Kenwood TM-241A, TM-241E Service manual

Page 1

Photo is TM-241A. * Refer to parts list on page 12.

CONTENTS

CIRCUIT DESCRIPTION 2
DESCRIPTION OF COMPONENTS 9
PARTS LIST 12
EXPLODED VIEW
PACKING
ADJUSTMENT 25
PC BOARD VIEWS/CIRCUIT DIAGRAM
LCD ASS'Y (B38-0330-05)
PLL (X58-3470-00)
APC (X59-3130-00) 32
MIC AMP (X59-3610-00) 32
TX-RX UNIT (X57-369X-XX)

e.

SCHEMATIC DIAGRAM
TERMINAL FUNCTIONS
BLOCK DIAGRAM
LEVEL DIAGRAM
DRU-1 (DIGITAL RECORDING UNIT)43
DTU-2 (DTMF UNIT)51
MC-44 (MULTI FUNCTION MICROPHONE)54
MC-44DM/MC-44DME (MULTI FUNCTION
MICROPHONE WITH AUTOPATCH)53
MC-44E (MULTI FUNCTION MICROPHONE)55
TSU-6 (CTCSS UNIT)
SPECIFICATIONSBACK COVER
Page 2

CIRCUIT DESCRIPTION

TM-241A TM-241E
K,P М M2 E E2
0-11 0-21 0-22 2-71 2-72
K,P
0-11
TM-241A
K,P M
0-11 0-21
TM-241A K,P M M2 0-11 0-21 0-22 TM-241A TM-241A K,P M M2 E 0-11 0-21 0-22 2-71
Table 1

Circuit Configuration By Frequency

The TM-241A/E incorporates a PLL synthesizer which uses a digital VFO to allow any channel step of 5, 10, 12.5, 15, 20, or 25 kHz to be selected (See Figure 1).

The receiving system utilizes double-conversion techniques. That is, an incoming signal is mixed down to the 1st intermediate frequency (IF) of 10.7 MHz, using a 1st local oscillator frequency of from 133.300 to 135.295 MHz ( E,M ), 125.300 to 163.295 MHz ( K,P,E2,M2 ). The 1st IF signal is then mixed with the 2nd local oscillator frequency of 12.8 MHz to generate the 2nd IF of 455 kHz.

The transmitting system consists of a PLL circuit which allows direct modulation and direct frequency division. Signals from the PLL circuit are amplified by a linear amplifier for transmission.

Fig. 1 Frequency configuration

Receiving System
Overview

Incoming signals from the antenna pass through a low-pass filter in the final block of the transmitter system, and are switched to the front-end of the receiver system via a receive/transmit switching diode.

The signals are then passed through an antenna matching coil, where the high-frequency components are amplified by a GaAs FET. The signals are then fed into a three-stage bandpass filter that uses vari-cap tuning to reject unwanted signal components, and is fed

to the 1st mixer. The 1st mixer uses the N-channel MOS FET that are used in the RF stage to obtain better twosignal characteristics. The 1st mixer mixes the signal with the 1st local oscillator frequency and converts it to the 1st IF (10.7MHz). The signal then passes through two monolithic crystal filters (MCFs) to remove unnecessary near-by frequency components. The signal from the MCFs is used as the 1st IF signal.

The 1st IF signal is amplified and fed into IC1 (KCD04) in the FM IF HIC. The IF signal is then mixed with the 2nd local oscillator frequency of 10.245 MHz to generate the 2nd IF of 455 kHz. The 455 kHz signal is then passed through a six element ceramic filter (CFWM455F), and fed back into IC1 for additional amplification. The output signal from the IC1 is then fed into a power asmplifier via the audio volume control for application to the speaker.

S-meter circuit

S-meter control voltage from IC1 (KCD04) in the FM IF HIC is fed into the control unit. The CPU converters the voltage from an analog to digital signal in order to operate the LCD bar meter.

ltem Rating
Nominal center frequency (fo) 10.7MHz
Pass band width ±7.5kHz or less at 3dB
Attenuation band width ±25kHz or less at 40dB
±45kHz or less at 60dB
Ripple 1.0dB or less
Insertion loss 1.5dB or less
Guaranteed attenuation 70dB or more within ±1MHz
(Spurious : 40dB or more at fo - fo + 500kHz)
80dB or more at fo - (900 - 920kHz)
Terminating impedance 3kΩ/0pF
ltem Rating
Nominal center frequency 455kHz ± 1kHz
6dB bandwidth ±6kHz or more (from 455kHz)
50dB bandwidth ±12.5kHz or less (from 455kHz)
Ripple
(within ±4kHz of 455kHz)
3dB or less
Insertion loss 6dB or less
Guaranteed attenuation
(within ±100kHz of 455kHz)
35dB or more
I/O matching impedance 2.0kΩ

Table 2 MCF (L71-0228-05) (TX-RX unit XF1)

Table 3 Ceramic filter CFWM455F (L72-0372-05) (TX-RX unit CF1)

Fig. 2 Front-end section (vari-cap tuning)

Page 3

TM-241A/E

CIRCUIT DESCRIPTION

Transmitting System

Overview

The transmitter produces the target frequency thru the use of direct FM-modulation via a varactor diode.

Modulation circuit

Audio signals from the microphone are fed into the mic amplifier unit for amplification by the first transistor amplifier, and then into two operational amplifiers. The operational amplifiers form a splatter filter for preemphasis, amplification, limiting, and removal of unnecessary high-frequency components.

The FM modulation circuit directly FM-modulates the VCO signals, using a varactor diode.

Pre-amplifier stage circuit

Signals from the VCO are applied to the drive HIC IC8 (KCB05). The amplifier always operates in a linear mode so that signals can be amplified without degradation. Additionally, the amplifier is designed to cover a wide range of frequencies and can produce stable output without adjustment. The APC (Automatic Power Control) controls collector voltage from the last stage of the pre-amplifier.

Power amplifier circuit

The drive signal is amplified to the required level by the power module. The TM-241 A/E uses a large heat sink for efficient heat dissipation.

· APC circuit

The APC circuit for automatic transmit output control detects part of the power module output, and amplifies it to provide a control voltage for output control. The output control voltage is in inverse proportion to the output from the power module, so it is maintained at the same level.

(Tc = 25°C
ltem Symbol Condition Rating Unit
Operating voltage Vcc 16 V
Control voltage VCON 16 V
Current consumption IT 14 A
Input power Pi 600 mW
Output power Po 12.5V < Vcc ≤ 16V, VcoN ≤ 12.5V
Pi = 0 ~ 500mW, Zg = ZL = 50Ω
65 W
Operating case temperature Tc(opr) -30 ~ +100 °C
Storage temperature Tstg -40 ~ +110 °C

Table 4 Power module S-AV17 maximum ratings (IC301)

Page 4

CIRCUIT DESCRIPTION

PLL Synthesizer Unit

Figure 4 is the PLL and VCO block diagram. In the TM-241 A/E, the PLL system is implemented as a subunit which is divided into the upper VCO and lower PLL blocks. The sub-unit is shielded to prevent external interference.

There are two reference frequencies, 6.25kHz and 5 kHz, available to allow 5, 10, 12.5, 15, or 25 kHz-step operation. The 6.25kHz is obtained by dividing the reference oscillator frequency of 12.8MHz by 2048, and the 5kHz is obtained by dividing it by 2560. The VCO directly generates the dial frequency. This dial frequency is amplified once and then fed into a pulse swallow-type PLL IC for frequency division and phase comparison, in order to lock the frequency.

The PLL system is locked without switching between transmit mode and receive mode. By using a signal ("H" in transmit mode) from pin 11 of the PLL IC (M54959FP), the LPF is deactivated-activated by Q52 and Q53 only for the moment when the TM-241 A/E enters transmit mode. This helps produce lock more rapidly than previous methods.

In 144MHz mode, fvco (RX) is calculated by the folowing formula:

fvco = (144 + 10.7) = {(n x 128) + A} x fosc / R where,

  • fvco : VCO output frequency
  • Binary value of the 10-bit programmable counter
  • A : Binary value of the 7-bit programmable counter
  • fosc : 12.8MHz reference frequency
    • Binary value of the 14-bit programmable counter

2560 (5, 10, 15, 20, or 25kHz step mode) 2048 (12.5kHz step mode)

In 5, 10, 15, 20, or 25kHz step mode,

n = 208 and A = 36.

Therefore, fvco is calculated as follows:

  • fvco = {(208 x 128) + 36} x 12800 / 2560
    • = {26624 + 36} x 5 = 133300= 133,300MHz
      • = 133300= 133.300MHz

Fig. 4 PLL block diagram

Page 5

CIRCUIT DESCRIPTION

• 8T (8V in transmit mode) and unlock circuits

In receive mode, the base of Q17 has 0.7V. As a result, Q17 is on, and Q16 and Q14 are off, and the collector of Q14 (8T) provides no voltage.

The CPU outputs serial data to the shift register IC5 when the PTT switch is depressed. As a result, pin 8 of IC5 becomes "L", turning Q17 off, and Q16 and Q14 on. The 8T line is therefore supplied with 8V.

The unlock circuit operates only in transmit mode. Q18 is a PLL unlocking switching transistor. Usually, the base of Q18 is supplied with 0V (''L''), and the collector is supplied with 8V (''H'').

When the PLL is unlocked, the base of Q18 is supplied with 0.7V, turning Q18 on. As a result, the collector of Q18 becomes "L" (0V). This turns Q16 off and the collector of Q14 becomes 8V, turning it off. Therefore, when the PLL is unlocked, Q14 is off removing bias voltage from the 8T line. Without the 8T voltage no transmit signal is generated.

Overview

The digital control unit consists of a several keys, a rotary encoder input, a display, a reset circuit, a back-up circuit, and a tone output circuit. These circuits are controlled by a single microcomputer (CPU).

Key and rotary encoder input circuits

The keys on the panel are arranged in matrix. Key input is fed into the CPU, using a key scan technique. Output from the rotary encoder is fed directly into the CPU.

Microphone key input circuit

The UP, DOWN, and other function keys of the microphone are directly connected to their corresponding analog input pins of the CPU. Each of the functions is activated by a voltage generated when the corresponding key is pressed.

Reset and back-up circuits

When the TM-241 A/E power is turned on, the reset circuit sends a "L" level pulse to the RESET pint of the CPU for approx. 3 ms. This initiates the power-on reset sequence.

When the TM-241 A/E power is turned off, the backup circuit detects a voltage drop in the 5 C line and sets CPU INT4 to a "H" level. This causes the CPU to enter a back-up state.

TM-241A/E

Fig. 5 8T and unlock circuits

Fig. 6 Microphone key input circuit

Page 6

CIRCUIT DESCRIPTION

Display circuit

The display circuit is contained in the LCD assembly. It consists of a LCD driver, its peripheral circuits, and an LCD. The LCD is dynamically operated at a 50% duty cycle. The LCD driver receives LCD data from P33, P140, and P141 of the CPU.

Dimmer circuit

The lamp circuit generates a constant voltage of about 8.8 V with SB, Q205, and D202. The lamp circuit resistance is changed by turning Q203 and Q204 on and off to control the dimmer. If the lamp is shorted, Q206 decreases the Q205 VBE to prevent an overcurrent from flowing through Q205.

Fig.10 Dimmer circuit

Shift register circuit

The shift register circuit consists of IC5 (TC9174F). The IC5 receives serial data from the microcomputer to perform the controls listed below.

Pin No. Pin name Function
1 GND
2 B1 Usually "H".
3 B2 Open.
4 CE Electronic VOL select :
"H" when electronic VOL selected, "L" when
panel VOL selected or interface connected.
5 VOLD Electronic VOL DOWN ; "L" when DOWN key ON.
6 VOLU Electronic VOL UP : "L" when UP key ON.
7 MUTE AF MUTE : "H" when TX mode, AL 1ch receive mode, CTCSS, bell, or squelch is ON.
8 T/R Transmit/receive select : "H" in RX mode,
"'L" in TX mode.
9 TXM TX power select : "H" in HI or MID mode,
"L" in LOW mode.
10 ТХН TX power select : "H" in HI mode,
"L" in MID or LOW mode.
11 - Open.
12 - Open.
13 DATA Serial data input.
14 CLOCK Clock input.
15 EN Enable input.
16 VDD

Table 5

Tone output circuit

R246 (ladder resistor) receives signals from P40 to P43 and P50 to P53 of the CPU and converts them from digital to analog to produce 38 different waveforms from 67.0 Hz to 250.3 Hz. Figure 8 shows the internal configuration of R246.

Fig.8 Internal configuration of ladder resistor (TX-RX unit B/2 R246)

Page 7

TM-241A/E

CIRCUIT DESCRIPTION

PLL data output

Shift register

swallow counter

main counter Port setting

frequency select

Division ratio A in 20 21 23 27 24 28 24

PLL data is available from P21 (CK), P22 (DT), and P23 (EP1) of the CPU. Figure 9 is a timing chart for PLL data transfer, and Figure 10 shows the format of PLL

Fig. 9 timing chart for PLL data transfer

Input and output of CTCSS unit (option)

The optional CTCSS unit receives data from P21, P22. an P73 of the CPU. Figure 11 is a timing chart for CTCSS data transfer, and Figure 12 shows the format of CTCSS data. When a tone from the CTCSS unit is detected, a "H" level signal is sent to P63 of the CPU, opening the squelch.

· Input and output of the remote control unit (option)

When the optional remote control unit is connected, a "H" level signal is applied to INTO of the CPU, and the following pins have different functions:

  • P03 → S1 : Serial data input pin
    • P02 → S2 : Serial data output pin
  • P01 → SCK : Serial clock I/O pin

Fig. 11 Timing chart for CTCSS data transfer
Tone frequency select data for CTCSS unit

Example: 88.5Hz L H L H

Fig. 12 CTCSS data format

2. Reference frequency (ref) select (2 bits)

The 21-bit data is made up of the following:

1. Division ratio data A and N (17 bits)

= ((N x 128) + A) x 12.8MHz / ref

Data Phase reference
D1 D2 frequency and the second se
L L 5kHz 5, 10, 15, 20, 25kHz step mode
н L 6.25kHz 12.5kHz step mode

N : Division ratio set in 10-bit main counter (binary)

A : Division ratio set in 7-bit swallow counter (binary)

3. Switch select (2 bits)
Data Output port
SW2 SW1 D4 D3
RX mode н L н L
TX mode L. Н L н

Fig. 10 PLL data format

Page 8

CIRCUIT DESCRIPTION

Pin No. Pin name 1/0 Logic Function Pin No. Pin name 1/0 Logic F unction
1 P41 0 33 PTH01 -1 + Mic DOWN/M IR/PF input
2 P40 0 1 - 1 34 PTH00 Ť - Mic UP/CALL/ VFO input
3 P53 0 - D/A digital putaut (taga) 35 TIO 1 н CTCSS DET
4 P52 0 - D/A digital butput (tone), 36 TI1 1 L Not used: (GN D)
5 P51 0 - Dimmor coloct 37 P23 0 L PLL IC enable output.
6 P50 0 ÷ Diminier select 38 P22 0 42 Serial data out put.
7 RESET 1 L Reset input. 39 P21 0 1.0-0 Serial clock out tput,
8 X2 ÷ - 40 P20 0 - Beeper output
9 X1 + - 4.134304IVINZ Crystal Oscillator. 41 P03/S1 1/1 L/- Serial data inpu ut. (KENWOOD BUS)
10 P63 1 Н Function display 42 P02/SO 1/0 L/- Serial data out put. (KENWOOD BUS)
11 P62 0 н DRS remote control ST 43 P01/SCK 1/- L/- Serial clock I/C . (KENWOOD BUS)
12 P61 0 - DRS unit Reset ACL 44 INT4 1. н Back-up detect input, (Back-up; HI)
13 P60 T H DTMF Signal detect 45 P123 1. L CALL, VFO
14 P73 0 н CTCSS unit enable output. 46 P122 1 L F. MR/M
15 P72 0 н Shift register enable output. 47 P121 1 L SHIFT, MHz Destination
16 P71 0 н DRS unit VOB output. 48 P120 1 L TONE key input.
17 P70 0 н DRS unit VOA output. 49 P133 1 L REV
18 P83 0 н DRS OF, DTSS EN 50 P132 1 L LOW, DRS/DT SS
19 P82 0 Н DRS unit STBY output. 51 P131 1 L Not used (GND 0)
20 P81 0 L DTSS DTSEL output . DRS unit WR output 52 P130 1 L Busy input
21 P80 0 L DRS unit RD output. 53 P143 0 L Squelch contro ol.
22 P93 0 н DRS unit data output. D8/D3 54 P142 0 н Power SW.
23 P92 0 Н DRS unit data output. D4/D2 55 P141 0 - LCD driver clo ck output.
24 P91 0 н DRS unit data output. D2/D1 56 P140 0 - LCD driver dat a output.
25 P90 0 Н DRS unit data output. D1/D0 57 NC - - Not used. (Von )
26 Vss ÷ - GND. 58 VDD - - Power supply pin.
27 P13 1 Н DRS unit connect check. 59 P33 0 - LCD driver ena able output.
28 INT2 1 - Encodering 60 P32 0 L Distination out put.
29 INT1 1 Encoder Input. 61 P31 0 L P.C.P.
30 P10 1 Н Remote connect detect input. 62 P30 0 L Key output.
31 PTH03 Ĵ. S-meter analog input. 63 P43 0 -
32 PTH02 1 - Not used. (GND) 64 P42 0 1 D/A digital out put (tone).

Table 6 75116GF-728-3BE terminal functions (TX-RX unit IC201)

Page 9

DESCRIPTION OF COMPONENTS

Component Use/Function Operation/Condition/Compatibility
IC1 2nd local oscillator,
IF amplification,
detection,
low-frequency amplification,
noise amplification,
noise detection,
squelch switching
  • 1st IF signal input (10.7MHz).
  • 2nd local oscillator (10.245MHz).
  • Busy output.
  • Squelch control.
  • S-meter output.
  • RD output.
  • Low-frequency output.
IC2 AM detector
IC3 AF amplification ① AF input, ⑧ AF output.
IC4 Electronic volume control,
AF switch
② AF output. ⑦ Panel volume input. ③ ''L'' during step-up. ⑧ Panel volume output. ④ ''L'' during step-down. ⑩ AF input. ⑤ ''H'' when electronic volume selected.
IC5 Shift register See circuit description.
IC6 5V AVR
IC7 10V AVR For PLL.
1C8 Transmit drive
IC9 8V AVR
IC201 Microprocessor See circuit description.
IC202 6V AVR
Q1 High-frequency amplification Operates in receive mode.
Q2 11R switching On when the aircraft band is selected.
Q3 BPF switching On when the aircraft band is selected.
Q4 1st mixer Converts received 144 MHz-range signals to 1st IF 10.7 MHz.
Q5 High-frequency amplification Amplifies 1st IF signal.
Q6 Q5 Gain control
Q7 Detector output switch When the aircraft band is selected, the FM detection switch is turned off.
Q8 AF amplifier When the aircraft band is selected, the output signal from the AM detector is amplified.
Q9 (1/2) RD line mute ON when DRS unit replays.
Q9 (2/2) AF line mute
Q10 Low-frequency amplification Operates when DRS unt replays.
Q11 2nd local oscillator buffer
Q12 AF line mute Operates when transmit mode, AL 1ch receive mode, CTCSS, bell or squelch is ON.
Q13 8R switching ON in receive mode.
Q14 8T switching ON in transmit mode.
Q15 8R switching control ON in receive mode.
Q16 8T switching control ON in transmit mode.
Q17 8T switching control OFF in transmit mode.
Q18 8T switching control OFF when PLL locked.
Page 10

DESCRIPTION OF COMPONENTS

Component Use/Function Operation/Condition/Compatibility
Q19 Mic line mute ON in receive mode.
Q20 PLL 8V ripple filter
221 CV line buffer
022 VCO output amplification
Q23 TX power select ON in HI or MID mode.
Q24 TX power select
Q25 TX drive stage +B control
026 Power switch
227 Power switch control ON when power switch is ON.
028 Squelch hysteresis On when the squelch is on
2201, 202 Function dimmer switch Refer to circuit description.
2203, 204 Lamp dimmer switch
0207 Reset switch ON for approx. 3ms
when system power turned on,
usually OFF.
2208 Back-up switch OFF when 13.8 V line becomes DIM
2209, 210 Dimmer switch ON/OFF Turn Q201~Q204 on or OFF dimmer 1 2 3 4 Q209 ON OFF ON OFF Q210 ON ON OFF OFF
0211 Function drive switch
2212 Mic mute On when DTSS and paging codes are sent.
01 Band select switch. (AM/FM) On when the aircraft band is selected.
02~6 Vari-cap tuning
07~9 Reverse current prevention
010 VCO output switch
011 Temperature compensation For APC.
012,13 Transmit/receive switching.
Page 11

TM-241A/E

DESCRIPTION OF COMPONENTS

Component Use/Function Operation/Condition/Compatibility
D14,15 Power detection For APC
D16 Reverse power protection
D202 Lamp standard voltage
D203 Dimmer switch
D204, 205 D205 switches in the lithium battery when the power is off
D206~211 Used for destination setting.
D212 CPU protector.
D213 Reverse current prevention
D214 Back-up detection voltage
D215 Reset detection voltage
D216 Function LED

PLL (X58-3470-00)

Component Use/Function Operation/Condition/Compatibility
IC51 PLL
  • VCO input 133.300~135.295MHz (E,M), 125.300~163.295 MHz (K,P,E 2 ,M 2 ) in receive mode, 144,000~145.995MHz (E), 144,000~147.995 MHz (E,M) 136.000~173.995 MHz (E 2 ,M 2 ) in transmit mode.
  • ''L' in transmit mode.
  • ''L' in transmit mode.
Q51 VCO output buffer
Q52 Transmit switch OFF in transmit mode.
Q53 Transmit switch ON for moment when transmission starts
Q101,102 LPF
Q1 VCO output buffer
Q2 VCO 133.300~135.295MHz ( E,M ), 125.300~163.295MHz ( K,P,E 2 ,M 2 ) in receive mode.
144.000~145.995MHz ( E ), 144.000~147.995MHz ( K,P,M ) 136.000~173.995 MHz ( E 2 ,M 2 )in
transmit mode.
D1 For modulation in TX mode
D2 VCO voltage control

APC (X59-3130-00)

Component Use/Function Operation/Condition/Compatibility
Q1 Differential amplification epsite on a company of the part of the
02 (2/2) APC control
Q3 Drive stage +B AVR

MIC AMP (X59-3610-00)

Component Use/Function Operation/Condition/Compatibility
IC1 (1/2) Limited amplification spectrum, company company
IC1 (2/2) LPF
Q1 Low-frequency amplification
Page 12

* New Parts

PARTS LIST

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Telle ohne Parts No. werden nicht geliefert.

Ref. No.
参照者号
Address
位 音
Parts Parts No. Description Desti-
nation
Re-
31 100 HH 10 73 副唱台/观悟
TM-241
甘同 加度視
1 1 1101-241 1 1
1
2
3
4
5
18
28
1C
28
2A
* A01-1065-03
A01-1066-03
A10-1292-01
A22-0770-03
A62-0007-23
METALLIC CABINET(TOP)
METALLIC CABINET(BOTTOM)
CHASSIS CALKED ASSY
SUB PANEL
PANEL ASSY
KMM2P
24 * A62-0008-23 PANEL ASSY EE2
5
7
3
9
28
28
28
18,10
¥ B11-0484-08
B30-0869-05
B38-0330-05
B42-2455-04
B42-3343-04
FILTER(LCD)
LAMP
LCD ASSY
LABEL(MAX8 MAX)
S/NO LABEL(NAME PLATE)
1A
1B
1B
* * 842-3356-04
842-3394-04
862-0031-00
862-0032-00
862-0032-00
LABEL(EXT SP)
FCC LABEL
INSTRUCTION MANUAL
INSTRUCTION MANUAL
INSTRUCTION MANUAL
K
K
MM2P
EE2
2
0
* B62-0033-00
B72-0093-04
B72-0094-04
B72-0095-04
B46-0410-20
INSTRUCTION MANUAL
MODEL NAME PLATE
MODEL NAME PLATE
MODEL NAME PLATE
WARRANTY CARD
EE2
KP
MM2
EE2
K
0 846-0419-00
846-0422-00
WARRANTY CARD
WARRANTY CARD
E p
3
4
5
1C
1C
E30-2111-05
E30-2137-15
E30-2145-05
E31-3197-15
DC CABLE
DC CABLE
ANT CABLE
CONNECTING WIRE(SP)
6
7
9
1C
1B
1B
¥ F05-1531-05
F05-2036-05
F15-0670-04
F20-0587-04
F20-1059-04
FUSE 15A
FUSE 20A
SHADE
INSULATING BØARD(LITHIUM BATT)
INSULATING BØARD(LITHIUM BATT)
1
2
3
4
18,1C
2A
18,2C
G02-0565-04
G02-0576-14
G09-0405-05
G10-0651-04
G10-0681-04
FLAT SPRING
FLAT SPRING
SPRING (KNOB)
NON-WOVEN FABRIC(SP)
NON-WOVEN FABRIC(CHASSIS)
КР
5 18,28
28
G10-0686-04
G13-0906-04
NON-WOVEN FABRIC(CASE)
CUSHION (3KEY)
7
8
2A
2B
G13-0926-04
G13-0960-04
G13-0961-04
CUSHION (CONT)
CUSHION (6KEY)
CUSHION (LOW)
9 H10-2658-02 POLYSTYRENE FOAMED FIXTURE
0 A
0 B
0 B
1
2
H11-0822-04
H11-0823-04
H11-0823-04
H13-0814-04
H13-0825-04
POLYSTYRENE PLATE
POLYSTYRENE PLATE
POLYSTYRENE PLATE
PROTECTION SHEET
PROTECTION SHEET
K
MM2P
EE2
MM2P
2 6 6 * } H13-0825-04
H52-0054-04
H52-0055-04
PROTECTION SHEET
ITEM CARTON BOX
ITEM CARTON BOX
EE2
KMM2P
EE2

E: Scandinavia & Europe K: USA P: Canada W:Europe U: PX(Far East, Hawaii) T: England M: Other Areas

UE : AAFES(Europe) X: Australia

TM-241A: K, P, M, M2 TM-241E: E, E2

Page 13

TM-241A/E

PARTS LIST

* New Parts Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Telle ohne Parts No. werden nicht gellefert.

TX-RX UNIT (X57-369X-XX)
Ref. No.
参照香号
Address
位 置
New
Parts
Parts No.
部品番号
Description
部品名/規格
Desti-
nation
仕 向
Re-
marks
備考
-
33
34
35
H10-2658-02
H25-0029-04
H25-0117-04
H25-0720-04
POLYSTYRENE FOAMED FIXTURE
PROTECTION BAG(MIC HOOK)
PROTECTION BAG(DC CABLE)
PROTECTION BAG(RADIO)
KP
37
38
40
41
1C
2A
J19-1434-04
J20-0319-24
J21-4303-08
J29-0436-03
HØLDER(SP)
MIC HØØK
MØUNTING HARDWARE(LCD ASSY)
BRACKET
Κ₽
42
43
44
45
46
28
28
28
28
2A
2A
K27-3035-14
K27-3066-04
K27-3067-04
K27-3068-04
K27-3068-04
K27-3069-04
KNOB(ENCODER)
KNOB(POWER SW)
KNOB(LOW)
KNOB(CALL)
KNOB(FUNC)
47
48
49
50
51
2A
2A
2A
2A
2A
2A
* K27-3071-04
K27-3072-04
K27-3074-04
K27-3075-04
K29-3156-04
KNØB(TONE)
KNØB(REVERSE)
KNØB(SHIFT)
KNØB(DR/DT)
KNØB(MAIN)
52 2A K29-3157-04 KNOB(VOL)
A
B
C
G
28
28
1C,2C
N09-0626-04
N09-0650-05
N33-2606-45
N46-3010-46
N87-2606-46
SCREW(POWER MODULE 3X10)
SCREW(SUB PANEL)
OVAL HEAD MACHINE SCREW(CASE)
PAN HEAD TAPPING SCREW
BRAZIER HEAD TAPTITE SCREW
КP
E
F
53
28
28
N87-2610-46
N88-2606-46
N99-0331-05
BRAZIER HEAD TAPTITE SCREW
FLAT HEAD TAPTITE SCREW
SCREW SET
SP
54
54
54
10 T07-0246-05
T91-0379-25
T91-0380-35
T91-0382-25
LOUDSPEAKER
MICROPHONE
MICROPHONE(DTMF)
MICROPHONE(1750Hz TONE)
MM2
KP
EE2
IC1
IC301
- LC7582
S-AV17
1C(LCD DRIVER)
IC(POWER MODULE FOR 144MHZ)
55
56
28 W01-0414-04
W09-0326-05
WRNCH
LITHIUM BATTERY
57
57
57
57
57
28,2C
28,2C
28,2C
28,2C
28,2C
28,2C
* X57-3690-11
X57-3690-21
X57-3690-22
X57-3692-71
X57-3692-72
TX RX UNIT
TX RX UNIT
TX RX UNIT
TX RX UNIT
TX RX UNIT
KP
M
8
5
2
TX-R X UNIT (X5 7-369X-XX) 0-1
2-7
1: TM-241A (K, P), 0-21: TM-241A (M), 0-22: TM-24
1: TM-241E (E), 2-72: TM-241E (E2)
1A (M2)
C1
C2
C3
C3
C3
CC73FCH1H040C
CC73FCH1H060D
CC73FCH1H040C
CC73FCH1H070D
CC73FCH1H070D
CHIP C 4PF C
CHIP C 6PF D
CHIP C 4PF C
CHIP C 7PF D
CHIP C 7PF D
CHIP C 7PF D
KP
KP
MM2
BE2
C4 15
C6 7
C8
C9
C10
CK73FB1H102K
CK73FB1H102K
CK73FB1H103K
CK73FB1H103K
CK73FB1H102K
CC73FCH1H0R5C
CH1P C 1000PF K CH1P C 1000PF K CH1P C 0.010UF K CH1P C 1000PF K CH1P C 0.5PF C KP
C11 CC73FCH1H470J CHIP C 47PF J

indinavia & Europe K: USA P: Canada W

U: PX(Far East, Hawaii) T: England M: Other Areas

UE : AAFES(Europe) X: Australia

TM-241A: K, P, M, M

M-241E: E, E2

Page 14

* New Parts

PARTS LIST

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Telle ohne Parts No. werden nicht geliefert.

TX-RX UNIT (X57-369X-XX) Ref. No. Address New Parts No. Description Desti- Renation marks 主 向 備考 参照番号 位 筐 新 部品番号 部品名/規格 CK73FB1H103K 0.010UF 1000PF CHIP C CC73FCH1H470J 1000PF CK73FB1H102K 1000PF 1000PF 0.010UF 22PF CK73FB1H102K CHIP C 150PF CK73FB1H102K CK73EF1C105Z 1.0UF 0.022UF CHIP TAN CHIP C C38 CHIP TAN CHIP C C92-0002-05 CK73EF1C1052 35WV ELECTRO 10WV CK73EB1H104K CE04EW1A471M ELECTRO 10WV CH1P C ELECTRO 0.010UF 47UF 16WV -53 IOWV CC73FSL1H101J CHIP C ELECTRO ,58 CK73EF1C105Z IOWV C61 092-0504-05 CHIP TAN 0.68UF 20WV CE04EW1A470M CHIP TAN CHIP C 20WV K C65 ,66 CHIP-TAN 1.5UF 0.010UF 1000PF 6.3WV CK73EB1H473K CK73FB1H102K ,76 1000PF E: Scandinavia & Europe K: USA

P: Canada W:Europe U: PX(Far East, Hawaii) T: England M: Other Areas

UE : AAFES(Europe) X: Australia

TM-241A: K, P, M, M2

4

4

ال

ų.

Q

Page 15

PARTS LIST

Parts without Parts No. are not supplied.

* New Parts

Les articles non mentionnes dans le Parts No. ne sont pas fournis. Telle ohne Parts No, werden nicht gellefert

Ref. No. Address New Parts No. Description Desti- Re-
参照番号 位置新 部品香号 部品名/規 t 向 marks
儒考
C80
C81
C82
C83
C84
CK73FB1H102K
CC73FCH1H220J
CK73FB1H103K
CE04EW1A470M
CK73FB1H103K
CHIP C 1000PF
CHIP C 22PF
CHIP C 0.010UF
ELECTRO 47UF
CHIP C 0.010UF
K
J
K
10WV
K
C85
C86
C87 ,88
C89 -92
C93
CE04EW1A221M
CE04EW1C100M
CK73FB1H103K
CK73FB1H102K
CK73FB1H102K
CK73FB1H103K
ELECTRØ 220UF
ELECTRØ 10UF
CHIP C 0.010UF
CHIP C 1000PF
CHIP C 0.010UF
10WV
16WV
K
K
K
C94
C95 ,96
C97
C99
C100
CE04EW1A470M
CK73FB1H103K
CE04EW1C102M
CK73FB1H102K
CK73FB1H102K
CK73EF1C105Z
ELECTRO 47UF
CHIP C 0.010UF
ELECTRO 1000UF
CHIP C 1000PF
CHIP C 1.0UF
10WV
K
16WV
K
Z
C101
C102
C104
C105
C106
CK73FB1H102K
CE04EW1C100M
CC73FCH1H150J
CK73FB1H102K
CC73FCH1H220J
CHIP C 1000PF
ELECTRØ 10UF
CHIP C 15PF
CHIP C 1000PF
CHIP C 22PF
K
16WV
J
K
J
C107
C108
C109
C110
C111-113
CK45B2H102K
CM73F2H330J
CC73FCH1H0R5C
CC73FCH1H020C
CK73FB1H102K
CERAMIC 1000PF
CHIP C 33PF
CHIP C 0.5PF
CHIP C 2.0PF
CHIP C 1000PF
K
J
C
C
K
C114
C115
C116
C117
C118
CC45SL2H560J
CC45SL2H470J
CC73FCH1H0R5C
CC73FCH1H020C
CM73F2H270J
CERAMIC 56PF
CERAMIC 47PF
CHIP C 0.5PF
CHIP C 2.0PF
CHIP C 27PF
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C119
C120
C121
C122
C122
C123
CK73FB1H102K
C92-0511-05
CK73EF1C1052
CK73FB1H102K
CK73EF1C1052
CHIP C 1000PF
CHIP TAN 0.15UF
CHIP C 1.0UF
CHIP C 1000PF
CHIP C 1.0UF
K
35WV
Z
K
Z
C125
C126
C127
C201
C202
CM73F2H060D
CC73FSL1H101J
CK73FB1H332K
CK73FB1H102K
CK73FB1H102K
CK73FB1H103K
CHIP C 6.0PF
CHIP C 100PF
CHIP C 3300PF
CHIP C 1000PF
CHIP C 1000PF
CHIP C 0.010UF
D
J
K
K
K
C203
C204
C205
C206
C207
CK73FB1H102K
CK73FB1H103K
CE04NW0J221M
CK73FB1E223K
CK73FB1H102K
CHIP C 1000PF CHIP C 0.010UF ELECTRØ 220UF CHIP C 0.022UF CHIP C 1000PF K
K
6.3WV
K
K
C208,209
C210,211
C212-214
C215-217
C219,220
CC73FCH1H330J
CK73FB1H103K
CC73FSL1H101J
CK73FB1H102K
CK73FB1H102K
CK73FB1H103K
CHIP C 33PF
CHIP C 0.010UF
CHIP C 100PF
CHIP C 100PF
CHIP C 1000PF
CHIP C 0.010UF
J
K
J
K
K
TC1 005-0349-05 TRIMMING 10PF
CN1
CN2
CN3 ,4
E40-3237-05
E40-5182-05
E40-5202-05
PIN CONNECTOR(INT.SP)
PIN CONNECTOR(DRU)
PIN CONNECTOR(TR)

E: Scandinavia & Europe K: USA P: Canada W:Europe

TM-241A: K, P, M, M2 TM-241E: E, E2

UE : AAFES(Europe) X: Australia

U: PX(Far East, Hawaii) T: England M: Other Areas

Page 16

* New Parts

PARTS LIST

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis,

Telle ohne Parts No. werden nicht geliefert.

TX-RX UNIT (X57-369X-XX) Ref. No. Address New Parts No. Desti- Re-Description 参照番号 位 T 部品番号 部品名/規格 向備考 新 E40-5183-05 PIN CONNECTOR(DTM) CN201,202 PIN CONNECTOR(CONT) PIN CONNECTOR(DRU) PIN CONNECTOR(DRU) PIN CONNECTOR EXT SP JACK MIC RECEPTACLE E11-0425-05 E06-0860-05 TEST TERMINAL FINISHED WIRE SET(HET) CONNECTING WIRE(CTCSS) E33-1871-15 FINISHED WIRE SET COLLAR CERAMIC DISCRI(CDBM455C16) CERAMIC FILTER(CFWM455F) -4 L34-4080-05 COIL 17 L40-1001-48 SMALL FIXED INDUCTOR(100H) L34-1239-05 L34-0895-05 COIL COIL L34-0499-05 COIL SMALL FIXED INDUCTOR(3.30H) COIL CRYSTAL RESONATOR(10.245MHz) L77-0946-15 L77-1405-05 CRYSTAL RESONATOR(12.8MHz) X201 L77-1397-05 CRYSTAL RESONATOR(4.194304MHz) CRYSTAL FILTER(10.7MHz) L71-0228-05 6.8K 1/10W KP 1/10W 1/10W RK73FB2A101J 100 1/10W 1/10W 10K 1.0K 1/10W 1/10W O OHM 1/10W 1/10₩ 1/10₩ RK73FB2A101J 100 1/10W 10K 1/10W

E: Scandinavia & Europe K: USA P: Canada W:Europe

TM-241A: K, P, M, M2 TM-241E: E, E2

الليد

الخب

الغي

di)

÷

4

-

U: PX(Far East, Hawaii) T: England M: Other Areas UE : AAFES(Europe) X: Australia

Page 17

PARTS LIST

Parts without Parts No. are not supplied.

* New Parts

Ref. No.

参照番号

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

RK73E

Telle ohne Parts No. werden nicht gellefe Address New

位置 新

rt. T (X57-369X-XX
rts No.
品 書 号
Description
部 品 名/規
Desti-
nation
仕 向
Re-
marks
備考
2A103J CHIP R 10K J 1/10W 1000
2A681J CHIP R 680 J 1/10W KP
2A153J CHIP R 15K J 1/10W 100
2A274J CHIP R 270K J 1/10W KP
2A332J CHIP R 3.3K J 1/10W KP
2A102J CHIP R 1.0% J 1/10W KP
2A102J CHIP R 1.OK J 1/10W
2A334J CHIP R 330K J 1/10W
2A331J CHIP R 330 3 1/10W
743311 CHIP P 330 T 1/100
Sur II 2.20 11 104 04
R33
R35 ,36
R37
R38
R40
RK73FB2A102J
RK73FB2A102J
RK73FB2A334J
RK73FB2A331J
RK73FB2A331J
RK73FB2A331J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1.0K
1.0K
330K
330
330
1111 1/10W
1/10W
1/10W
1/10W
1/10W
ΚP
R43
R44
R45
R46
R47
R92-1220-05
RK73FB2A101J
R92-0670-05
RK73FB2A102J
RK73FB2A473J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1
100
0 0HM
1.0K
47K
1
1
1
1/10W
1/10W
1/10W
R48
R49
R50
R51
R52
RK73FB2A333J
RK73FB2A473J
RK73FB2A473J
RK73FB2A223J
RK73FB2A472J
RK73FB2A102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
33K
47K
22K
4.7K
1.0K
1
1
1
1
1/10W
1/10W
1/10W
1/10W
1/10W
R53
R54
R55
R56 -58
R59
RK73FB2A334J
RK73FB2A223J
RK73FB2A182J
RK73FB2A182J
RK73FB2A103J
RK73FB2A182J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
330K
22K
1.8K
10K
1.8K
1
1
1
1
1
1
1/10W
1/10W
1/10W
1/10W
1/10W
R6D
R61
R62
R63
R63
RK73FB2A223J
RK73FB2A473J
R92-0670-05
RK73FB2A102J
RK73FB2A332J
CH1P R
CH1P R
CH1P R
CH1P R
CH1P R
CH1P R
22K
47K
0 0HM
1.0K
3.3K
1
1
1
1/10W
1/10W
1/10W
1/10W
EE2
KPMM2
R64
R64
R65 ,66
R67
R68
RK73FB2A392J
RK73FB2A563J
R92-0670-05
RK73FB2A220J
R92-0670-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
3.9K
56K
0 0HM
22
0 0HM
J
J
1/10W
1/10W
1/10W
KPMM2
EE2
R69
R70 ,71
R72
R73
R74
RK73FB2A184J
RK73FB2A103J
R92-0670-05
RK73FB2A223J
R92-0670-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
180K
10K
0 0HM
22K
0 0HM
J
J
1/10W
1/10W
1/10W
875 -78
879
880
881
882
RK73FB2A472J
RK73FB2A105J
RK73FB2A104J
RK73FB2A404J
RK73FB2A471J
RK73FB2A220J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
1.0M
100K
470
22
1000 1/10W
1/10W
1/10W
1/10W
1/10W
R84
R85
R86
R87
R88 ,89
RK73FB2A122J
RK73FB2A220J
RK73FB2A223J
RK73FB2A103J
RK73FB2A101J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1.2K
22
22K
10K
100
1111 1/10W
1/10W
1/10W
1/10W
1/10W
R90
R91
R92
R94
R95
RK73FB2A102J
RK73FB2A470J
RK73FB2A104J
RK73FB2A220J
RK73FB2A472J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1.0K
47
100K
22
4.7K
L
L
L
L
L
L
1/10W
1/10W
1/10W
1/10W
1/10W

E: Scandinavia & Europe K: USA

P: Canada W:Europe

TM-241A: K, P, M, M2 TM-241E: E, E2

U: PX(Far East, Hawaii) T: England M: Other Areas UE : AAFES(Europe) X: Australia

Page 18

* New Parts

PARTS LIST

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Telle ohne Parts No. werden nicht gellefert.

TX-RX UNIT (X57-369X-XX) Description Desti- Re-Ref. No. Address New Parts No. nation marks 向備考 参照番号 1 新 部品套号 部品名/規格 1/10₩ RK73FB2A103J 0 OHM CARBON 1/2W 22K 270K 1/10W RK73FB2A103J 1/10W 1/8W FIXED RESISTOR(18 OHM) FIXED RESISTOR(4.7 QHM) CHIP R 4.7K J 1/100 10K 1/10W 4.7K 1/10W O DHM 1/10W R231,232 R233 WOI'S 1/100 R236,237 RK73FB2A102J O OHM RK73FB2A105J MULT1-COMP 18 100K J 1/8W TRIM POT. TRIM POT. vR201 TRIMMING POT. (10K)

E: Scandinavia & Europe K: USA

U: PX(Far East, Hawaii) T: England M: Other Areas

P: Canada W:Europe

TM-241A: K, P, M, M2

اللي

A.

-11

- 44

U.

UE : AAFES(Europe) X: Australia

Page 19

TM-241A/E

PARTS LIST

Parts without Parts No. are not supplied.

* New Parts

Les articles non mentionnes dans le Parts No. ne sont pas fournis. Telle ohne Parts No. werden nicht gellefert

ene onne Parts No. werden nicht geliefert.

Ref. No. Add Parts Parts No. Description Desti-
nation mark
血 新 節痛膏考 郡 岳 名 / 規 格 仕向備考
5201
5202-211
S40-2458-05
S40-1086-05
POTENTIOMETER(SOKB)
PUSH SWITCH(POWER)
TACT SWITCH
D1
D2 -6
D7
D8 ,9
D10
DAN235K
15V164
LFB01
1SS184
DAN235K
D10DE
D10DE
D10DE
D10DE
D10DE
D10DE
ΚP
D11
D12
D13
D14 ,15
D16
1SS181
MI407
MI308
1SS226
DSA3A1
D10DE
D10DE
D10DE
D10DE
D10DE
D10DE
D202
D203
D204
D205
D206
02CZ9.1(Y)
1SS184
1SS181
1SS184
1SS184
1SS184
CHIP ZENER DI@DE
DI@DE
DI@DE
DI@DE
DI@DE
KPMEM2
0207
0209
0210
0211
0212
1SS184
MA141A
MA141A
MA141A
1SS226
DIODE
CHIP DIODE
CHIP DIODE
CHIP DIODE
DIODE
MM2882
MM2882
882
0213
0214
0215
0216
0217
LFB01
02CZ3.9(Z)
02CZ3.0(Z)
B30-0852-05
1SS184
DIODE
CHIP ZENER DIODE
CHIP ZENER DIODE
LED(LOW)
DIODE
IC1
IC2
IC3
IC4
IC5
KCD04
TA7787AF
UPC1241H
KCC02
TC9174F
HIC(FM IF)
IC(FM/AM IF/3V)
IC(AF PA)
HIC(EL,VQL)
IC(CMQS I/Q)
KP
106
107
108
109
10201
* NJM78LO5UA
LA5010M
KCB05
MC7808CT
75116GF-728-3BE
IC(VOLTAGE REGULATOR/ +5V)
IC(LOW SATURATION REGULATOR)
HIC(DRIVE)
IC(VOLTAGE REGULATORS/ +8V)
IC(CPU)
C202
21
22
23
24
NJM78L06UA
3SK184(S)
DTA114YK
DTC123JK
3SK131(V12)
IC(VOLTAGE REGULATOR/ +6V)
FET
DIGITAL TRANSISTOR
DIGITAL TRANSISTOR
FET
КР
К Р
25
26
27
28
29
2SC2714(Y)
2SK208(Y)
DTC143EK
2SC2712(Y)
FMG2
TRANSISTOR
FET
DIGITAL TRANSISTOR
TRANSISTOR
TRANSISTOR
KP
KP
KP
210
212
213 ,14
215
216 -18
2SC2712(Y)
2SD1757K
2SB1119S
DTC144WK
2SC2712(Y)
TRANSISTOR
TRANSISTOR
TRANSISTOR
DIGITAL TRANSISTOR
TRANSISTOR

E: Scandinavia & Europe K: USA

P: Canada W:Europe

U: PX(Far East, Hawaii) T: England M: Other Areas UE : AAFES(Europe) X: Australia

TM-241A: K, P, M, M2 TM-241E: E, E2

Page 20

× New Parts

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis. Telle ohne Parts No. werden nicht geliefert.

TX-RX UNIT (X57-369X-XX) PLL UNIT (X58-3470-00)

Ref. No.
參照番号
Addres
位 I
s New
Parts
Parts No.
部品番号
Description
品 名 / 規
Desti-
nation
仕 向
Re-
marks
備考
Q19
Q20
Q21
Q22
Q22
Q23,24
2SD1757K
2SC2712(Y)
2SK208(Y)
2SC2714(Y)
DTC124EK
TRANSISTOR
TRANSISTOR
FET
TRANSISTOR
DIGITAL TRA
NSISTOR
Q25
Q26
Q27
Q28
Q201-204
2SD1406(Y)
2SB1302S
2SC2712(Y)
2SJ106(GR)
2SA1519
TRANSISTOR
TRANSISTOR
TRANSISTOR
FET
TRANSISTOR
Q205
Q206-208
Q209,210
Q211
Q212
2SD1682(R,S)
2SC2712(Y)
DTC114EK
DTD143EK
FMG2
TRANSISTOR
TRANSISTOR
DIGITAL TRA
DIGITAL TRA
TRANSISTOR
NSISTOR
NSISTOR
S212 W02-0388-05 ROTARY ENCO DER
X58-3470-00
X59-3130-00
X59-3610-00
SUB UNIT(PL
MODULE UNIT
MODULE UNIT
L)
(APC)
(MIC AMP)
PLL UNIT (X 58-3470-00)
C1
C2
C3
C4 ,5
C6
CC73FCH1H220J
CK73FB1H102K
CC73FCH1H020C
CK73FB1H472K
CC73FCH1H010C
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
22PF
1000PF
2.0PF
4700PF
1PF
с кс
г
C7 -9
C10
C11
C51
C52
CK73FB1H102K
CK73FB1H472K
CK73FB1H102K
CC73FCH1H100D
CK73FB1H102K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
1000PF
4700PF
1000PF
10PF
1000PF
K
K
D
K
C53
C54
C55
C56
C101
CC73FCH1H100D
CK73FB1H102K
CK73EB1H223K
CK73FB1E393K
CK73FB1E393K
CK73EB1H223K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
10PF
1000PF
0.022UF
0.039UF
0.022UF
D
K
K
K
C102
C102,103
C104
C105
C106
CK73EB1H223K
C92-0009-05
CK73FB1H102K
C92-0003-05
CK73EB1H223K
CHIP C
CHIP TAN
CHIP C
CHIP TAN
CHIP C
0.022UF
4.7UF
1000PF
0.47UF
0.022UF
K
10WV
K
25WV
K
C107
C108
C109,110
CC73FCH1H100D
CC73FCH1H220J
CK73FB1H102K
CHIP C
CHIP C
CHIP C
10PF
22PF
1000PF
N
D
D
CN1
CN2
CN3
E40-0311-05
E40-0411-05
E40-5201-05
PIN CONNECT
PIN CONNECT
PIN CONNECT
0R(3P)
0R(4P)
0R(7P)
-
F11-1122-14 SHIELDING C OVER
L1
L2 -4
L5
L51
L40-1581-80
L40-3391-19
L34-2336-05
L40-3392-81
SMALL FIXED
SMALL FIXED
COIL
SMALL FIXED
INDUCTOR
INDUCTOR
INDUCTOR
(150NH)
(3.3UH)
(3.3UH)
RK73FB2A392J CHIP R 3.9K J 1/10W

PARTS LIST

E: Scandinavia & Europe K: USA P: Canada W:Europe

TM-

TM-241A: K, P, M, M2 TM-241E: E, E2

U: PX(Far East, Hawaii) T: England M: Other Areas UE: AAFES(Europe) X: Australia

Page 21

TM-241A/E

PARTS LIST

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis. Telle ohne Parts No. werden nicht gellefert.

PLL UNIT (X58-3470-00) APC UNIT (X59-3130-00) MIC AMP UNIT (X59-3610-00)

Ref. No. Address New Parts No. Description Desti- Re-
参照番号 位置 部品香号 品名/規 nation
仕 向
marks
備考
R1
R2
R3
R4
R5
RK73FB2A472J
RK73FB2A561J
RK73FB2A101J
RK73FB2A121J
RK73FB2A470J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
560
100
120
47
ננננ 1/10W
1/10W
1/10W
1/10W
1/10W
R6 ,7
R8
R9
R10
R51
R92-0670-05
RK73FB2A101J
RK73FB2A470J
RK73FB2A103J
RK73FB2A103J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
0 0HM
100
47
10K
10K
L 1/10W
1/10W
1/10W
1/10W
R52
R53
R54
R55
R101
RK73FB2A223J
RK73FB2A221J
RK73FB2A472J
RK73FB2A473J
RK73FB2A473J
RK73FB2A152J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
22K
220
4.7K
47K
1.5K
1111 1/10W
1/10W
1/10W
1/10W
1/10W
R102
R103
R104
R105
R106
R92-0670-05
RK73FB2A222J
R92-0670-05
RK73FB2A222J
RK73FB2A392J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
0 0HM
2,2K
0 0HM
2,2K
3,9K
L L 1/10W
1/10W
1/10W
R107-111
R112
R113
R114
RK73FB2A473J
RK73FB2A223J
RK73FB2A472J
R92-0670-05
CHIP R
CHIP R
CHIP R
CHIP R
47K
22K
4.7K
0 0HM
J
J
J
1/10W
1/10W
1/10W
D1 ,2
IC51
Q1
Q2
Q51
1T33C
M54959FP
2SC2714(Y)
2SK582
2SC2714(Y)
IC(FREQ SY
TRANSISTOR
FET
TRANSISTOR
NTHESIZER F LL)
952
953
9101,102
DTC144EK
2SC2712(Y)
2SC3324(B)
DIGITAL TRA
TRANSISTOR
TRANSISTOR
ANSISTOR
÷ APC UN IIT (X59-3130- 00)
C1
C2
C3
C4
C5
CK73FB1H102K
C92-0501-05
CK73FB1H472K
CK73FB1H102K
CK73FB1H472K
CHIP C
CHIP-TAN
CHIP C
CHIP C
CHIP C
1000PF
1.5UF
4700PF
1000PF
4700PF
KOXXX 3MA.
C6 CK73FB1H102K CH1P C 1000PF к
E23-0471-05 TERMINAL
R1
R2
R3
R4 ,5
R6
RD41FB2B222J
RD41FB2B102J
RD41FB2B152J
RD41FB2B153J
RD41FB2B103J
RD41FB2B122J
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
2.2K
1K
1.5K
10K
1.2K
JJJJJ 1/8W
1/8W
1/8W
1/8W
1/8W
Q1 ,2
Q3
FMW1
25A1162(Y)
TRANSISTOR
MIC AMP UNIT (X59-36 10-00) -
C1
C2
C3
C4
C5
CK73FF1E104Z
CK73GB1H102K
CK73FB1E333K
CC73GCH1H270J
C92-0004-05
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
CHIP TAN
0.1UF
1000PF
0.033UF
27PF
1.0UF
Z,
K
K
J
16
WV

U: PX(Far East, Hawaii) T: England M: Other Areas

UE : AAFES(Europe) X: Australia

Page 22

* New Parts

PARTS LIST

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Telle ohne Parts No. werden nicht geliefert.

MIC AMP UNIT (X59-3610-00) Ref. No. Address New Parts No. Description Desti- Renation mark 参照番号 位置 部品番号 向 備考 新 部品名/規格 仕 CK73FB1E333K 0.033UF 680PF 3300PF 82PF CK73GB1H102K E23-0471-05 TERMINAL RK73GB1J223J CHIP R 1/16W RK73GB1J561J 560 RK73GB1J470J RK73GB1J561J 560 0 OHM 390K 220K 180K RK73GB1J333J RK73FB2A473J 1/10W R12 R13 -15 1/16W 1/16W IC1 Q1 NJM4558M IC(OP AMP X2) TRANSISTOR E: Scandinavia & Europe K: USA P: Canada W:Europe TM-241A: K, P, M, M2 TM-241E: E, E2 U: PX(Far East, Hawaii) T: England M: Other Areas

4

4

-

UE : AAFES(Europe) X: Australia

Page 23

Parts with the exploded numbers larger than 700 are not supplied.

Page 24

PACKING

افي

ä,

Page 25

TM-241A/E

ADJUSTMENT

REQUIRED TEST EQUIPMENT

  • 1. DC V.M and Tester
  • 1) High input impedance 2. RF VTVM (RF V.M)
    • Input impedance : 1MΩ min., 2pF max. Voltage range : F.S = 10mV to 300V Frequency range : Up to 450MHz
  • Frequency Counter (f. counter) Input sensitivity : Approx. 50mV Frequency range : Up to 450MHz
  • DC Power Supply Voltage : 10V to 17V, variable Current: 11A min.
  • 5. Power Meter 1) Measurement range: Approx. 60W, 3W, 1W 2) Input impedance : 50Ω 3) Frequency range : 450MHz
  • 6. AF VTVM (AF V.M)
    • 1) Input impedance : 1MΩ min.
      • 2) Voltage range : F.S = 1mV to 30V3) Frequency range : 50Hz to 10kHz
  • AF Generator (AG)
    • 1) Output frequency : 100Hz to 10kHz 2) Output voltage : 0.5mV to 1V
  • 8. Linear Detector
    • 1) Frequency range : 450MHz
  • 9. Spectrum Analyzer 1) Frequency range : 450MHz
  • 10. Directional Coupler
  • 11. Oscilloscope
    • High sensitivity oscilloscope with horizontal input terminal
  • 12. SSG
    • 1) Frequency range : 144MHz band
    • 2) Modulation: AM and FM MOD.
    • 3) Output level : 0.1µV to 100mV.
  • 13. Dummy Load
    • 1) 8Ω, 5W (approx.)
  • 14. Noise Generator
    • Must generate ignition-like noise containing harmonics beyond 450MHz.

  • 15. Sweep Generator
  • 1) Sweep range : 144MHz bands
  • 16. Tracking Generator

PREPARATION

1) Unless otherwise specified, knobs and switches should be set as follows Table 7 .

POWER SW ON CALL OFF
AF VOL VR MIN SHIFT/AL OFF
SQL VOL VR MIN TONE/T. ALT OFF
VFO VFO REV/STEP OFF
MR OFF DR/DT OFF

Fig. 13 MIC terminals (view from front panel side)

  • Use an insulated adjusting rod to adjust trimmers and coils.
  • To prevent damaging SSG, never set the stand by switch to SEND while adjusting the receiver section.
  • Be sure to turn the power switch OFF, before connecting the power cable to a power source.
  • Meter and display section should be set as follows Fig. 14.

Fig. 14

Page 26

ADJUSTMENT

COMMON SECTION ADJUSTMENT

1. The second second 1. T. N. 202 Mea sureme ent Adj ustment A STREET STREET, STREE
Item Condition Test-
equipment
Unit Terminal Unit Parts Method Specifications/Remarks
1, Setting 1) Source voltage : DC 13.8V
POWER SW : OFF
VOL VR : Full counter-clock-
wise (CCW)
SQL VR : CCW
TX-RX unit VR3, 4 : CCW
VR1 : Center
2. Reset 1) Turn POWER SW ON while
holding down MR/M.
Display 144.000
3. PLL 1) RX VCO
FREQ. : 144.975 E,E 2
FREQ. : 146.000
K,P,M,M2
Receive.
DVM
Dummy
TX-RX
Rear
panel
TP2
ANT
Check 1.7 ~ 2.4V
2) FREQ. : 136.000
K,P,M,M2
Receive.
1.0V or more.
3) TX VCO
FREQ. : 144.975 E,E 2
FREQ. : 146.000
K,P,M,M2
Transmit.
3.2 ~ 3.8V
4) FREQ. : 173.995 M2,E2
Transmit.
10V or less.
  1. Transmit
    frequency
    adjustment
1) FREQ. : 144.975 E,E 2
FREQ. : 146.000
K,P,M,M2
Transmit.
f.counter
Power
meter
Rear
panel
ANT TX-RX TC1 144.975MHz E,E 2
146.000MHz
K,P,M,M2
±100Hz

RECEIVER SECTION ADJUSTMENT

Mea sureme ent Adj ustment
Item Condition Test-
equipment
Unit Terminal Unit Parts Method Specifications/Remarks
1. BPF 1) FREQ. : 145.050 E,E 2
FREQ. : 146.040
K,P,M,M2
TX-RX unit VR1 : Center
Connect the SSG to ANT.
Connect the DC V.M to TP1,
SSG output : -113dBm (0.5µV)
SSG MOD : 1kHz
SSG DEV : 3kHz
DC V.M
SSG
TX-RX TP1 TX-RX L1~5 Repeat for MAX.
2. Distortion 1) FREQ. : 145.050 E,E 2
FREQ. : 146.040
K,P,M,M 2
SSG output:113dBm
(0.5μV)
SSG MOD : 1kHz
SSG DEV : 3kHz
Distortion
meter
Oscilloscope
Rear
panel
SP TX-RX L6 Repeat for MIN. Turn L6 core CCW until best
SINAD point obtained.
Page 27

ADJUSTMENT

Mea asurem ent Ad justment
Item Condition Test-
equipment
Unit Terminal Unit Parts Method Specifications/Remark
3. Receiving
sensitivity
1) FREQ. : 145.050 E,E 2
FREQ. : 146.040
K,P,M,M2
SSG output : -123dBm (0.16μV)
SSG MOD : 1kHz
SSG DEV : 3kHz
AF V.M
Oscilloscope
Rear
panel
SP TX-RX Check SINAD 12dB or more.
2) FREQ. : 144.040
K,P,M,M2
FREQ. : 144.050 E,E 2
3) FREQ. : 145.950 E,E 2
FREQ. : 147.940
K,P,M,M2
4. S-meter 1) FREQ. : 145.050 E,E 2
FREQ. : 146.040
K,P,M,M2
SSG output: -96dBm (3.6μV)
SSG MOD : 1kHz
SSG DEV : 3kHz
LCD
(S-meter)
TX-RX VR1 Adjust so that all the signal-strength segments go on, then the last segment goes off
2) SSG output:
—95 dBm (4µV)
Check All S-meter segments on.
3) SSG: OFF 1 - Check S-meter off.

TRANSMITTER SECTION ADJUSTMENT

Mea ent Adj ustment
ltem Condition Test-
equipment
Unit Terminal Unit Parts Method Specifications/Remarks
1-1. APC 1) FREQ. : 144.975 E,E 2
FREQ. : 146.000 K,P,M,M2
Power
meter
Ammeter
Rear
panel
ANT Check 57W or more.
Transmit. - ON AIR LED on.
2) FREQ. : 145.975 E,E 2
FREQ. : 147.995
K,P,M,M2
Transmit.
TX-RX VR4 54W ±1W, 11A or less.
3) FREQ. : 144.000
Transmit.
Check 49 ~ 59W
11A or less.
4) FREQ. : 144.975 E,E 2
FREQ. : 146.000
K,P,M,M2
Transmit.
Read RF meter All RF meter LEDs on.
1-2. MID
power
1) FREQ. : 144.975 E,E 2
FREQ. : 146.000
K,P,M,M2
LOW SW: PUSH
Transmit.
TX-RX VR5 12W
Read RF meter
±1W.
10 RF meter LEDs on.
1-3. LOW
power
1) FREQ. : 144.975 E,E 2
FREQ. : 146.000
K,P,M,M2
LOW SW: PUSH
Transmit.
Check
Read RF meter
3.0 ~ 8.0W
6 RF meter LEDs on.
Page 28

ADJUSTMENT

ألحي

÷.

Mea ent 1. Adj justment had a lot of the second
Item Condition Test-
equipment
Unit Terminal Unit Parts Method Specifications/Remarks
2. DEV. EV. 1) FREQ. : 144.975 E,E 2
FREQ. : 146.000 K,P,M,M2
AG: 1kHz, 28mV E,E 2
AG : 1kHz, 50mV K,P,M,M2
Transmit.
Rear
panel
ANT TX-RX VR3 ±4.4kHz
(Read higher abso-
lute value of + or –
value)
±200Hz
Check for detected waveform.
2) AG: 1kHz, 2.8mV E,E 2
AG: 1kHz, 5.0mV K,P,M,M2
Check ±2.2 ~ 3.6kHz
3) DTSS
AG: 1.6 kHz 175 mV
(CN5 INPUT)
Check ±2.5 kHz or more
3. Protection 1) FREQ. : 145.975 E,E 2
FREQ. : 147.995
K,P,M,M2
ANT : OPEN
Transmit.
Ammeter Check 11A or less.
4-1. TONE 1) FREQ. : 145.250
TONE : ON
Transmit.
Linear
detector
Oscilloscope
Rear
panel
ANT Check DEV. : ±0.5 ~ 1.0kHz
4-2. TONE 1) FREQ. : 144.975 E,E 2
Transmit.
Power
meter
TONE SW of MIC
: ON.
DEV. : ±2.5 ~ 5.0kHz

Adjustment Points (Top View)

Page 29

LCD ASS'Y (B38-0330-05) Component side view

Page 30

TM-241A/E circuit diagram

Page 31

Q1:2SC2714(Y) Q2:2SK582

PLL (X58-3470-00) (B/2) Component side view

PLL (X58-3470-00) (A/2) Foil side view

PLL (X58-3470-00) (A/2) Component side view

M54949FP

2SK582

Page 32

PC BOARD VIEW/CIRCUIT DIAGRAM

TM-241A/E

32

MIC AMP (X59-3610-00) MIC AMP (X59-3610-00)

Q1 : 25C4116(Y) IC1 : NJM4558M

APC (X59-3130-00) Component side view MIC AMP (X59-3610-00) Foil side view

Refer to the schematic diagram for the values of resistors and capacitors.

Page 33

TM-241A/E PC BOARD VIEWS

TX-RX UNIT (X57-369X-XX) Component side view 0-11: TM-241A (K,P) 0-21: TM-241A (M) 0-22: TM-241A (M2) 2-71: TM-241E (T,E) 2-72: TM-241E (E2)

IC1: KCD04 IC3: #PC1241H IC4: KCC02 IC5: TC9174F IC6: NJM78L05UA IC7: LA5010M IC8: KCB05 IC9: MC7808CT IC201: IC201 Q,21: 2SK208(Y) Q,10,16, ~18,20,27,206 ~ 208: 2SC2712(Y) Q9: FMG2 Q12,19: 2SD1757 (K) Q13,14: 2SB1119S Q15: DTC144WK Q23; D8,9,203: ISS184 D11,202: ISS181 D12: MI407 D13: MI308 D14,15: ISS226 D16: DSA3A1 D204,206,207,211: ISS187 D205: ISS193

Page 34

TX-RX UNIT (X57-3310-XX) Foil side view

0-11: TM-241A (K,P) 0-21: TM-241A (M) 0-22: TM-241A (M2) 2-71: TM-241E (T,E) 2-72: TM-241E (E2)

75116GF-728-3BE IC202 : NJM78L06UA IC301 : S-AV17 Q1 : 3SK184(S) Q4 : 3SK131(V12) Q5,22 : 2SC2714(Y) 4 : DTC124EK Q25 : 2SD1406 (Y) Q26 : 2SB1302S Q201~204 : 2SA1519 D209,210 : MA141A D212 : 02CZ7.5(X,Y)

Page 35

Page 36

Page 37

Page 38

Page 39

TM-241A/E :

TERMINAL FUNCTIONS

No. No. Name Terminal Function Connector
No.
Terminal
No.
Terminal
Name
Terminal Function
TX-F X UNIT (X57-369X-XX) (A/2) CN202 1 Е GND.
CN1 1 E GND - 2 В +13.8V.
0110 2 SP Speaker input. 3 PSW Power switch control output
(From CPU).
CN2 1 BZZ 4 SB Switched B
2 Е GND. 5 8C Common +8V
3 VI Voice memory input. 6 BZ Been output (From CPLI)
4 VO Voice memory output. 7 Δ2 Audio output
5 VOA Power supply for voice memory , 1.54
CN3 1 F GND 8 Δ1 Audia isput (to AF VOL).
2 NC a E CND
3 ES1 Shift register (ICE) on ship 10 TO GND.
Δ NC Sinic register (ICS) enable. 11 NAE Tone output (From IC203).
5 ED1 PLL coshie 10 IVIE MIC GND.
E CV PLL enable. 12 IVIIC Mic output (From mic jack).
7 DT FLL CIOCK. 13 E GND.
0 DET PLL data. CN203 1 CK Serial clock output (From CPU P21).
0 DEI CICSS detector output 2 DT Serial data output (From CPU P22).
10 RU Audio output. 3 VCK DRS unit connect check.
10 SC Squeich busy control output. 4 GND GND.
11 SQ Squeich output 5 D8 DRS unit data.
12 SM S-meter output. 6 D1 DRS unit data.
13 E GND. 7 D2 DRS unit data.
CN4 1 E GND. 8 D4 DRS unit data
2 В +13.8 V. CN204 1 DST
3 PSW Power switch control input. CIN204 2 EC Commission 1511
4 SB Switched B. 2 DV Common +5V.
5 8C Common +8V 3 DV DTMF signal detector.
6 BZ Beep input (To AF IC from CPLI) 4 VOB DRS unit VOB output.
7 A2 Audio input 5 VOA DRS unit VOA output.
(To electronic volume from AE VOL) 6 RD DRS unit RD output.
8 A1 / WR DRS unit WR output
9 F GND 8 ACL DRS unit RESET output. (ACL)
10 TO Tone input 9 STBY DRS unit STBY output.
11 ME MIC CND 10 OE DRS OE, DTSS EN
12 MIC Mic GND. CN205 1 DT LCD driver data output
12 E CND (TO MIC AMP unit). 2 CK LCD driver clock output
15 C GND. 3 CE LCD driver enable output
TX-R X UNIT (X57-369X-XX) (B/2) 4 C5 +5V.
N201 1 E GND. 5 E GND.
2 NC 6 FC Function control
З ES1 Shift register enable 7 NC Euloction Jame P
NC (From CPU IC201). 9 LAMP Lamn R
4 FDI 10/202 - CAID
C EPI FLL enable (From CPU IC201). VV201 1 GND GND.
0 CK PLL clock (From CPU IC201). 2 RD CTCSS unit voice de-modulation input,
/ DT PLL data (From CPU IC201). 3 C5 Common +5 V.
8 DET CTCSS detector output. 4 DET CTCSS unit tone matching input.
9 RD Audio input (CPU IC201). 5 CTC CTCSS unit clock output.
10 SC Squelch busy control input. 6 CTD CTCSS unit data output.
To CPU IC201) 7 CTS CTCSS unit enable output.
11 SQ Squelch input (To CPU IC201) 100
12 SM S S-meter input (To CPU IC201)
Page 40

TM-241A/E

BLOCK D

TM-241A/241E

Page 41

AGRAM

TM-241A/E

* K, P only

Page 42

LEVEL DIAGRAM

AG is set so that MIC input becomes 3kHz DEV at 1kHz M 2. Transmitting frequency : 145.06 MHz

Page 43

TM-241A/E DRU-1 (DIGITAL RECORDING UNIT)

DRU-1 CIRCUIT DESCRIPTION

1. Overview

The DRU-1 is a digital recording and playback unit designed to be installed inside the TM-241 A/E series. This unit has the following features:

  • Recording received audio (for output to the internal speaker) or transmit audio (microphone input)
  • Outputting recorded audio to the internal speaker or outputting recorded audio as modulating signals during transmission
  • Built-in lithium battery back-up for maintaining DRU-1 contents
  • DTSS and paging code reception.

2. Operations

Recording received audio (for output to the internal speaker)

A received signal from the VO pin is fed into pin 1 (0Y) of the multiplexer IC1 (TC4052BF). It is then fed into pin 59 (MIC IN) of IC3 (TC8830F) via pin 3 (Y). The signal is amplified approx. 26dB by a mic amplifier in IC3, and output via pin 60 (C1). The signal from pin 60 is fed into pin 63 (C2) and amplified approx. 20dB. The amplified signal is applied to pin 64 (MIC OUT) and pin 65 (ADI).

Recording transmit audio (microphone input)

Microphone input from the VI pin is amplified by Q5, and fed into pin 2 (2Y) of the multiplexer IC1 (TC4052BF). It is then supplied to IC3 (TC8830F) via pin 3 (Y) and recorded in the same way as in recording received sound.

DRU-1 DESCRIPTION OF COMPONENTS ACCESSORY UNIT (X42-3010-00)

Component Use/Function Description
IC1 Multiplexer See DRU-1 circuit description
IC2 DTMF decode
IC3 Audio recording and playback See DRU-1 semiconductor data
IC4~7 S-RAM
Q5 AF amplification Mic input amplification
Q6 AF amplification Playback sound amplification
D1 Reverse current prevention
D2 Reverse current prevention Back-up.
Outputting recorded audio to the internal speaker

D/A convertor output from pin 66 (DAO) of IC3 (TC8830F) is passed through a CR filter, and amplified by Q6. The amplified signal is then fed into pin 13 (X) of the multiplexer IC1 (TC4052BF), and output to the VO pin via pin 14 (1X).

Outputting recorded audio as modulating signals during transmission

When sound recorded in the DRU-1 is played during transmission, the same operations as written above in outputting recorded audio to the internal speaker occur. That is, D/A convertor output from pin 66 (DAO) of IC3 (TC8830F) is passed through a CR filter, amplified by Q6, and fed into pin 13 (X) of the multiplexer IC1 (TC4052BF). The sound, however, is output via pin 11 (3X).

VOA
(pin 10)
VOB
(pin 9)
On channel
Output to speaker н L 1X (pin 14)
Output during transmission н н 3X (pin 11)
Received audio recording L L OY (pin 1)
Transmit aidop recording L Н 2Y (pin 2)

Table 1 IC1 : TC4052BF operations

DTSS and paging code reception

The DTMF signal input from the VO pin is amplified by Q1 and input to pin 12 of DTMF decoder IC2 (LR4102N). When the DTMF signal is input to IC2, pin 20 (DV pin) is made high. A DTMF code is then output to pins 1 (D1), 24 (D2), 23 (D4), and 22 (D8) of IC2. The CPU can receive the DTMF signal by detecting the DTMF signal input from the DV pin and reading D1, D2, D3, and D4 data.

Page 44

DRU-1 (DIGITAL RECORDING UNIT)

2. DTMF DECODER: LR4102N (IC2)

Pin connection

• Pin description

Pin No. Name 1/0 Function Pin No. Name 1/0 Function
1 D1 Ø DTMF data output 13 GNDA - Analog GND
2 H/B 16 digit cord setting 14 OSCOUT 0 X-tal output
3 EN - T Output enable 15 OSC 1 X-tal input
4 GND - Digital GND (GND) 16 NC - NC
5 NC - NC 17 NC - NC
6 IN1633 Ĩ. Valid 1633 Hz (GND) 18 XEN 1 X-tal enable
7 Vap Power supply 19 ATB 0 NC
8 NC NC 20 DV 0 Data varied
9 S1 - Bypass (Connected to ground by a
0.01 µF capacitor.)
21 CLDV 1 Data varied clear
10 S2 - Bypass (Connected to ground by a
0.01 µF capacitor.)
22 D8 Q DTMF data output
71 NC - NC 23 D4 0 DTMF data output
12 ANALOG IN - I - DTMF signal input 24 D2 0 DTMF data output
Page 45

TM-241A/E

DRU-1 (DIGITAL RECORDING UNIT)

Block diagram

DRU-1 SEMICONDUCTOR DATA

1. Audio recording and playback : TC8830F (IC3)

Terminal function

Pin No. Pin name 1/0 Function Pin No. Pin name 1/0 Function
1 FIL OUT 0 Not used. 41 X OUT 0 512kHz oscillation circuit.
2 NC - Not connected. 42 256K 1 64K/256K RAM select,
3 TEST - Not used. "H" when 256K used.
4 D7 1/0 RAM data I/O. 43 R/W 0 RAM read/write output.
5 NC - Not connected. 44 ALE - Not used.
6 D6 1/0 RAM data I/O. 45 WR 1 Write pulse input.
7 NC - Not connected. 46 RD 1 Read pulse input.
8 D5 1/0 RAM data I/O. 47~50 PH3~PH0 - Not used.
9 NC - 1 Not connected. 51~54 P3~P0 1/0 Data bus.
10 D4 1/0 RAM data I/O. 55 EOS - Not used.
11,12 NC - Not connected. 56 ACL 1 Reset signal input.
13-16 D3~D0 1/0 RAM data I/O. 57 CPUM 1 "H" when CPU control enabled.
17~19 A14~A12 0 RAM address output. 58 Vref 0 Analog circuit reference voltage output.
20 VSS1 - GND. 59 MIC IN 1 Mic amp. 1 input.
21~26 A11~A6 0 RAM address output. 60 C1 0 Mic amp. 1 output.
27 VDD - Power supply. 61 VDD - Power supply.
28~33 A5~A0 0 RAM address output. 62 VSS2 - GND.
34 CE - Not used. 63 C2 T Mic amp. 2 input.
35~38 CE1~CE4 0 RAM chip enable. 64 MIC OUT 0 Mic amp. 2 output.
39 STBY 1 Minimum current standby when standby 65 ADI 1 Audio analysis circuit input.
1.1 - input is "H". 66 DAO 0 D/A convertor output.
40 X IN 1 512kHz oscillation circuit. 67 FIL IN 1 Not used.
Page 46

TM-241A/E DRU-1 (DIGITAL RECORDING UNIT) DRU-1 PARTS LIST

* New Parts Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis. Telle ohne Parts No. werden nicht geliefert.

Ref. No. Address New
Parts
Parts No. Desc ription Desti-
nation
Re-
marks
参照誉号 位置 部品養考 31 11 11 名/規 格 任 问 118-15
DRU-1
- 842-3317-04
850-8290-00
LABEL
INSTRUCTION MA
NUAL
G10-0666-04
G10-0679-04
G13-0913-04
NON-WOVEN FABR
NON-WOVEN FABR
FORMED PLATE
HC
HC
*** H01-8249-03
H03-2772-04
H21-0704-04
H25-0029-04
H25-0710-04
ITEM CARTON BO
NUTER PACKING
PROTECTION SHE
PROTECTION BAG
PROTECTION BAG
X
CASE
ET
NB7-2606-46 BRAZIER HEAD T APTITE SCREW
X42-3010-00 ACCESSORY UNIT
ACCESSORY UNIT (X42-3010- 00)
C1
C2
C3
C4 -6
C7
CK73FB1H103K
CK73FB1H102K
CK73FF1E154Z
CK73FF1E154Z
CK73FB1H103K
CK73EF1C105Z
CHIP C C
CHIP C D
CHIP C C
CHIP C C
CHIP C D
). 010UF K
1000PF K
). 15UF Z
). 010UF K
. 0UF Z
C8 -10
C11
C12
C13 +14
C15
CK73FB1H103K
CK73FF1E104Z
CK73FB1H103K
CK73FB1H102K
CK73FB1H102K
CK73FF1E104Z
CHIP C C
CHIP C C
CHIP C C
CHIP C I
CHIP C I
CHIP C C
0.010UF K
0.10UF Z
0.010UF K
0000PF K
0.10UF Z
C16
C17
C19
C20
C21 ,22
CK73FB1H103K
CK73FF1E104Z
CK73FB1H103K
CK73FB1H102K
CC73FB1H102K
CC73FSL1H101J
CHIP C C
CHIP C C
CHIP C C
CHIP C C
CHIP C C
D. DIOUF K
D. 10UF Z
D. 010UF K
1000PF K
1000PF J
C23
C24
C25
C26
C27
CK73FB1H103K
C92-0010-05
CK73EB1H104K
CK73FB1H103K
CC73FSL1H101J
CHIP C C
CHIP TAN C
CHIP C C
CHIP C C
CHIP C C
D.010UF K
5.8UF 6.3WV
0.10UF K
0.010UF K
100PF J
C28 CK73FF1E1D4Z CHIP C 1.10UF Z
EN1
CN2
CN3
W1
W2
**** E40-5207-05
E40-5206-05
E40-5181-05
E31-6005-05
E31-6006-05
PIN CONNECTOR
PIN CONNECTOR
PIN CONNECTOR
CONNECTING WI
CONNECTING WI
RE
RE
* E31-6007-05 CONNECTING WI RE
F20-0520-04
F20-0521-04
INSULATING BU ARD
ARD
X1
X2
* L77-1398-05
L78-0050-05
CRYSTAL RESON
RESONATOR
ATOR 3.579545MH
512KHZ
Z
R1
R2
R3
R4
R5
ľ RK 73F82A103J
RK 73F82A392J
RK 73F82A103J
RK 73F82A105J
RK 73F82A105J
RK 73F82A102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
10k .) 1/1
3.9k J 1/1
10k J 1/1
1.0M J 1/1
1.0k J 1/1

E Scandinavia & Europe K. USA P. Canada W:Europe

U: PX(Far East Hawaii) T England M. Other Areas

UE AAFES(Europe) X Australia

A indicates safety critical components

Page 47

DRU-1 (DIGITAL RECORDING UNIT) Parts without Parts No. are not supplied.

* New Parts

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Telle ohne Parts No. werden nicht gellefert.

Address New Parts No. D escription Desti- Re-
位置 部 品 폴 号 部品 名/規 nation
仕 向
mar x
備考
R92-0670-05
RK73FB2A223J
RK73FB2A102J
RK73FB2A105J
R92-0670-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
0 0HM
22K
1.0K
1.0M
0 0HM
J
J
1/10W
1/10W
1/10W
1
RK73FB2A223J
R92-D670-D5
RK73FB2A222J
RK73FB2A472J
RK73FB2A472J
RK73FB2A104J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
22K
0 0HM
2.2K
4.7K
100K
L
L
L
L
1/10W
1/10W
1/10W
1/10W
RK73FB2A105J
RK73FB2A103J
RK73FB2A105J
RK73FB2A562J
RK73FB2A562J
RK73FB2A104J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1. OM
10K
1. OM
5. 6K
100K
J 1/10W
1/10W
1/10W
1/10W
1/10W
RK73FB2A103J
RK73FB2A102J
RK73FB2A564J
RK73FB2A564J
RK73FB2A273J
RK73FB2A683J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
10K
1.0K
560K
27K
68K
L 1/10W
1/10W
1/10W
1/10W
1/10W
RK73FB2A105J
RK73FB2A222J
RK73FB2A224J
R92-0670-05
RK73FB2A220J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1.0M
2.2K
220K
0 0HM
22
J
J
J
1/10W
1/10W
1/10W
RK73FB2A394J CHIP R 390K J 1/10W
* * 1SS184
TC4052BF
LR41D2N
TC8830F
HM62256LFP-15T
DINDE
IC(4CH MPX/I
IC
IC
IC
IC
)E-MPX)
2SC2712(BL)
DTC144EK
2SC2712(BL)
TRANSISTOR
DIGITAL TRAN
TRANSISTOR
SISTOR
W07-D326-05 LITHIUM BAT TERY
Address
位 重
Address New
Parts
Address New
Parts Parts No. 位 正 第 第 8 3 9 位 正 第 第 9 8 3 9 位 正 第 第 9 位 正 第 第 9
Address
PartsNew
PartsParts No.D位11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
Address
bris New
parts Parts No. Description 11 11 15 16 17 18 16 17 18 15 16
Address Ner
Parts Parts No. Description 11 11 12 13 14 15 14 15 15 16 17 10 11 <
Address New
Parts No. Description #
Address New
Print Parts No. Description Desti-
mit R 11

U: PX(Far East, Hawaii) T-England M. Other Areas

UE: AAFESIEurope) X. Australia

Page 48

TM-241A/E dru-1 (digital recording unit)

DRU-1 PC BOARD VIEWS ACCESSORY UNIT (X42-3010-00) Component side view

IC1 : TC4052BF IC2 : LR4102N IC3 : TC8830F IC4~7 : HM62256LFP-15T Q5,6 : 2SC2712(BL) D1,2 : 1SS184

ACCESSORY UNIT (X42-3010-00) Foil side view

Page 49

DRU-1 SCHEMATIC DIAGRAM

(X42-3010-00) (A/2)

(X42-3010-00) (A/2)

ICI : TC4052BF Q1~3,5,6 : 2SC2712(BL)
IC 2 LR4102N 04 DTCI44EK
IC 3 : TC8830F D1.2 : 155184
IC 4~7 : HM62256LFP-15T
Page 50

Page 51

TM-241A/E :

DTU-2 (DTMF UNIT)

DTU-2 EXTERNAL VIEW

DTU-2 PARTS LIST

Re 5 No. New
Parts
Parts No. Description
C1 CK73FB1E104K Chip C 0.1 µF K
C2 CC73GCH1H100D Chip C 10 pF D
C3,4 CC73GCH1H330J Chip C 33 pF J
C5~8, 10 CK73GB1E103K Chip C 0.01 µF K
C13~16 CK73GL1E103K Chip C 0.01 uF K
C9 CK73GB1E822K Chip C 0.0082 uF K
C10 CK73GB1E322K Chip C 0.0033 uF K
C11 CC73GSL1H101J Chip C 100 pF J
E37-0033-05 Connecting cable (6P)
E40-5188-05 Pin ass'v socket (11P)
X1 L78-0061-05 CERAMIC RESONATOR
(3.58 MHz)
R1~14 RK73GB1JxxxJ Chip R
Q1 DTC114EU Digial transistor
Q2.3 2SC4116 (Y) Digital transistor
IC1 TP5088WM IC
IC2 LC7385M IC
IC3 BU4066BF IC
Page 52

TM-241A/E

DTU-2 (DTMF UNIT)

DTU-2 PC BOARD

Component side view

Foil side view

SCHEMATIC DIAGRAM

Page 53

MC-44DM/MC-44DME (MULTI FUNCTION MICROPHONE WITH AUTOPATCH)

MC-44DM/MC-44DME SCHEMATIC DIAGRAM

MC-44DM/MC-44DME PARTS LIST

Ref. No. New parts Parts No. Description
* A02-0898-18 Case (Front) DTMF м
A20-0899-18 Case (Front) DTMF (With TONE) W
A02-0901-08 Case (Rear) DTMF
* B50-8293-18 Instruction ma nual
E30-2149-08 Curl cord
G13-0933-08 Cushion
K29-3165-08 Knob PTT
K29-3167-08 Key top DTMF
K29-3168-18 Knob UP
1 K29-3169-18 Knob DOWN
SW2 S31-1422-08 Slide switch LOCK
SW1 S50-1431-08 Micro switch PTT
S7, 8 S59-1409-28 Switch Ass'y UP, DOWN
T91-0383-08 Microphone el ement (Condenser microphone)
Page 54

TM-241A/E MC-44 (MULTI FUNCTION MICROPHONE)

MC-44 SCHEMATIC DIAGRAM

MC-44 PARTS LIST

Ref. No. New parts Parts No. Description
A02-0896-18 Case (Front)
A02-0900-08 Case (Rear)
B50-8293-18 Instruction ma nual
E30-2149-08 Curl cord
G13-0933-08 Cushion
K29-3165-08 Knob PTT
K29-3168-18 Knob UP
K29-3169-18 Knob DOWN
K29-3170-08 Knob CALL, VFO, MR, PF
SW2 S31-1422-08 Slide switch LOCK
SW1 S50-1431-08 Micro switch PTT
S7, 8 ٠ S59-1409-28 Switch Ass'y UP, DOWN
T91-0383-08 Microphone el ement (Condenser microphone)
Page 55

MC-44E (MULTI FUNCTION MICROPHONE)

TM-241A/E

MC-44E SCHEMATIC DIAGRAM

MC-44E PARTS LIST

Ref. No. New
parts
Parts No. Description
A02-0897-18
A02-0900-08
Case (Front)
Case (Rear)
With TONE
B50-8293-18 Instruction ma nual
E30-2149-08 Curl cord
G13-0933-08 Cushion
K29-3165-08 Knob PTT
K29-3168-18 Knob UP
K29-3169-18 Knob DOWN
K29-3170-08 Knob 1750, VFO, MR, PF
SW2 S31-1422-08 Slide switch LOCK
SW1 S50-1431-08 Micro switch PTT
S7, 8 S59-1409-08 Switch Ass'y UP, DOWN
÷. T91-0383-08 Microphone el ement (Condenser microphone)
Page 56

TM-241A/E

TSU-6 (CTCSS UNIT)

TSU-6 EXTERNAL VIEW

TSU-6 REFERENCE DATA

TH-25's condition and MN4094BS (IC2) relationship
CTCSS TONE TX/RX MN4094BS terminal
switch switch Q5 06 01~4,7,8
OFF TX L н L
055 OFF RX L н L
OFF - TX L L See table 2
ON RX L H L
055 TX L L
ON OFF RX н L 1
TX L L See table 2
UN RX н L

Q1 ~ 4, 7, 8 Tone frequency setting

Q5 : TX/RX switch for MN6520 (IC1). "H" RX. "L" TX.

Q6 : Power switch for MN6520 (IC1). "H" : OFF, "L" ON.

Table 1

Tone frequency and MN6520 (IC1) relationship

TSU-6 PARTS LIST

Ref. No. New
Parts
Parts No. D escription
CTCSS UNIT (X5 2-3100-00 )
C1 CK73FB1H102K Chip C 1000pF к
C2 C92-0010-05 Tantal 6.8µF 6.3WV
C3 C92-0006-05 Tantal 3.3µF 4.0WV
C4, 5 1.1 CK73EB1E104K Chip C 0.1µF κ
C6 CK73EB1H223K Chip C 0.022µF к
C7 CK73EB1E104K Chip C 0.1µF к
C8,9 CC73FCH1H150J Chip C 15pF 1
C10 CK73FB1H102K Chip C 1000pF ĸ
C11 CK73EB1E104K Chip C 0.1µF к
C12 C92-0507-05 Chip tan. 4.7µF 6.3WV
C13 C92-0510-05 Chip tan. 3.3µF 4.0WV
E40-5121-05 Pin conne ctor (10P)
×1 L77-1313-05 X'tal resor hator 4.194 304MHz
R1-10 BK73FB2A000J Chip resist or
R12-14 RK73FB2A000J Chip resist or
VRI R12-3460-05 Trimming pot. 33kΩ 2
Q1 DTC144TK Digital tra nsistor
02 DTA114EK Digital tra nsistor
03 2SC2712(GR) Chip trans istor
IC1 MN6520 1C
1C2 MN4094BS IC

TSU-6 FINE ADJUSTMENT OF TONE FREQUENCY

The tone frequency can be fine adjusted with an interval of 0.5% step over the range of 0 to +1.5%. Ground the T1 (pin 10) and T2 (pin 9) of IC1 to obtain the desired frequency.

/ T1 T2
0% х ×
+0.5% 0 ×
+1.0% × 0
+1.5% 0 0

able 3

Tone 22 CE 64 20 0
frequency 56 55 54 53 52 51
(Hz) 01 1 02 02 00
67.0 - ui 42 43 04 47 00
71.0 L - L
71.9 L H н н L -
74,4 L. H H L H H
77.0 L н H L н L
79.7
02.5
L E C H L L H
82.5 L н H - L
85.4 L H L н H H
88.5 L н L н H L
91,5 L H L н L H
94.8 H н H L L H
100.0 H н н L L L
103.5 н н L н н н
107.2 н н L н н L
110.9 н н L н L н
114.8 н н L н L L
118.8 н н L L н н
123.0 н н L L н L
127.3 н н L L L н
131.8 н н L L L L
136.5 н L н н н н
141.3 н L н н н L
146.2 н L н н L н
151.4 н L н н L - L
156.7 н L н L н н
162.2 н L н L н L
167.9 н L н L L н
173.8 н L н L L L
179.9 н L L н н H
186.2 н L L н н L
192.8 н . L . L H L н
203.5 н L L H L L
210.7 н L L . L н н
218.1 н L L L н L
225.7 н L L L L Н
233.6 н L L L L L
241.8 E н н н н Н
250.3 L н н H н L
Page 57

TM-241A/E

TSU-6 (CTCSS UNIT)

Page 58

SPECIFICATIONS

General
General
Frequency range 136 to 174 MHz; TM-241A (M2), TM-241E (E 2 )
144 to 148 MHz; TM-241A (K, P, M)
144 to 146 MHz: TM-241E (E)
Mode F3E (FM)
Antenna impedance 50Q
Power requirements 13.8 V DC ±15% (11.7 to 15.8)
Ground Negative
Frequency stability Less than ±10ppm
Current drain
Transmit mode Less than 11A
Receiver mode with no signal Less than 0.6A
Operating temperature -20°C to +60°C (-4°F to +140°F)
Dimensions (W x H x D)
(Projection included)
140 x 40 x 160 mm (5-1/2" x 1-37/64" x 6-19/64")
140 × 40 × 172 mm (5-1/2" × 1-37/64" × 6-25/32
Weight 1.2kg (2.65lbs)
Transmitter
Output power*
HI
MID
LOW
Modulation
Spurious radiation
Maximum frequency deviation
Audio distortion (at 60% modulation)
Microphone impedance
50W Approx. 10 W Approx. 5W Reactance modulation Less than -60dB ±5kHz Less than 3% (300 to 3000Hz) 500 to 600Ω

Circuitry Double conversion superheterodyne Intermediate frequency (1st/2nd) 10.7MHz/455kHz Sensitivity (12dB SINAD) Less than 0.16µV Selectivity -6dB -60dB More than 12kHz Squelch sensitivity Less than 0.1µV Output (5% distortion) More than 2W across 8Ω loads External speaker impedance 8Ω

Notes ;

Receiver

1. Circuit and ratings are subject to change without notice due to advancements in technology.

2. * Recommended duty cycle : 1 minute Transmit, 3 minutes Reception.

KENWOOD CORPORATION

Shionogi Shibuya Building, 17-5, 2-chome Shibuya, Shibuya-ku, Tokyo 150, Japan

KENWOOD U.S.A. CORPORATION COMMUNICATIONS & TEST EQUIPMENT GROUP P.O. BOX 22745, 2201 East Dominguez St., Long Beach, CA 90801-5745, U.S.A. KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str. 15, 6056 Heusenstamm, West Germany KENWOOD ELECTRONICS BENELUX N.V. Mechelsesteenweg 418 B-1930 Zaventern, Belgium TRIO-KENWOOD FRANCE S.A. 13, Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS AUSTRALIA PTY. LTD. P.O. Box 504, 8 Figtree Drive, Australia Centre, Homebush, N.S.W. 2140, Australia KENWOOD & LEE ELECTRONICS, LTD. Wang Kee Building, 5th Floor, 34-37, Connaught Road, Central, Hong Kong KENWOOD ELECTRONICS CANADA INC. P.O. BOX 1075, 959 Gana Court, Mississauga, Ontario, Canada L4T 4C2

Page 59

Extending TM-241 frequency ranges

There are two methods of reconfiguring the TM-241. One is to cut a jumper wire ; the other is to replace chip diodes. (If both methods are used, cutting the jumper wire has priority.)

  • 1. Cutting a jumper wire
    • Turn the power off, remove the top of the radio, and cut the green wire on the left of the front panel. Tape the wire so that it cannot cantact other parts.

2 ) Frequency ranges after extension

Destination

к, Ρ TX : 142,000 ~ 151,995 MHz
Е RX/TX 136,000 ~ 173,995 MHz
М RX : 118,000 ~ 173,995 MHz ( FM )
TX : 136,000 ~ 135,995 MHz

1/6

Page 60

2. Replacing chip dioses

Frequencing can be changed by replacing the diodes for the destination set bits ( a0 - a4 ) as shown below.

Destination set bit
a4a3a2a1a0
Transmit frequency Receive frequency Initial Initial Initial autr STEP ( @: Initial value )
Destination - MIN MAX MIN MAX value AS SHIFT 5 10 15 20 12.5 25
00010 E1 144 146 144 146 144 ± 0.5 0 0 0 0 ٢ 0
00011 C1 136 174 136 174 144 ± 5.7 0 0 0 0 0 0
01000 E3 144 146 136 174 144 ± 0.6 0 0 0 0 0 0
01010 E2 136 174 136 174 144 ± 0.6 0 0 0 0 0 0
10010 M2 136 174 136 174 144 ± 0.6 0 0 0 0 0 0
10110 M1 144 148 144 148 144 ± 0.6 0 0 0 0 0 0
10111 К1 144 148 118 174 144 0 ± 0.6 ۲ 0 0 0 0 C
11110 КЗ 136 174 118 174 144 ± 0.6 0 0 0 0 0 0
11111 K2 142 152 118 174 144 0 ± 0.6 0 0 0 0 0 ţ.

0: With diode 1: Without diode

2 ) Changing parts

Printed circuit of X57-3690-00 ( CONT B/2 ) unit

Pattern cut when reconfiguring DRS transmission

Bit a4 a3 a2 al a0
Ref. D210 D206 D207 D208 D209
Part name MA141A 1SS184 1SS184 1SS184 MA141A

2/6

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