Panasonic KX-TGE210B User manual

© Panasonic System Networks Co., Ltd. 2015
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41512025SE
Telephone Equipment
Model No.
KX-TGE210B/KX-TGE212B/
KX-TGE232B/KX-TGE233B/
KX-TGE234B/KX-TGE240B/
KX-TGE242B/KX-TGE243B/
KX-TGE244B/KX-TGE245B/
KX-TGE262S/KX-TGE263S/
KX-TG454SK/KX-TGE272S/
KX-TGE273S/KX-TGE274S/
KX-TG484SK/KX-TGEA20B/
KX-TGEA20S
Digital Cordless Phone
Digital Cordless Answering System
Link-to-Cell Bluetooth Convergence
Solution
B: Black Version
S: Silver Version
T: Black Metallic Version
Supplement
Please use this manual with the original service manual mentioned on the page 3.

2
TABLE OF CONTENTS
PAGE
1 ORIGINAL SERVICE MANUAL INFORMATION ----------3
2 REPLACEMENT PARTS LIST ---------------------------------3
2.1. REFERENCE CHART ------------------------------------3
2.2. ORIGINAL AND NEW PARTS COMPARISON
LISTS----------------------------------------------------------4
3 CHANGES (Suffix Code: D or later) -------------------------5
3.1. Technical Descriptions ------------------------------------5
3.1.1. Block Diagram (Handset)----------------------------5
3.1.2. Circuit Operation (Handset)-------------------------6
3.2. Test Mode ----------------------------------------------------7
3.2.1. Handset --------------------------------------------------7
3.3. Troubleshooting Guide------------------------------------8
3.3.1. Check Power -------------------------------------------8
3.3.2. Check Link ----------------------------------------------9
3.3.3. Check the RF part----------------------------------- 10
3.4. Disassembly and Assembly Instructions ----------- 11
3.4.1. Handset ------------------------------------------------ 11
3.5. Measurements and Adjustments --------------------- 12
3.5.1. Adjustment Standard (Handset) ----------------- 12
3.5.2. Things to Do after Replacing X'tal--------------- 13
3.6. Miscellaneous --------------------------------------------- 14
3.6.1. Terminal Guide of the ICs, Transistors and
Diodes-------------------------------------------------- 14
3.7. Schematic Diagram-------------------------------------- 15
3.7.1. Schematic Diagram (Handset_Main)----------- 15
3.7.2. Schematic Diagram (Handset_Module) ------- 16
3.8. Printed Circuit Board ------------------------------------ 17
3.8.1. Circuit Board (Handset_Main)-------------------- 17
3.8.2. Circuit Board (Handset_Module) ---------------- 19
3.9. Replacement Parts List--------------------------------- 20
3.9.1. Handset ------------------------------------------------ 20

3
1 ORIGINAL SERVICE MANUAL INFORMATION
2 REPLACEMENT PARTS LIST
2.1. REFERENCE CHART
Model No. on S/M Destinations Order No. of S/M Suffix Code
Base Unit Handset
KX-TGE210B/KX-TGE212B/KX-TGE232B/KX-TGE233B/KX-
TGE234B/KX-TGEA20B
U.S.A. KM41401789CE --- A to D
KX-TGE240B/KX-TGE242B/KX-TGE243B/KX-TGE244B/KX-
TGE245B/KX-TGE260S/KX-TGE262S/KX-TGE263S/KX-TGE264S/
KX-TG454SK/KX-TGE270S/KX-TGE272S/KX-TGE273S/KX-
TGE274S/KX-TG465SK/KX-TGEA20B/KX-TGEA20S
U.S.A. KM41401783CE ---
TGE240B,
TGE242B,
TGE243B,
TGE244B,
TGE245B:
A to D
TGE262S,
TGE263S:
C to D
TGE272S,
TGE273S,
TGE274S,
TGE275S:
C to D
TGEA20B,
TGEA20S:
A to D
TG454SK:
C to D
KX-TG484SK U.S.A KM41506831SE --- C to D
Reason for Change
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS
COMPARISON LISTS.
1. Improve performance Note:
Change parts based on Suffix Code.
Remarks:
*c: To share the parts with other models
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other

4
2.2. ORIGINAL AND NEW PARTS COMPARISON LISTS
Serial No.Label tells you the suffix code as follows.
*1: Please refer to "1 ORIGINAL SERVICE MANUAL INFORMATION".
Note:
Please refer to "3.7. Schematic Diagram" (P.15), "3.8. Printed Circuit Board" (P.17) and "3.9. Replacement Parts List" (P.20)
for detail.
Suffix A B BSerial No. Label
(Example)
Ref. No. Part No. Part Name & Description Pcs/
Set
Remarks Notes Time of Change
Original (Old) New (Suffix)
Cabinet and Electrical Parts (Handset)
118 PNQT2859Z PNQT3384Z LABEL, BATTERY 1 *c 8 Y *1
Main P.C. Board Parts (Handset)
PCB100 ---------- PNWP1GEA20RY MAIN P.C.BOARD ASS'Y(RTL) 1 *c 8 Y *1
IC3 ---------- PNWITGEA20RY IC(EEPROM) 1 *c 8 Y *1

5
3 CHANGES (Suffix Code: D or later)
3.1. Technical Descriptions
3.1.1. Block Diagram (Handset)
[Changed from original section “4.7. Block Diagram (Handset)”]
QSPI FLASH MEMORY
IC4
Reset
Reset Pin 71
SPEAKER
RECEIVER
MIC
CHARGE CIRCUIT Q2, Q3, Q4, Q9, R8
CHARGE CONTACTS
CHARGE(+)
CHARGE_CTRL
CHARGE_DET
BATTERY TERMINAL R45
VBAT
BATT-
1.8 V
Q1
1.8 V
LCD
CD
RESET
CS SID
SCL
CPU
Analog
Front
End
D/A A/D
35 37
21 22
17 18
34 33
32
24
44 45
73 63 64 77 76
ADPCM
Codec
Filter
DSP
Speech
Decoding
Speech
Encoding
BMC
Burst
Decoding
ANT1
Burst
Encoding
RF
PLL
MOD/DEMOD
1 2
87 86
RXn ANT1 RXp
TXp TXn
7
8
XTAL
X1
10.368 MHz
BATTERY
46
ON SWITCH
KEYPAD
Charge
Pump
ROWS
COLUMNS
CP3V
CP4V
55, 57, 58, 59, 60
11, 12, 13, 14, 62
47, 48, 51, 53 QSPI-IO 0-3
BBIC
IC1
65
LCD-BACK LIGHT
KEY LED 61
79 80 78
NR(Noise Reduction) LED
BELL LED x 2 TGEA20 Only
LDO_CTRL
1.8 V
CP3V
QSPI
Control
52 QSPI-SCK
49 QSPI-CS
LCD_LED0
CP4V CP4V
CP3V
1.8 V
GND
KX-TGEA20 BLOCK DIAGRAM (HANDSET)

6
3.1.2. Circuit Operation (Handset)
[Changed from original section “4.9. Circuit Operation (Handset)”]
3.1.2.1. Outline
Handset consists of the following ICs as shown in Block Diagram (Handset) (P.5).
• DECT BBIC (Base Band IC): IC1
- All data signals (forming/analyzing ACK or CMD signal)
- All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, EEPROM, LCD, RF Power Amp.)
- PLL Oscillator
- Detector
- Compress/Expander
- Reception
- Integrated 1.9 GHz PA for DECT
• QSPI FLASH MEMORY: IC4
- Main Program D/L Area
• EEPROM : IC3
Following information data is stored
-Settings
ex : ID code, user setting
3.1.2.2. Power Supply Circuit/Reset Circuit
Circuit Operation:
When power on the Handset, the voltage is as follows;
BATTERY(2.2 V ~ 2.6 V: BATT+) -> Q1 (1.8 V), IC1-44pin (CP3V)
The Reset signal generates IC1 (71 pin) and 1.8 V.
3.1.2.3. Charge Circuit
Circuit Operation:
When charging the handset on the Base Unit, the charge current is as follows;
DC+(5.5 V) -> R371 -> R372 -> D362 -> CHARGE+(Base) -> CHARGE+(Handset) -> -> Q3 -> BATTERY+... Battery...
BATTERY- -> R45 -> GND -> CHARGE-(Handset) -> CHARGE-(Base) -> GND -> DC-(GND)
In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by switching Q9 of Handset.
Refer to Power Supply Circuit/Reset Circuit (P.6).
3.1.2.4. Battery Low/Power Down Detector
Circuit Operation:
“Battery Low” and “Power Down” are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;
• Battery Low
Battery voltage: V(Batt) 2.25 V ± 50 mV
The BBIC detects this level and " " starts flashing.
• Power Down
Battery voltage: V(Batt) 2.0 V ± 50 mV
The BBIC detects this level and power down.
1.8V
Battery +
Reset
(IC1_71 pin)
Q2
R8

7
3.1.2.5. Speakerphone
The hands-free loudspeaker at SP+ and SP- is used to generate the ring alarm.
3.2. Test Mode
3.2.1. Handset
[Changed from original section “8.1.2. Handset”]
Frequently Used Items (Handset)
ex.)
Note:
(*1) When you enter the address or New Data, please refer to the table below.
(*2) When adding “01” (hex) to default value, sending level increases by 0.25 dB.
ex.)
(*3) When reducing “01” (hex) from default value, receiving level increases by 0.25 dB.
ex.)
(*4) Use these items in a READ-ONLY mode to confirm the contents. Careless rewriting may cause serious damage to the
handset.
Items Address Default Data New Data Possible Adjusted
Value MAX (hex)
Possible Adjusted
Value MIN (hex)
Remarks
Sending Level 07 F5 Adjusted value Given value FF D0 (*2)
Receiving Level 07 F6 Adjusted value Given value FF D0 (*3)
Battery Low 00 09 70 - - -
(*4)
Frequency 00 07 / 00 08 70/02 - - -
ID 00 02 ~ 00 06 Given value - - -
Desired Number (hex.) Input Keys Desired Number (hex.) Input Keys
00 A[R]+0
11 B[R]+1
.. C[R]+2
.. D[R]+3
.. E[R]+4
99 F[R]+5
Item Default Data New Data
E7 EB E3
Sending level -1.5 dBm -0.5 dBm -2.5 dBm
Item Default Data New Data
E7 EB E3
Receiving level -13.0 dBm -14.0 dBm -12.0 dBm

8
3.3. Troubleshooting Guide
3.3.1. Check Power
3.3.1.1. Handset
[Changed from original section “10.1.1.2. Handset”]
Cross Reference:
Power Supply Circuit/Reset Circuit (P.6)
Note:
(*1) Refer to Circuit Board (Handset_Main) (P.17).
Check Power Supply Circuit/Reset Circuit.
Check BBIC (IC1).
Check F1 is not open.
Check X1.
Is the voltage of BATT+ 2.3 V more? (*1)
Check the battery and around BATT+ and
BATT- are not shorted.
Is the battery inserted BATT+ and BATT-?
Does BBIC (IC1: 7) oscillate at 10.368 MHz?
YES
YES
YES
YES
NO
NO
YES
Is the voltage of +1.8V about 1.8 V? (*1)
Is the voltage of CP3V about 3.0 V? (*1)
Check BBIC (IC1).
YES
Is the voltage of CP4V about 4.0V ? (*1)
(When LED is On)
YES
NO
NO
NO

9
3.3.2. Check Link
3.3.2.1. Handset
[Changed from original section “10.1.5.2. Handset”]
Cross Reference:
Power Supply Circuit/Reset Circuit (P.6)
Check the RF part (P.10)
Note:
(*1) Refer to Circuit Board (Handset_Main) (P.17).
(*2) Refer to Check Point (Handset) (H).
Check around Power Supply Circuit/Reset Circuit.
Check BBIC (IC1)
Does Handset make link with Base Unit?
(Correct working unit)
Check around X1 and adjust clock frequency. (*2)
NO
NO
NO
NO
Is the voltage of "1.8V" about 1.8 V? (*1)
YES
YES
YES
YES
Is the voltage of CP3V about 3.0 V? (*1)
Does the RF clock (CKM) oscillate: 10.368 MHz
in Handset Test Mode?
Handset is OK. Check Base Unit.
YES
OK
Check the RF part.
NO
NO
Adjust 1.8V voltage to 1.8 V.
Is the voltage of CP4V about 4.0V? (*1)
(When LED is ON)

10
3.3.3. Check the RF part
[Changed from original section “10.1.6. Check the RF part”]
Note:
(*1) Refer to Commands.
(*2) Adjustment Standard (Base Unit).
(*3) Adjustment Standard (Handset) (P.12)
No. Item BU (Base Unit) Check HS (Handset) Check
1 Link Confirmation Normal
HS, BU Mode [Normal Mode]
1. Register Regular HS to BU (to be
checked).
2. Press [Talk] key of the Regular HS to
establish link.
1. Register HS (to be checked) to Regular
BU.
2. Press [Talk] key of the HS to establish link.
2X'tal Frequency confirmation
HS, BU Mode: [Adjustment]
Check X'tal Frequency.
(10.368 MHz ±41Hz)
Check X'tal Frequency.
(10.368000 MHz ±100 Hz)
3 TX confirmation
HS Mode:
[HS_Burst Mode] (*1)
BS Mode:
[BS_Burst Mode] (*1)
1. Remove wire antenna 2 and connect
spectrum analyzer to TP. (*2).
2. Confirm TX power whether spec. is
satisfied.
Power >=13.5dBm
1. Connect spectrum analyzer to TP. (*3)
2. Confirm TX power whether satisfied spec.
Power >=16.0dBm
5 Range Confirmation Normal
HS, BU Mode: [Normal Mode]
1. Register Regular HS to BU (to be
checked).
2. Press [Talk] key of the Regular HS to
establish link.
3. Compare the range of the BU (being
checked) with that of the Regular BU.
1. Register HS (to be checked) to Regular
BU.
2. Press [Talk] key of the HS to establish link.
3. Compare the range of the HS (being
checked) with that of the Regular HS.