Panasonic KX-FP148UA Service Manual ▷ View online
1.1.2. ERROR CODE
5
KX-FP148UA
1.2. ABOUT LEAD FREE SOLDER (PbF: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that
contains lead.
contains lead.
We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn),
Silver, (Ag), and Copper, (Cu).
Silver, (Ag), and Copper, (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.
work we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.
Caution
·
PbF solder has a melting point that is 50° ~ 70° F, (30° ~ 40°C) higher than Pb solder. Please use a soldering iron with
temperature control and adjust it to 700° ± 20° F, (370° ± 10°C). In case of using high temperature soldering iron, please
be careful not to heat too long.
temperature control and adjust it to 700° ± 20° F, (370° ± 10°C). In case of using high temperature soldering iron, please
be careful not to heat too long.
·
PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, (600°C).
·
If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possible
and be sure that any remaining is melted prior to applying the Pb solder.
and be sure that any remaining is melted prior to applying the Pb solder.
·
When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See figure, below).
opposite side (See figure, below).
1.2.1. SUGGESTED PBF SOLDER
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper,
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufac-
turer’s specific instructions for the melting points of their products and any precautions for using their product with other
materials.
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
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KX-FP148UA
1.3. HOW TO RECOGNISE THAT Pb FREE SOLDER IS USED
P.C.Boards marked as “PbF” use Pb Free solder. (See the figure below.)
Pb Free is not used the Power Supply Board of this unit.
(Example :Digital board)
R721
R586
R589
R587
C591
AG-M
IC510
5
8
4
1
C587
CN522
R727
R728
C685
L518
31
21
10
1
C526
C528
C534
C588
C590
C695
C565
C564
C574
C549
C583
Q523
BA
T501
T501
J501
R544
J503
R683
CN503
R532
R531
R604 C611
R702
AMON
X501
FTG
R560
R559
C538
R553
XTEST
R551
C622
11
20
IC507
C620
IC506
Q501
17
32
16
RA505
PbF
C665
C682
C688
Q525
X504
R578
C561
R577
R700
A
B
R569
C669
1
17
32
16
1
12
7
1
CN506
C503
DG
+5VD
+5V
A
A
CN520
AG
PG
+3.3VD
3
1
4
5
10
R600
CN505
12
1
1
NMI
C631
CN510
IC516
C612
R591
R590
12
R630
IC508
CN502
R509
C604
D501
5
1
8
1
9
16
R516
1.25A F502
D502
+24V
R514
IC517
R635
R682
+2.5VBA
T
+2.5V
R687
Q522
C693
C517
TEST
C513
X503
R563
C599
EYESYNC
EYECLK
EYEXY
128
39
38
64
C598
XCLK
103
102
L515
E
E
L529
+2V
28
15
1
14
RA509
RA510
R736
R735
CN507
CN504
CN509
PFUP1356Z
R717
R711
R712
R716
R712
R716
R708
C686
R709
C686
R709
R546
R547
C556
C555 C546 C559
65
R565
R567
IC505
RA511
RA506
IC503
D503
8
1
CN508
+3.3VBAT
C699
Q506
R527
C687 R714
R718
R715
R715
1
8
C673 R693 R694
C672
C674
C689
C690
Q524
R691
C679
R697
C678
R697
C678
R695
R692
R690
C676
C671
C677
C683
AUTO-CH
C628
VIDEO
C623
Q505
C609
R701
R703
R703
R529
R526
R526
108
109
Q520
C511
R530
R528
R556
C547
R720
R719 R557 R629
Q507
C696
1
7
E
C529
C548
C545
R710
R710
C527
IC502
C560
RA513
R733
R731
PCB-CH
REF-CH
CN521
1
12
IC512
RA501
RA504
RA503
IC501
RA502
J502
R549
L506
X502
R552
C595
Q503
R603
R626
R634
R545
Q502
E
C619 R620
R501
C505
C505
R502
E
C501
1
4
8
5
F503
0.25A
C610
R706
C543
C543
R698
1
E
E
E
E
E
1
E
ADR14
ADR13
37
72
36
73
1
144
ADR15
DIGITAL BOARD (COMPONENT)
MARKED
Note : The “PbF” marked may be found on different areas of the same P.C.Board,depending on manufacture date.
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KX-FP148UA
1.4. SAFETY PRECAUTIONS
1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer´s recommended components.
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.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.5. INSULATION RESISTANCE TEST
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part
(screw heads, control shafts, bottom frame, etc.).
Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.
4. If the measurement is outside the specified limits, there is a possibility of a shock hazard.
1.6. FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover the plastic part´s boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch the IC or LSI pins with bare fingers.
1.7. BATTERY CAUTION
CAUTION
Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the
manufacturer. Dispose of used batteries according to the manufacturer’s Instructions.
manufacturer. Dispose of used batteries according to the manufacturer’s Instructions.
The lithium battery is a critical component (type No. CR2032). Please observe for the proper polarity and the exact location
when replacing it and soldering the replacement lithium battery in.
when replacing it and soldering the replacement lithium battery in.
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KX-FP148UA
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