KX-UDT111RU (serv.man3) - Panasonic PBX Service Manual (repair manual)

Model
KX-UDT111RU (serv.man3)
Pages
64
Size
1.95 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / DECT PORTABLE STATION
File
kx-udt111ru-sm3.pdf
Date

View Panasonic KX-UDT111RU (serv.man3) Service Manual online

ORDER NO. KMS1304934CE
DECT Portable Station
Model No.
KX-UDT111RU
(for Russia, Ukraine, Kazakhstan)
2
KX-UDT111RU
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians  ---------------------------------3
2 Warning --------------------------------------------------------------4
2.1. About Lead Free Solder (PbF: Pb free) --------------4
2.1.1. Suggested PbF Solder -------------------------------4
2.2. Discarding of P. C. Board --------------------------------4
3 Specifications ------------------------------------------------------5
4 Technical Descriptions------------------------------------------6
4.1. Block Diagram ----------------------------------------------6
4.2. Circuit Operations ------------------------------------------7
4.2.1. Outline----------------------------------------------------7
4.2.2. Power Supply Circuit / Reset Circuit--------------7
4.2.3. Reset Circuit --------------------------------------------7
4.2.4. Clock Circuit --------------------------------------------8
4.2.5. Bus Access ---------------------------------------------8
4.2.6. Charge circuit  (Include Charger)------------------9
4.2.7. Battery Low/Power Down Detector ---------------9
4.2.8. LCD Circuit-------------------------------------------- 10
4.2.9. LED Circuit -------------------------------------------- 11
4.2.10. Vib Circuit---------------------------------------------- 11
4.2.11. RF Circuit---------------------------------------------- 12
4.2.12. TX Audio Path---------------------------------------- 13
4.2.13. RX Audio Path --------------------------------------- 14
5 Location of Controls and Components------------------ 15
5.1. Name of Controls----------------------------------------- 15
6 Installation Instructions--------------------------------------- 17
6.1. Charger Connection ------------------------------------- 17
6.2. Battery ------------------------------------------------------ 17
6.2.1. Battery Installation ---------------------------------- 17
6.2.2. Charging the Batteries ----------------------------- 17
6.2.3. Battery Information---------------------------------- 18
6.2.4. Low Battery Warning ------------------------------- 18
6.2.5. Replacing the Battery ------------------------------ 18
7 Operating Instructions ---------------------------------------- 19
7.1. Soft Keys --------------------------------------------------- 19
7.2. Handset Setting Menu Layout ------------------------ 21
7.3. Key Lock---------------------------------------------------- 22
7.4. Selecting the Display Language---------------------- 22
7.5. Display ------------------------------------------------------ 22
7.6. Function Menus------------------------------------------- 23
7.7. Function Keys --------------------------------------------- 24
7.8. Flexible Keys ---------------------------------------------- 24
7.9. Caller ID ---------------------------------------------------- 25
7.10. Character Mode Table ---------------------------------- 26
8 Firmware Version up ------------------------------------------- 27
9 Troubleshooting Guide---------------------------------------- 28
9.1. Power ON NG--------------------------------------------- 28
9.2. No Display ------------------------------------------------- 29
9.3. Charge problem ------------------------------------------ 30
9.4. LED problem ---------------------------------------------- 30
9.5. Vibrator Trouble------------------------------------------- 31
9.6. RF Trouble ------------------------------------------------- 32
9.6.1. No Link problem (DECT) -------------------------- 32
9.7. STM (Start Monitor)-------------------------------------- 33
9.8. Error Message -------------------------------------------- 34
9.8.1. Need Repair ------------------------------------------ 34
9.8.2. “ERROR 1”, “ERROR 2”--------------------------- 34
10 Disassembly and Assembly Instructions -------------- 35
10.1. Handset ---------------------------------------------------- 35
10.2. Charger Unit ---------------------------------------------- 35
11 Measurements and Adjustments -------------------------- 36
11.1. Check Procedure (Handset) -------------------------- 36
11.1.1. Preparation ------------------------------------------- 36
11.1.2. PC Setting -------------------------------------------- 36
11.2. Adjustment (Handset) ---------------------------------- 38
11.2.1. Equipment Required ------------------------------- 38
11.2.2. The Setting Method of JIG------------------------ 38
11.2.3. Connections (Handset) ---------------------------- 38
12 Miscellaneous --------------------------------------------------- 41
12.1. Terminal Guide of the ICs Transistors and
Diodes ------------------------------------------------------ 41
12.1.1. Handset ----------------------------------------------- 41
12.2. How To Replace a Flat Package IC----------------- 42
12.2.1. Preparation ------------------------------------------- 42
12.2.2. Removal Procedure -------------------------------- 42
12.2.3. Procedure--------------------------------------------- 42
12.2.4. Removing Solder From Between Pins--------- 42
12.3. How to Replace the LLP (Leadless Leadframe
Package) IC----------------------------------------------- 43
12.3.1. Preparation ------------------------------------------- 43
12.3.2. Caution ------------------------------------------------ 43
12.3.3. How to Remove the IC ---------------------------- 43
12.3.4. How to Install the IC-------------------------------- 43
12.3.5. How to Remove a Solder Bridge---------------- 44
12.4. Memo ------------------------------------------------------- 45
13 Schematic Diagram -------------------------------------------- 46
13.1. Handset ---------------------------------------------------- 46
13.2. Charger----------------------------------------------------- 50
14 Printed Circuit Board------------------------------------------ 51
14.1. Handset ---------------------------------------------------- 51
14.1.1. Component View------------------------------------ 51
14.1.2. Bottom View------------------------------------------ 52
14.2. Charger----------------------------------------------------- 52
15 Appendix Information of Schematic Diagram -------- 53
16 Exploded View and Replacement Parts List----------- 54
16.1. IC Data ----------------------------------------------------- 54
16.1.1. IC1(APU)---------------------------------------------- 54
16.1.2. IC100 (DPU) ----------------------------------------- 56
16.2. Cabinet and Electric Parts----------------------------- 59
16.2.1. Handset ----------------------------------------------- 59
16.2.2. Charger Unit------------------------------------------ 60
16.3. Accessories and Packing Materials----------------- 61
16.4. Replacement Parts List -------------------------------- 62
16.4.1. Handset ----------------------------------------------- 62
16.4.2. Charger Unit------------------------------------------ 64
16.4.3. Accessories and Packing Materials ------------ 64
16.4.4. Fixtures and Tools ---------------------------------- 64
3
KX-UDT111RU
1 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.
1.1.
For Service Technicians 
• Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires,
injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
4
KX-UDT111RU
2 Warning
2.1.
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.
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).
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.
Caution
• PbF solder has a melting point that is 50 
°F ~ 70 °F (30 °C ~ 40 °C) higher than Pb solder. Please use a soldering iron with
temperature control and adjust it to 700 
°F ± 20 °F (370 °C ± 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.
• 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 the figure below).
2.1.1.
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 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.
2.2.
Discarding of P. C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
5
KX-UDT111RU
3 Specifications
RF Specifications 
6
KX-UDT111RU
4 Technical Descriptions
4.1.
Block Diagram
RF
BAT +
VB
AT
BAT -
CH
G -
CH
+
Po
we
Sup
ply 
for 
Backlig
ht
Key
 (26)
(Triangle Matrix)
LCD_Backlight
Key_Backlight
Vib_Motor
M
MI
C
RE
CE
IVE
R
HE
ADS
E
T
JA
C
K
SP
EA
KER
3
13
.824
MH
4
BBIC
(APU
)
AN
T
A
P
U-DPU
 I/F
KB
IO
1
8
MI
P
MI
N
HSSPO
UT
P
LO
U
T
HSMIP
HEAD
SET
_DET
SPO
UT
P
SPOU
T
N
V
ib
_
CTRL
CP_
O
FF
L
CD_B
L
1
LCD_
BL
2
DOUBO
U
T
C
H
G_
CTRL
CHG_
D
ET
BAT
CHG_
CUR
Serial F
las
h Memo
ry
16MB
it
Nu
mo
ny
x
1.8
” TFT  C
olor L
CD
128
x1
60do
(Tru
ly /Dr-
IC:HX835
3)
RF
Ci
rc
ui
t
SR
AM
4MB
it
C
ypr
es
s
BB
IC
(D
PU)
SP
I
add
re
s
s
/d
ata
 bus
SP
I
RF I/F
Uart
U
a
rt I/F
J
T
AG
 I/
F
Ni-MH
JT
AG
C
harge 
Circuit
BELL_LED(Green)
BE
LL
_
G
R
EEN
BELL_LED
( Red)
BE
LL
_
R
ED
7
KX-UDT111RU
4.2.
Circuit Operations
4.2.1.
Outline
Handset consists of the following ICs as shown in Block Diagram (Handset). 
• BBIC (Base Band IC): IC100
- All data signals (forming/analyzing ACK or CMD signal)
- All interfaces (ex: Key, Detector Circuit, Charge, LCD, LED, SRAM, Flash ROM)
• SRAM: IC101
- Application data and code are temporarily stored.
• Flash ROM (substitute EEPROM): IC102
- Adjustment data, program data and temporary user data are stored.
• RF IC: IC1
- PLL Oscillator
- Detector
- Compress/Expander
- Amplifier for reception
- Amplifier for transmission
4.2.2.
Power Supply Circuit / Reset Circuit
The power supply of each IC is as follows.
The Power On Reset is designed to guarantee power-on of the system only when 1.8v and 3.0v voltages exist.
4.2.3.
Reset Circuit
The reset signal is generated with IC1(44Pin).
8
KX-UDT111RU
4.2.4.
Clock Circuit
4.2.5.
Bus Access
The SRAM is used with an async mode.
9
KX-UDT111RU
4.2.6.
Charge circuit  (Include Charger)
Circuit Operation:
When charging with Charger, the charge current is as follows:
DC+(5.5V) 
→ CHARGE+(Charger) → CHARGE+(Handset) → L200 → D200 → Q204 → F201 → BATTERY+... BATTERY- →
R201 
→ GND
In this way, the BBIC(IC1) on Handset detects the fact that the battery is charged.
The charge current is controlled by IC1 23pin of Handset.
Refer to in  Power Supply Circuit / Reset Circuit (P.7) .
After CHG_DET became High, CHG_CTRL begins charge control.
Charge current is controlled as follows.
Charge current repeats ON and OFF as follows.
4.2.7.
Battery Low/Power Down Detector
"Battery Low" and "Power Down" are detected by APUZ (IC1) which checks the battery voltage.
The detected voltage is as follows;
• Battery Low
Battery voltage: V(Batt)   2.35V ± 50mV
• Power Down 
After battery low, it goes to power down automatically 1 minute later.
IC1-23pin (CHG_CTRL)
Q201
Q200
Q204
Charge ON
High
ON
ON
ON
Charge OFF
Low
OFF
OFF
OFF
Charger
CHG_CUR
CHG_CTRL
CHG_DET
R201
C213
GND
GND
GND
GND
GND
GND
L200
L201
GND
C211
NC
C214
CHG_CTRL
C201
GND
GND
GND
GND
C202
C206
IC200
NC
4
VSS
3
NC
1 OUT
2 VDD
CHG_DET
F201
GND
Q205
Q200
R205
R206
R208
R210
R211
R207
C207
C209
R219
C203
C204
C221
C222
GND
GND
CHG(+)
CHG(-)
BATT+
BATT-
Q204
D200
C216
GND
GND
GND
R214
CHG+
CHG-
Q201
Q203
R215
C205
R209
R213
C212
To Charge 
   Terminal
To Battery
IC1
J1
(DC Jack)
CHG+
CHG-
Charger
Handset
Charge Current
23
24
10
KX-UDT111RU
4.2.8.
LCD Circuit
• The LCD is controlled by SPI (LCD_SCL, LCD_RESET, LCD_CS, LCD_SID, LCD_CD).
• LCD back-light has 3 modes ( Brightness 1/2/3*) and back-light OFF.
*Brightness level: Brightness 1 > Brightness 2 > Brightness 3
Back-light Mode
IC100-17pin (CP_ON)
IC100-15pin (LCD_BL1)
IC100-16pin (LCD_BL2)
Brightness 1
High
High
High
Brightness 2
High
High
Low
Brightness 3
High
Low
Low
Back-light OFF
Low
Low
Low

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Here you can view online and download Panasonic KX-UDT111RU (serv.man3) Service Manual in PDF. KX-UDT111RU (serv.man3) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic KX-UDT111RU (serv.man3) PBX. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.