Transcript
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VHF FM TRAN
TKSERVICE MANUAL © 2000-11 PRINTED IN JAPAN B51-8560-00(S) 790
Antenna (KRA-14:Option)
Knob (ENC) (K29-5331-03) Knob (VOL) (K29-5332-03)
Cabinet assy (A02-3568-23)
Knob (PTT) (K29-5334-13) Knob (Side1) (K29-5333-13) Key top (DTMF) (K29-9043-02)
CONTENTS GENERAL ...................................................................... 2
ADJUSTMENT ............................................................. 32
SYSTEM SET-UP .......................................................... 2
PC BOARD VIEWS
OPERATING FEATURES .............................................. 3
DISPLAY UNIT (X54-3250-10) ............................... 41
REALIGNMENT ............................................................. 7
TX-RX UNIT (X57-587X-XX) .................................. 43
DISASSEMBLY FOR REPAIR ..................................... 15
SCHEMATIC DIAGRAM .............................................. 49
CIRCUIT DESCRIPTION ............................................. 16
BLOCK DIAGRAM ....................................................... 53
SEMICONDUCTOR DATA .......................................... 20
LEVEL DIAGRAM ........................................................ 55
DESCRIPTION OF COMPONENTS ............................ 22
KNB-14/KNB-15A (Ni-Cd BATTERY) .......................... 56
PARTS LIST ................................................................. 23
OPTIONS ..................................................................... 57
EXPLODED VIEW ....................................................... 30
SPECIFICATIONS ................................... BACK COVER
PACKING ..................................................................... 31
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TK-272G OPERATING FEATURES The "Add" channel is contained in the scan sequence, the "Delete" channel is not contained. In the scan mode, this key switches the channel between delete or add, temporarily.
5) Key lock When the KEY LOCK switch is held down for one second or more, keys other than [PTT], [Side1], [Side2], [VOL], [POWER], and KEY LOCK are locked. When 12/16 KEY LOCK is set with the FPU, the DTMF key is locked and when front-panel KEY LOCK is set, the DTMF key and the [PF] key are locked.
13) Talk Around Press this key, the transceiver uses the receive frequency and tone for transmission. The operator can call the other party directly (without repeater). Press this key again, the talk around function goes off. 14) None An error operation beep sounds, and no action will occur. Use this function when the transceiver is required to be operated more simply.
3. Display
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6) Lamp This key illuminates the LCD and keys on the front panel. When the key is pressed, the LED lamp goes on. When it is released, the lamp goes off after about five seconds. If any key is pressed while the LED lamp is on, the lamp is kept on for five seconds.
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4) Home Channel Press this key once, the channel switches to the preprogrammed home channel.
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7) Monitor Used to release signalling or squelch when operating in conventional mode. It is also used to reset option signalling.
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8) Operator Selectable Tone This key switches the pre-set decode QT/DQT and encode QT/DQT to OST (Operator Selectable Tone) tone pair. Press this key, the transceiver enters OST mode. In this mode, the display shows "OFF" and the operator can select one of the OST tone pair using the tuning control. The display shows "TONE ∗∗" and tone pair No. ∗∗ is selected. Press OST key again, the transceiver exits from OST mode, and returns to the group/channel mode. 16 tone pairs for OST can be programmed by KPG-56D. OST is useful to access the repeater with same radio frequency and different tone (QT/DQT).
Icon
Appears while using Smar Trunk. Appears when the selected channel is busy. Appears when QT, DQT, DTMF, or 2Tone decoding is deactivated (by pressing the Monitor key). Appears when you receive a Code Squelch, Selective Call, 2-Tone, or DTMF Signalling call. Also appears when you transmit using Code Squelch or Selective Call.
9) 2-Tone Encode Select 1 Press the key programmed as 2-tone Encode Select. • A pre-programmed 2-tone code name appears on the display. 2 Press the key programmed as Rotary encoder to select you desired 2-tone code name. 3 Press PTT switch and 2-Tone Encode Select key to transmit and release them to receive.
Appears while scanning. Appears when using low power on the selected channel. Appears when the selected channel is included in the scanning sequence. Displays the selected channel, the squelch level, DTMF digits (when entering digits, confirming digits, or making a call), and messages received via Selective Call.
10) RF power low Used to temporarily switch transmission output to low power. Turning the function on enables: Hi→Low, Low→Low Key states are backed up, except in the PC mode when they are reset. 11) Scan Pressing this key starts scanning. Pressing this key again stops scanning. 12) Scan Del/Add This key switches the currently displayed channel between "Delete" and "Add". 4
Description
4. Scan Operating 1) Scan types Single Group Scan You can scan all valid (ADD) channels in the displayed group that can be selected with the group selector. ●
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A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
TK-272G
PC BOARD VIEW
1
2
DISPLAY UNIT (X54-3250-10) Foil Side View
DISPLAY UNIT (X54-3250-10) Component Side View DISPLAY UNIT (X54-3250-10) Component Side View
L502
Q501
B Q501
LCD
R522
C506
ic
C509 D504 C508
D504
C509 C508
C506
C507
R509
R509
rv
D502
CP501
D503
D503
se
48
R508
R508
R507
33
L501
D502 C507
49
R507
CP502
D515
D515
D516
CP502
R510
R510
Ref. NO. IC501 Q501 Q502 D501 D502 D503 D504 D505 D506 D507 D508 D509 D510 D511 D512 D513 D514 D515 D516
3
Address 4N 4K 4L 4O 5M 5M 5M 4O 4K 4L 8L 9L 10L 4P 8O 9O 10O 7L 7O
4
5
6
R502
L501
R517
32
33
D511
C515
D505
C Q502
B
R511 R516 C513 R515 R514
R513
IC501
C501 R501
48
64
E
E
Q502 C
1
17
C516 D507
rm
ere pa i
R501 C501
CP501
32 D501
D505
49
R522
D507 C516
C515
LCD
R517
R518
D506
R514 R515 C513 R516 R511
IC501
R518
D506
17
an ua l
64 R513
16
D501
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16
L502
1
R502
Address 4E 4H 4G 4D 5F 5F 5F 4D 4H 4G 8G 9G 10G 4C 8D 9D 10D 7G 7D
D511
Ref. NO. IC501 Q501 Q502 D501 D502 D503 D504 D505 D506 D507 D508 D509 D510 D511 D512 D513 D514 D515 D516
DISPLAY UNIT (X54-3250-10) Foil Side View
D516
C502 R524
R524
C502 CP503
A
A
3 C503
C503
6 R505
R520
C505
8
9
D514
∗
J72-0663-02
#
5 R505
C505
D512
R523
1
R506
D513
1
CE 5M DI CL GND LMP K N0 K N1 K N2 K N3 K N4 KOUT0 KOUT1 KOUT2 KOUT3 SB
C
C
9
8
B
D
D
#
LED d i r e c t i o n
LED d i r e c t i o n
E C
9 2SB1132(Q,R)
7
B C
E
10
LC75823W
D514
D510
8 2SC4617(S)
4
D509
D510
0
6
R520
D509
7
R503
D508
B
B R521
D513
R523
R519
R519
D508
5
R506
16
2
C504
3 R503
D512
1 R504
C504
4
2
R521
CN501
CE 5M DI CL GND LMP K N0 K N1 K N2 K N3 K N4 KOUT0 KOUT1 KOUT2 KOUT3 SB
R504
16
CN501
R512
1
7
R512
CP503
∗
0
11
12
J72-0663-02
Component Side
Component Side
Foil Side
Foil Side 13
41
42 14
