K104
K21 K51 K98
K53
K67 E50
K115 K115
K32-3
K32-4
K33
K1-5K1-7
K121 K1-6
K1-8
E23 K1
K32-5 K116
K115
K26
K27 K31
N14
K99
E51 N37
K22 K105
K30
K28
K29
K118
K127
K90
N14
N14
N14 N15
K32
K1-1
K1-2
K1-4
K1-9
K1-3
K1-10
K1-11
K904
K115
Top Case Assy(K50)
K32-1
N15
K65
N15
E24
K502K501
K502
K500
K503
I
I
I
D
D
D
D
D
J
I
I
D
D
D
D
D
D
D
D
DD
D
D
D
D
D
D
D
D
D
D
D
D
D
0.45 ± 0.05 N
.m
(4.5 ± 0.5 kgf.cm)D
0.30 ± 0.03 N
.m
(3.0 ± 0.3 kgf.cm)J
0.40 ± 0.05 N
.m
(4.0 ± 0.5 kgf.cm)I
Screw tightening torque
00370020 002F002000310034  
						

							CF-31KQH41DM
Y
X
Z
W
V
T
TU
W
K50-53K50-55
K50-13
K50-13 K50-13
K50-13
K50-23
K50-22
K50-24
K50-28
K50-28
K50-20
K50-24
N31 K50-25
K50-19
K50-14
K50-14
K50-13
K50-57
K50-19
K50
K50-26
K50-14
K50-8 K50-14
K50-13
K50-14
N31
N31
N31 N31
N31
K50-54
K50-13
K50-10
K50-19
K50-27
K50-11
K50-13
K50-56
K50-5
K50-13
K50-26
K50-30
K50-12
K50-7
K50-6 K50-58 
N32
K50-28
K50-28
K50-12
K50-30
K110
Top Case
K403
E41K407
E29
E28
K412
K402
K401E43
K50-19
K50-17 K50-18
K405
K50-15K50-16
K406
K404
K404
K50-15
K50-16
K50-13
K50-13
K50-43K50-41
K50-35
K50-59
K50-39
E44 K50-38
K50-40
K50-32
K50-33
K50-19
K50-17 K50-18
E42
K50-31
K408
K412
K411
K410
E31
K409 K413
K78
K50-29 K50-21 
K182
K185
E0.49 ± 0.05 N.m
(4.9 ± 0.5 kgf.cm)
0.45 ± 0.05 N
.m
(4.5 ± 0.5 kgf.cm)
0.10 ± 0.01 N
.m
(1.0 ± 0.1 kgf.cm)A
D
D
D
Screw tightening torque
C 0.20 ± 0.02 N.m
(2.0 ± 0.2 kgf.cm)G 1.50 ± 0.15 N.m
(15 ± 1.5 kgf.cm)
H 0.30 ± 0.5 N.m
(3.0 ± 0.5 kgf.cm)
H
DD
D
D
D
E
E
A
C
D
D
D
D
D
DD
D
D
D
D
D
D
D
D
D
D
D
G
G
GD
G
G
D
D
D
C
D
C
D
00380020 002F002000310034  
						

							CF-31KQH41DM
YZ
L
V
P
L
M
X
U
M
RK
K
R
Q
S
Top Case Assy(K50)
K110 K182
K182
K182
K185
K79
K186
K82
K38
K36
K40 N14
N14
N15
N14
N7
N5 N5
N36
N31
N19 
N19 N36
N7
K128
E20
E4
E16 E19
E1
N7
K182
K88
E25
E56
K87
K90 N15
N15
N14
N15
N15
K91
E17
E30 E3
E2
Dummy PCB
K185 K109
K180
K110
K181 K89
K178
E27
E7
K187
K94
K96 K95
K73
K71
K175
K185
K114
K110
K110
N14
N33
N14
N15
N15N15 N15
N39
N39 N39 N39
E52K179 N38
N10
N14N15
N15
E702E703
N21
N21
K176
N19 N19 
K172
K172
K171K173
K173
K174
K186
K68
N34
N34
E8 K187
K44
K45
N7
N7
N7N10
K135 E13
K47
E9
K42
K46
N4
K136
K185
K54 K52
N14
N40
N14
K57
E700
K177
K64
K56K59
K185
E701
K900
K93
E901
K182 K903
K42
E900
K9
E45
Screw tightening torque
DD
I
I
D
D
BB
D
D
II
D
D
D
D
D
DD
D
DD
DD
D
D
D
B
D
D
DD
D
B
D
DB
B
BB
B
DB
B
B
B
B
I
D 0.45 ± 0.05 N.m
(4.5 ± 0.5 kgf.cm)
0.40 ± 0.05 N.m
(4.0 ± 0.5 kgf.cm)
0.19 ± 0.02 N
.m
(2.0 ± 0.2 kgf.cm)
B
B
B
00390020 002F002000310034  
						

							CF-31KQH41DM
Q
P
S
Touch Panel Assy(E26) 
N3
N3
K119
K18 K12
N2
N2
N2 N2 N2
N2
N2 N2
K19 N14K17
K16
N14
E49
N14
N2N2
N14
N14
K20
E48
K11
K6 K8
K6-2
K6-1 K7
K2-3 K2-2
K2-5 K2-5
K2-4
K2-4
K2-6
K2
E10K2-5
K2-5 K2-5
K2-1
K2-5
K2-5
N35
N35
N32
N32
LCD Assy(E32) 
N14 
F
F
D
D
D
D
DD
D
D
G
G
D
D
D
D
D
D
D
D
G
G
G
G
F 1.47 ± 0.2 N .
m
(15 ± 2.0 kgf .
cm)
0.45 ± 0.05 N
.
m
(4.5 ± 0.5 kgf .
cm)
D
Screw tightening torque
G 1.5 ± 0.15 N .
m
(15 ± 1.5 kgf .
cm)
003100300020 002F002000310034