Panasonic KX-TC1872B User manual

© 2000 Kyushu Matsushita Electric Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TC1868B
KX-TC1871B
KX-TC1872B
900MHz Cordless Answering System
Black Version
(for U.S.A.)
Telephone Equipment
ORDER NO. KM40008667C1
F11

1 STANDARD BATTERY LIFE 3
2 LOCATION OF CONTROLS 4
3 DISPLAYS 5
4 CONNECTION 8
5 OPERATION 10
6 DISASSEMBLY INSTRUCTIONS 18
7 ASSEMBLY INSTRUCTIONS 20
8 TROUBLESHOOTING GUIDE 22
9 TEST MODE AND ADJUSTMENT 36
10 DESCRIPTION 40
11 TERMINAL GUIDE OF IC´S, TRANSISTORS AND DIODES 44
12 BLOCK DIAGRAM (Base Unit) 45
13 NEW CIRCUIT OPERATION (Base Unit) 46
14 BLOCK DIAGRAM (Handset) 58
15 NEW CIRCUIT OPERATION (Handset) 59
16 CPU DATA (Base Unit) 62
17 CPU DATA (Handset) 63
18 EXPLANATION OF IC TERMINALS (RF Unit) 64
19 HOW TO REPLACE FLAT PACKAGE IC 65
20 CABINET AND ELECTRICAL PARTS (Base Unit) 66
21 CABINET AND ELECTRICAL PARTS (Handset) 67
22 ACCESSORIES AND PACKING MATERIALS 68
23 REPLACEMENT PARTS LIST 69
24 FOR SCHEMATIC DIAGRAM 75
25 CIRCUIT BOARD (RF Unit) 76
26 SCHEMATIC DIAGRAM (RF Unit) 77
27 CIRCUIT BOARD (Base Unit) 79
28 SCHEMATIC DIAGRAM (Base Unit) 81
29 CIRCUIT BOARD (Handset) 83
30 SCHEMATIC DIAGRAM (Handset) 85
CONTENTS
Page Page
2
KX-TC1868B / KX-TC1871B / KX-TC1872B

After your Panasonic battery is fully charged;
* Within about 10 feet (3 m)
1 STANDARD BATTERY LIFE
While in use (TALK) near the base unit* Up to about 6 hours
away from the base unit Up to about 4 hours
While not in use (Stand-By) Up to about 14 days
3
KX-TC1868B / KX-TC1871B / KX-TC1872B

2 LOCATION OF CONTROLS
(Base unit)
(Handset)
4
KX-TC1868B / KX-TC1871B / KX-TC1872B

3 DISPLAYS
Both the handset and the base unit show you instructions and information on the displays. These display prompts are shown
below.
3.1. Common prompts for the handset and the base unit
5
KX-TC1868B / KX-TC1871B / KX-TC1872B

3.2. Handset only
6
KX-TC1868B / KX-TC1871B / KX-TC1872B

3.3. Base unit only
7
KX-TC1868B / KX-TC1871B / KX-TC1872B

4 CONNECTION
Note:
• USE ONLY WITH Panasonic AC ADAPTOR PQLV1Z.
• The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.)
• If your unit is connected to a PBX which does not support Caller ID and voice mail services, you cannot access those
services.
8
KX-TC1868B / KX-TC1871B / KX-TC1872B

4.1. Adding Another Phone
This unit will not function during a power failure. To connect a standard telephone on the same line, use the Panasonic T-adaptor
KX-J66.
9
KX-TC1868B / KX-TC1871B / KX-TC1872B

5.1. Making Calls
5 OPERATION
5.1.1. With the Handset
10
KX-TC1868B / KX-TC1871B / KX-TC1872B

11
KX-TC1868B / KX-TC1871B / KX-TC1872B

5.1.2. With the Base Unit
12
KX-TC1868B / KX-TC1871B / KX-TC1872B

13
KX-TC1868B / KX-TC1871B / KX-TC1872B

5.2. Answering Calls
5.2.1. With the Handset
When a call is received, the unit rings and the CALLER ID button on the base unit flashes quickly. If you subscribe to a Caller
ID service, the calling party information will be displayed after the first ring. In order to view the Caller ID information, please wait
until the second ring to answer a call.
5.2.2. With the Base Unit
14
KX-TC1868B / KX-TC1871B / KX-TC1872B

5.3.1. Setting the Unit to Answer Calls
5.3. Automatic Answering Operation
15
KX-TC1868B / KX-TC1871B / KX-TC1872B

5.4. Listening to Messages
16
KX-TC1868B / KX-TC1871B / KX-TC1872B

5.4.1. During playback
17
KX-TC1868B / KX-TC1871B / KX-TC1872B

6 DISASSEMBLY INSTRUCTIONS
18
KX-TC1868B / KX-TC1871B / KX-TC1872B

Shown in Fig.- To Remove Remove
1 Lower Cabinet Screws (2.6 X 12).....(A) X 5
2 Main P.C. Board Remove the P.C. Board
3 Lower Cabinet Screw (3 X 12).....(B) X 1
Screws (3 X 8).....(C) X 3
4 Battery Cover Remove the Battery Cover
5 Rear Cabinet Screws (2.6 X 12).....(D) X 2
Screw (2.6 X 12).....(E) X 1
6 Main P.C. Board Screws (2.6 X 8).....(F) X 2
Remove the lead
Remove the P.C. Board
Note
*1 — After removing 2 screws (D), insert a (-) driver into *1 and pull it outside of the cabinet.
19
KX-TC1868B / KX-TC1871B / KX-TC1872B

7 ASSEMBLY INSTRUCTIONS
7.1. Asseembly the LCD to P.C. Board (Base Unit)
20
KX-TC1868B / KX-TC1871B / KX-TC1872B