DOWNLOAD Panasonic KX-TDA6381X / KX-TDA6381SX Service Manual ↓ Size: 7.74 MB | Pages: 76 in PDF or view online for FREE

Model
KX-TDA6381X KX-TDA6381SX
Pages
76
Size
7.74 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 16-PORT ANALOGUE TRUNK CARD W/O CID
File
kx-tda6381x-kx-tda6381sx.pdf
Date
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Panasonic KX-TDA6381X / KX-TDA6381SX Service Manual ▷ View online

25
KX-TDA6381X/KX-TDA6381SX
Installing Optional Service Cards
1. Insert the card along the guide rails.
2. Holding the card as shown below, push the release lever in the direction of the arrow so that the card engages securely with
the connector on the back board.
3. Turn the 2 screws clockwise to fix the card in place.
26
KX-TDA6381X/KX-TDA6381SX
6 Troubleshooting Guide
6.1.
In Case of  the Main Board is Defective
Check the 
voltage of Q15.
Short
OPEN
NG
OK
Replace IP1.
OK
OK
NG
NG
Check the test 
land between [+5V] 
and [GND].
Replace the defective parts.
Check
Q802,IC802,
D802,L802.
OK
Resolder the defective parts.
Check the 
soldering of  IC6,
IC7.
Replace the defective parts.
Check Q801,IC801,
D801,L801.
Check the test 
land between [+3.3V] 
and [GND].
Resolder the defective parts.
Check the 
soldering of  IC3,
IC401,IC402,IC403.
NG
NG
NG
OK
NG
OK
The card doesn't work.
Check for short of the power supply.
(The power supply should be OFF.)
Check for short 
circuit of IP1.
OK
Replace the defective parts.
Check  Q5,Q6.
Resolder the defective parts.
Check
Q802,IC802,
D802, L802.
NG
OK
NG
OK
END
27
KX-TDA6381X/KX-TDA6381SX
In case of  the Main Board is Defective (Continue)
Yes
NO
NO
OK
Yes
Yes
NO
NO
NO
NO
Replace IC402 (programmed).
Download the operating program 
to the IC402 (Flash).
· Check soldering of terminal of 
  IC3 ,IC401 and the peripheral 
  parts.
· TP:12.288MHz
· TP:16.384MHz 
Yes
Yes
Yes
(EMPR initialization)
(LPR initialization)
NO
NO
NO
NO
NO
Yes
Yes
The card does not start up
(The power supply is ON) .
Does the Card 
Status LED light up
 red?
Does the 
Card Status LED
light green?
Is the Card 
Status LED flashing 
green?
Check the power supply. 
Check · Q3 Collector voltage (3.3V -> Lights up, 0V -> Goes OFF) 
· IC13 Pin 28 and 163 voltage (3.3V -> Goes OFF, 0V -> Lights up)
· LED1
· Check soldering of terminal of 
  IC402 and the peripheral parts.
· Replace IC402(programmed).
The peripheral parts of IC is 
broken. (CPU, ASIC)
The peripheral parts of IC is 
broken. (CPU, SRAM)
The peripheral parts of IC is 
broken. (ASIC)
· Check soldering of terminal of 
  IC402 and the peripheral parts.
· Check soldering of terminal of IC3,
  IC610 and the peripheral parts.
· Check soldering of terminal of IC401,
  IC403 and the peripheral parts.
· Check soldering of terminal of 
  IC402 and the peripheral parts.
· Check soldering of terminal of IC3
  and the peripheral parts.
Check · U1 Collector voltage (3.3V -> Lights up, 0V -> Goes OFF) 
· IC3 Pin164 voltage (3.3V -> Goes OFF, 0V -> Lights up)
Check the error log with the PC programming software 
documentation (details of the message)
[LPR start up error 
(ROM defective) ] ?
The peripheral parts of IC is 
broken. (CPU, ASIC)
Is X401 (Crystal) oscillating?
Is X1 (Crystal) oscillating?
· The peripheral parts of IC402 
   is broken.
· The Boot program is broken.
· The peripheral parts of IC402 
  is broken.
· The Boot program is broken.
The peripheral parts of IC402 
(Flash) is broken.
[LPR start up error 
(Checksum bad) ] ?
[LPR start up error 
(RAM defective) ] ?
[LPR start up error 
(No program) ] ?
[LPR start up error 
(No response) ] ?
· LED1
The Flash operating program 
is broken.
The Flash operating program is 
broken.
END
28
KX-TDA6381X/KX-TDA6381SX
In case of  the Main Board is Defective (Continue)
NG
NO
OK
OK
Cannot detect a incoming call.
Check R5A-H, C3A-H.
Replace the 
damaged parts.
Check the photo couplers.
The four pins of PC2A-H and
PC1A-H should repeat
L → H → L → H
while the bell is ringing.
Replace the photo
couplers and the 
peripheral R or C.
Replace the relevant 
CODEC IC6 and IC7.
END
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