Read Panasonic KX-T7436C / KX-T7436C-B Service Manual online
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KX-T7436C/KX-T7436C-B
C
DIGITAL PROPRIETARY TELEPHONE
FOR DIGITAL SUPER HYBRID SYSTEM
KX-T7436C
KX-T7436C-B
(for Canada)
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious
injury or death.
ORDER NO. KMS9809312C1
F5
F5
■
SPECIFICATIONS
Station Loop Limit:
40 ohms
Cabling Method:
2 pair wire
Jacks:
Main Unit, Handset/Headset, Telephone
Display:
24 digits (max.)
Dimensions:
208 (W)
×
105 (H)
×
264 (D) mm with handset
Weight:
1.08 kg
Design and specifications are subject to change without notice.
White Version
Black Version
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KX-T7436C/KX-T7436C-B
When you note the serial number, write down all of the 11 digits. The serial number may be found on the label affixed to the bottom of the unit.
TABLE OF CONTENTS
Page
FOR SERVICE TECHNICIANS ................................... 2
LOCATION OF CONTROLS ........................................ 3
DISASSEMBLY INSTRUCTIONS ................................ 4
IC DATA ....................................................................... 6
BLOCK DIAGRAM ..................................................... 13
CIRCUIT OPERATIONS ............................................ 14
TROUBLESHOOTING GUIDE ................................... 26
TERMINAL GUIDE OF IC’S TRANSISTORS,
AND DIODES ..... 31
Page
HOW TO REPLACE THE FLAT PACKAGE IC .......... 32
PRINTED CIRCUIT BOARD ................................ 35, 42
WAVEFORM .............................................................. 37
SCHEMATIC DIAGRAM ............................................ 41
CABINET AND ELECTRICAL PARTS LOCATION ... 43
ACCESSORIES AND PACKING MATERIALS .......... 44
REPLACEMENT PARTS LIST ................................... 45
FOR SERVICE TECHNICIANS
1. Note the following items when exchanging the LEDs (Ref. No. D100-130, 201) of Dial P.C. Board.
1) Do not reuse a LED which is removed from the P.C. Board.
2) Use a soldering iron (less than 15 W) for exchanging LED.
3) Do not heat the LED for more than 2 seconds.
4) Do not move the LED after soldering.
2. This unit employs the switch which is influenced by the light for the hook switch. When you open the cabinet to repair
the unit in the bright light, the hook switch might work improperly. Therefore, take care not to shine the hook switch
directly, or use the jig as shown below.
SW 1 (HOOK SWITCH)
P. C. B.
JIG (Part No. PSHG1176Z)
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KX-T7436C/KX-T7436C-B
LOCATION OF CONTROLS
FLASH
AUTO DIAL
STORE
AUTO ANSWER
MUTE
MESSAGE
SP-PHONE
HOLD
REDIAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PROGRAM
TRANSFER
PAUSE
FWD/DND
INTERCOM
CONF
ABC
DEF
JKL
MNO
GHI
TUV
WXYZ
OPER
PQRS
SHIFT
SUPER HYBRID SYSTEM
MIC
KX-T7436
LCD (Liquid Crystal Display)
Function Buttons
(F1 through F10)
(F1 through F10)
Soft Buttons
(S1 through S3)
(S1 through S3)
Flexible
Outside
(CO) Line
Buttons
Outside
(CO) Line
Buttons
INTERCOM
CONF
(Conference)
(Conference)
FWD/DND
(Call Forwarding/Do Not Disturb)
(Call Forwarding/Do Not Disturb)
REDIAL HOLD
SP-PHONE (Speakerphone)
MIC (Microphone)
FLASH
Jog Dial
AUTO DIAL
/STORE
/STORE
SHIFT
PAUSE
MESSAGE
AUTO ANSWER
/MUTE
/MUTE
PROGRAM
TRANSFER
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KX-T7436C/KX-T7436C-B
DISASSEMBLY INSTRUCTIONS
No. 1
HOW TO REMOVE THE LOWER CABINET
Procedure
1
1
No. 2
HOW TO REMOVE THE HOOK BUTTON
Procedure
1
1
→
2
1) Remove the 4 screws A .
2) Remove the lower cabinet.
2) Remove the lower cabinet.
1) Remove the hook button.
LOWER CABINET
A
A
A
A
HOOK BUTTON
HOW TO ATTACH THE SPRING
SPRING
HOOK BUTTON