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KX-T7633RU-B
Black Version
(for Russia)
Digital Proprietary Telephone
IMPORTANT INFORMATION ABOUT LEAD FREE, (PbF), SOLDERING
If lead free solder was used in the manufacture of this product the printed circuit boards will be marked PbF.
Standard leaded, (Pb), solder can be used as usual on boards without the PbF mark.
Standard leaded, (Pb), solder can be used as usual on boards without the PbF mark.
When this mark does appear please read and follow the special instructions described in this manual on the use of PbF and how
it might be permissible to use Pb solder during service and repair work.
it might be permissible to use Pb solder during service and repair work.
ORDER NO. KMS0605248CE
1 ABOUT LEAD FREE SOLDER (PbF: Pb free)
3
1.1.
SUGGESTED PbF SOLDER
3
1.2.
HOW TO RECOGNIZE THAT Pb FREE SOLDER IS
USED
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2 FOR SERVICE TECHNICIANS
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3 SPECIFICATIONS
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4 LOCATION OF CONTROLS
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5 CONNECTION
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6 DISASSEMBLY INSTRUCTIONS
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7 HOW TO REPLACE A FLAT PACKAGE IC
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7.1.
PREPARATION
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7.2.
REMOVAL PROCEDURE
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7.3.
PROCEDURE
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7.4.
REMOVING SOLDER FROM BETWEEN PINS
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8 TROUBLESHOOTING GUIDE
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8.1.
NO OPERATION
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8.2.
LCD DOES NOT OPERATE
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8.3.
HANDSET DOES NOT WORK
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8.4.
HEADSET DOES NOT WORK
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8.5.
SPEAKER-PHONE TROUBLE
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8.6.
DXDP-DPT DOES NOT WORK
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8.7.
OPTION DOES NOT WORK
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9 BLOCK DIAGRAM
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10 CIRCUIT OPERATIONS
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10.1. KEY INPUT CONTROL CIRCUIT
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10.2. LCD CIRCUIT
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10.3. LED CIRCUIT
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10.4. RESET CIRCUIT
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10.5. POWER SUPPLY CIRCUIT
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10.6. DATA COMMUNICATION
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10.7. DXDP COMMUNICATION
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10.8. OPTION DETECTION
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10.9. ANALOG CIRCUIT
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11 IC DATA
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11.1. IC5 (ASIC)
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11.2. IC3 (CPU)
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12 TERMINAL GUIDE OF ICs, TRANSISTORS AND DIODES
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13 CABINET AND ELECTRICAL PARTS LOCATION
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14 ACCESSORIES AND PACKING MATERIALS
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15 REPLACEMENT PARTS LIST
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15.1. CABINET AND ELECTRICAL PARTS
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15.2. ACCESSORIES AND PACKING MATERIALS
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15.3. MAIN AND SUB BOARDS PARTS
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16 FOR THE SCHEMATIC DIAGRAM
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17 SCHEMATIC DIAGRAM
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18 WAVEFORM
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18.1. MEMO
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19 PRINTED CIRCUIT BOARD (MAIN / SUB BOARDS)
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19.1. COMPONENT VIEW
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19.2. BOTTOM VIEW
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CONTENTS
Page
Page
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KX-T7633RU-B
1 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 when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn), Silver,
(Ag), and Copper, (Cu).
(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.
work we suggest using the same type of solder.
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).
Exercise care while using higher temperature soldering irons.:
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
•
•
•
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, (600°C).
•
•
•
• 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).
1.1. 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 manufacturer’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 gauges are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi).
Please check the manufacturer’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 gauges are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
3
KX-T7633RU-B
1.2. HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED
PbF is stamped to show that Pb free solder is used. (See the figure below.)
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KX-T7633RU-B
