DOWNLOAD Panasonic KX-NT680RU-B Service Manual ↓ Size: 6.4 MB | Pages: 70 in PDF or view online for FREE

Model
KX-NT680RU-B
Pages
70
Size
6.4 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / IP PROPRIETARY TELEPHONE
File
kx-nt680ru-b.pdf
Date
PREV: Panasonic PT-DZ8700U / PT-DS8500U / PT-DW8300U / PT-DZ110XE / PT-DS100XE / PT-DW90XE (serv.man11) Service Manual

Panasonic KX-NT680RU-B Service Manual ▷ View online

37
KX-NT680 Series
9.8.
Ethernet Does Not work
9.8.1.
L2SW Data error
Note:
Refer to waveform (26),(27) in  Waveform (P.56) .
Check the soldering.
  Resolder or replace parts as needed.
Measure the voltage at Pin.
TP:L2_VDDH,L2_VDDP,L2_VDDR,L2_VDDA
Is it 3.3V?
Measure the voltage at Pin.
TP:L2_VDDL,L2_VDDS,L2_VDD
Is it 1.1V?
Measure 25MOUT signal at Pin B22 of IC2001.
 
Is it 25MHz?
See the communication waveform(26)*.
Confirm the waveform(MDIO/MDCLK)
See the communication waveform(27)*.
Yes
Yes
Related parts: 
Related parts: 
R3027,L2001,L2002,L2003,L2005,
C2003,C2004,C2006,C2008,C2010,
C2011,C2014,C2015,C2018-C2020,
C2022,C2015-C2027,C2029,
C2032-C2034,C2036
L2004,L2006,L2007,C2005,C2007,
C2009,C2012,C2013,C2016,C2017,
C2021,C2023,C2024,C2028,C2030,
C2031,C2035,C2037,C2038
Related parts: IC1001,L1006,R1046,C1039
Related parts: IC1001,IC2001,R1065,R1066,R2017,
                       R2018
Yes
Are Ethernet communication interfaces available?
Related  parts: Switching HUB,Ethernet Cable
See 9.8.2 LAN port. 
See 9.8.3 PC port. 
 
Yes
END
No
No
Confirm the PHY_RST signal.
the L2SW reset signal(PHY_RST) is released
(HI level)?
Yes
Related parts: R1018,C2001,IC1001
No
No
No
No
Yes
38
KX-NT680 Series
9.8.2.
LAN port
Note:
Refer to waveform (28) - (33) in  Waveform (P.56) .
9.8.3.
PC port
Note:
Refer to waveform (28) - (33) in  Waveform (P.56,P.57) .
Check the soldering.
  Resolder or replace parts as needed.
Confirm the waveform Pin 1-8 of JK2002.
See the communication waveform(31),(32),(33)*.
Related parts: IC2001,T2002,C2045
END
No
Yes
Confirm the waveform Pin 1-12 of T2002.
See the communication waveform(28),(29),(30)*.
Related parts: JK2002,L2009-L2012,R2047,
R2048,R2037,R2039,R2042,
R2044,C2055,C2057,C2061,
C2062
No
Yes
Check the soldering.
  Resolder or replace parts as needed.
Confirm the waveform Pin 1-8 of JK2001.
See the communication waveform(31),(32),(33)*.
Related parts: IC2001,T2001,C2044,D2001
END
No
Yes
Confirm the waveform Pin 1-12 of T2001.
See the communication waveform(28),(29),(30)*.
Related parts: JK2001,R2035,R2036,R2038,
R2041,C2056
No
Yes
39
KX-NT680 Series
9.9.
LCD back light and LED Not Light
Note:
Refer to waveform (34) in  Waveform (P.57) .
Check the soldering.
  Resolder or replace parts as needed.
Does RINGER LED light?
Related parts: 
No
Yes
Related parts: 
No
Yes
Key LED light?
LCD Backlight LED light?
See the communication waveform(34)*.
No
END
Related parts: 
IC1001,Q1001,Q1002,LED cable
(Ringer PCB)
R6001,R6002,D6001,D6014
IC1001,R4040,IC3005,R3017,
R3020-R3023,D3004,L3005,
C3067,C3068,C3071-C3073,
LCD Module
IC1001,R6003-R6008,D6002-D6007
Yes
*Please refer to 10.4 Assembly for Lead wire.
40
KX-NT680 Series
10 Disassembly and Assembly Instructions
10.1. Remove Main Board
1. Tilt the Stand in the direction indicated and press 
the 
PUSH mark with both hands to remove the Stand.
2. Remove 8 Screws A.
3. Remove the Lower Cabinet.
4. Remove both Speaker Cords with the soldering iron.
5. Remove 7 Screws A.
6. Remove the Main PCB.
Stand
 Lower Cabinet
PUSH
PUSH
 Lower Cabinet
A
A
A
A
A
A
A
A
Upper Cabinet
A
A
A
A
A
A
A
Upper Cabinet
 Main PCB
Speaker Cords 
soldering
Page of 70
Display

Click on the first or last page to see other KX-NT680RU-B service manuals if exist.

RANDOM: