Abell A-80 User manual

A-80 UHF SERVICE MANUAL
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ABELL Industries Co. Ltd
A-80 UHF SERVICE MANUAL
V.1
Contents
GENERAL………………………………………………………………………………….1
REALIGNMENT……………………………………………………………………………4
DISASSEMEBLE FOR REPAIR…………………………………………………………6
CIRCUIT DESCRIPTION…………………………………………………………………7
PARTS LIST…………………………………………………………………………….....11
EXPLODED VIEW………………………………………………………………………..32
PACKING………………………………………………………………………………….36
ADJUSTMENT…………………………………………………….................................37
PC BOAD VIEW……………………………………………………..............................43
SCHEMATIC DIAGRAM…………………………………………………………………45
SPECIFICATIONS …………………………………………………………………….....50

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General
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced technicians familiar with similar types of
commercial grade communications equipment. It contains all required service information for the
equipment and is current as of the publication data. Changes which may occur after publication
are covered by either Service Bulletins or Manual Revisions. These are issued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment information, the full part identification number
should be included. This applies to all parts: components, kits, or chassis. If the part number is
not known, include the chassis or kit number of which it is a part, and a sufficient description of
the required component for proper identification.
PERSONAL SAFETY
The following precautions are recommended for personal safety：
DO NOT transmit until all RF connectors are verified secure and any open connectors are
properly terminated.
SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive
atmosphere.
This equipment should be serviced by a qualified technician only.
SERVICE
This radio is designed for easy servicing. Refer to the schematic diagrams, printed circuit
board views, and alignment procedures contained within.
MODEL CHANNEL NO. RF POWER OUTPUT
DH 16 4W
DL 16 4W

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Setting Acquainted
①PTT (Push-To-Talk) switch
Press this switch, then speak into the microphone to call a station. Release the switch to
receive.
②Monitor Key
Press and hold to monitor how busy the current channel is and to monitor signals being
received that don’t contain the matched QT/DQT code.
③Channel announcer
Press this switch to get current channel information.
④Channel selector
Rotate to select channels 1-16.
⑤LED indicator
Lights red while transmitting, green while receiving a signal. Flashes red when the battery
voltage is low while transmitting.
⑥Power switch/Volume control
Turn clockwise to switch the transceiver ON. Turn counterclockwise until a click sounds, to
switch the transceiver OFF. Rotate to adjust the volume level.

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REALIGNMENT
1 MODE
MODE FUNCTION
User Mode Use this mode for normal operation
PC Mode Use this mode, to make various settings by
means of the FPU through RS-232C port.
Manufacture Mode
Use this mode, to realign the various settings
through the RS-232C port during manufacture
work.
2 How to enter each mode
MODE PROCEDURE
USER MODE Power on
PC MODE Connect to the IBM PC compatible
machine and controlled by FPU
PC MODE
Preface
The transceiver is programmed by using a personal computer, programming interface and
programming software (ABELL transceiver programming software).
The programming software can be used with and IBM PC or compatible. Figure 1 shows the setup of
an IBM PC for programming.
Connection procedure
1．Connect A-80 to the PC with using the interface cable.
2．When data is transmitted from transceiver the red LED lights.
When data is received by transceiver the green LED lights.
3．Note：
·The data stored in the PC must match the Model Name when it is written into the EPROM. The
transceiver should be turn on until the software been run and the cable been connected.
·Do not press PTT key during data transmission or reception.
User Mode PC Mode Manufacture Mode

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·Interface cable description
(PC programming interface cable：Option)
The interface cable is required to connect A-80 to the PC. It has a circuit in their D-sub connection
(9-pin) cases that convert the RS-232C logic level to the transistor logic lever. The cable connects the
side panel jacks of the A-80 to the PC’S RS-232C serial port.
·Programming software description
The A-80 programming software allows user to program A-80 via a programming cable.
·Programming by PC
If data is transferred to the transceiver from the PC, the destination data (basic radio information) for
each set can be modified. Normally, it is not necessary to determined automatically when the frequency
range (frequency type) is set.
The values should be modified only if necessary.
Data can be programmed into the EEPROM in RS-232C format data via the SP MIC plug.
In this mode the PTT line operates as TXD and RXD data lines respectively.
USER MODE
1. Channel announcer：Press this switch to get current channel information.
2. Alert：Press this switch to send out Alert sound；
3. Wired clone：Connect sample radio A with radio B with a cloning cable provided by ABELL.
Turn on radio A, and then turn on radio B with [Monitor] being activated till the LED lights green. Press
[PTT] of radio B to start cloning. The LED of radio A flashes red, and radio B flashes green during
cloning. Radio B stop flashing, and LED of radio A lights red when wire cloning is completed.

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DISASSEMBLEY FOR REPAIR
Separating the case assembly from the chassis
1．Remove the knob①and the round nut②
2．Remove the two screws③。
3．Expand the right and left sides of the bottom of the case assembly, lift the chassis, and remove it from
the case assembly④.
4．Taking care not to cut the speaker lead⑤, open the chassis and case assembly.

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Separating the chassis from the unit
1．Remove the 11 screws⑥
2．Remove the solder from the antenna terminal using a soldering iron then lift the unit off⑦
3．Remove the two screws⑧and remove the antenna connector.
Note：When reassembly the unit to the chassis, be sure to solder the antenna terminal.
CIRCUIT DESCRIPTION
1. Frequency configuration
The receiver utilizes double conversion. The first IF is 45.05MHz and the Second IF is 450 KHz.
The first local oscillator signal is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the necessary frequency.
2．Receiver
The receiver utilizes double conversion, designed to operate in the frequency range DL: 400-430,
DH: 440-480MHz.
⑦

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1）Front-end RF amplifier
An incoming signal from the antenna is applied to an RF amplifier (Q314) after passing through
a transmit/receive switch circuit (D301 and D302 are off) and a band pass filter. After the signal is
amplified (Q314), the signal is filtered through a band pass filter (D301 and D302) to eliminate the
unwanted signal before it is passed to the first mixer.
The voltage of the varactor diodes on the band pass filters are controlled by the CPU (ICI) center
frequency.
2）First Mixer
The signal from the RF amplifier is heterodyned with the first local oscillator signal from the PLL
frequency synthesizer circuit at the first mixer (Q301) to create a 45.05MHz first intermediate
frequency (1st IF) signal. The first if signal is then fed through two monolithic crystals filters (XF300
and 301) to further remove spurious signals.
3）IF amplifier
The first IF signal is amplified by Q201, and then enters IC300. The signal is heterodyned again
with a second local oscillator signal within IC300 to create a 450MHz second IF signal. The second IF
signal is then fed through a 450MHz ceramic filter (CF300) to further eliminate unwanted signals
before it is amplified and FM detected in IC300.
4）AFAmplifier
The recovered AF signal obtained from IC300 is amplified by IC401D, filtered by the high-pass
filter IC401D to eliminate signals under 300Hz. And de-emphasized by Q405 and Q406. The processed
AF signal passes through an AF volume control and is amplified to a sufficient level to drive a loud
speaker by an AF power amplifier (IC2).
5）Squelch
Part of the AF signal from IC300 enters IC300 again, and the noise component is amplified and
rectified by a filter and an amplifier to produce a DC voltage corresponding to the noise level.
The DC signal from the FM IC goes to the analog port of the microprocessor(IC1).IC1 determines
whether to output sounds from the speaker by checking whether the input voltage is higher or lower
than the preset value.
To output sounds from the speaker, IC1 sends a high signal to the AFCC lines and turns IC2 on
through Q4, Q5, Q404, Q7 and Q6.
6）Receive signaling
300Hz and higher audio frequencies of the output signal from IF IC are cut by a low-pass filter
(IC404C and IC404B). The resulting signal enters the microprocessor (IC1). IC1 determines whether
the QT or DQT matches the preset value, and controls the CPU and AFCC and the speaker output
sounds according to the squelch results.
3．PLL frequency synthesizer

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The PLL circuit generates the first local oscillator signal for reception and the RF signal for
transmission.
1）PLL
The frequency step of the PLL circuit is 2.5 or 3.125 KHz. A 12.8MHz reference oscillator signal is
divided at IC100 by a fixed counter to produce the 2.5 or 3.125 KHz reference frequency. The voltage
controlled oscillator (VCO) output signal is buffer amplified by Q102, then divided in IC100 by a
dual-module programmable counter. The divided signal is compared in phase with the 2.5 or 3.125 kHz
reference signal in the phase comparator in IC100. The output signal from the phase comparator is
filtered through a low-pass filter and passed to the VCO to control the oscillator frequency.
2）VCO
The operating frequency is generated by Q101 in transmit mode and Q104 in receive mode. The
oscillator frequency is controlled by applying the VCO control voltage, to the varactor diodes (D102
and D103 in receive mode and D100 and D101 in transmit mode). The RX pin is set low in receive
mode, and TX pin is set low in transmit mode. The outputs from Q104 and Q101 are amplified by
Q102 and sent to the buffer amplifiers Q103.
3）UNLOCK DETECTOR
If a pulse signal appears at the LD pin of IC100, an unlocked condition occurs, and the DC voltage
obtained form D105, R126 and C144 causes the voltage applied to the LOCK pin of the
microprocessor to go low. When the microprocessor detects this condition, the transmitter is disabled
and the error indicating alarm occurs, ignoring the push-to-talk switch input signal
4．Transmitter
1）Transmit audio
The modulation signal from the microphone is amplified by IC400 (1/2), passes through a
pre-emphasis circuit, and amplified by the other IC400 (1/2) to perform IDC operation. The signal then
passes through a low-pass filter (splatter filter) (Q401 and Q400) and cuts 3 kHz and higher
frequencies. The resulting signal goes to the VCO through the VCO modulation terminal for direct FM
modulation.
2）QT/DQT encoder
A necessary signal for QT/DQT encoding is generated by IC1 and FM-modulated to the PLL
reference signal. Since the reference OSC does not modulate the loop characteristic frequency or higher,
modulation is performed at the VCO side by adjusting the balance.
3）VCO and RF amplifier
The transmit signal obtained from the VCO buffer amplifier Q103, is amplified by Q205 and
Q204. This amplified signal is passed to the power amplifier, Q201 and Q200, which consists of a 2
stage FET amplifier and is capable of producing up to 4W of RF power.
4）ANT switch and LPF

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The RF amplifier output signal is passed through a low-pass filter network and a transmit /receive
switching circuit before it is passed to the antenna terminal. The transmit /receive switching circuit is
comprised of D200, D301 and D302. D301 and D302 turned on (conductive) in transmit mode and off
(isolated) in receive mode.
5) APC
The automatic power control (APC) circuit stabilizes the transmitter output power at a
predetermined level by sensing the drain current of the final amplifier Field effect Transistor (FET). The
voltage comparator, IC201B (2/2), compares the voltage obtained from the above drain current with a
reference voltage which is set using the microprocessor. An APC voltage proportional to the difference
between the sensed voltage and the reference voltage appears at the output of IC201A (1/2). This output
voltage controls the gate of the FET power amplifier, which keeps the transmitter output power constant,
The transmitter output power can be varied by the microprocessor which in turn changes the reference
voltage and hence, the output power.
6）Terminal protection circuit
When the thermistor (TH2) reaches about 80°C, the protection circuit turns on Q215 to protect
transmitting final amplifier (Q201) from the over heating.
5．Power supply
A 5V reference power supply [5V] for the control circuit is derived from an internal battery. This
reference is used to provide a 5V supply in transmit mode [TXC], a 5V supply in receive mode [RXC],
and a 5V supply common in both modes [PLC] based on the control signal sent from the
microprocessor.
6．Control system
The IC2 CPU operates at 18.0178 MHz. This oscillator has a circuit that shifts the frequency
according to the EEPROM data.

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PARTS LIST
A-80（D03）ABOM
Ref.
No. Specification Package Description Quantity Part No.
Chip Resistor
1 0R 0402 ±5% 1 R244
2 0R 0603 ±5% 4 R24 R26 R27 R28
3 0.39R 1206 ±5% 3 R236 R237 R238
4 10R 0603 ±5% 1 R1
5 100R 0603 ±5% 1 R449
6 330R 0603 ±5% 3 R5 R6 R16
7 390R 0603 ±5% 1 R253
8 470R 0603 ±5% 1 R413
9 680R 0402 ±5% 2 R232 R233
10 820R 0603 ±5% 1 R424
11 1K 0603 ±5% 10
R7 R8 R12 R17
R22 R30
R32 R34 R48
R401
12 1.5K 0603 ±5% 1 R421
13 2K 0603 ±5% 1 R420
14 2.2K 0603 ±5% 2 R60 R419
15 3.3K 0603 ±5% 2 R252 R402
16 4.7K 0603 ±5% 7 R11 R13 R14 R15
R39 R54 R61
17 5.6K 0603 ±5% 2 R247 R415
18 6.8K 0603 ±5% 2 R55 R409
19 10K 0402 ±5% 2 R231 R234
20 10K 0603 ±5% 6 R33 R35 R47 R59
R417 R418
21 15K 0603 ±5% 2 R411 R412
22 18K 0603 ±5% 1 R423
23 20K 0603 ±5% 1 R29
24 22K 0603 ±5% 1 R400
25 27K 0603 ±5% 1 R136
26 33K 0603 ±5% 4 R404 R405 R407
R408
27 47K 0402 ±5% 1 R235
28 47K 0603 ±5% 4 R40 R57 R131
R134

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29 51K 0603 ±5% 1 R410
30 68K 0603 ±5% 1 R10
31 82K 0603 ±5% 1 R135
32 100K 0402 ±5% 1 R245
33 100K 0603 ±5% 10
R31 R38 R41 R43
R44 R49
R50 R51 R139
R425
34 120K 0603 ±5% 1 R132
35 150K 0603 ±5% 7
R37 R239 R240
R241 R242
R243 R249
36 180K 0603 ±5% 1 R248
37 270K 0603 ±1% 1 R56
38 750K 0603 ±5% 1 R422
39 1M 0402 ±5% 1 R246
40 1M 0603 ±5% 1 R9
41 1.8M 0603 ±5% 2 R403 R406
42 NC 0603 1 R414
Resistor Network
43 1K×4 4×0603 YC164-JR-071K 3 CP1 CP2 CP4
44 100K×4 4×0603 YC164-JR-07100K 1 CP3
Adjustable Resistor
45 47K φ3 EVM3YSX50BQ4 1 VR400
46 220K φ3 EVM3YSX50BE5 2 VR100 VR101
Chip Capacitance
47 5PF 0402 COG，±0.1PF，50V 1 C344
48 10PF 0402 COG，±0.5PF，50V 1 C406
49 20PF 0402 COG，±5%，50V 1 C345
50 22PF 0402 COG，±5%，50V 2 C7 C8
51 100PF 0402 COG，±5%，50V 4 C29 C30 C246
C247
52 220PF 0402 COG，±5%，50V 3 C18 C23 C36
53 470PF 0402 X5R，±10%，16V 13
C34 C35 C40 C41
C43 C52
C53 C241 C249
C250 C252 C415
C416
54 470PF 0603 X5R，±10%，16V 1 C251
55 560PF 0402 X5R，±10%，16V 1 C421
56 680PF 0402 X5R，±10%，16V 2 C413 C414
57 1000PF 0402 X5R，±10%，16V 1 C420

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58 1000PF 0603 X5R，±10%，16V 1 C248
59 3300PF 0402 X5R，±10%，16V 2 C401 C403
60 3900PF 0402 X5R，±10%，16V 1 C9
61 0.01UF 0402 X5R，±10%，16V 8
C1 C4 C47 C48
C50 C51
C404 C412
62 0.022UF 0402 X5R，±10%，16V 2 C408 C417
63 0.027UF 0402 X5R，±10%，16V 3 C10 C11 C409
64 0.033UF 0402 X5R，±10%，16V 1 C57
65 0.047UF 0402 X5R，±10%，16V 2 C402 C405
66 0.1UF 0402 X5R，±10%，16V 2 C58 C243
67 0.1UF 0603 X5R，±10%，16V 12
C12 C26 C27 C28
C32
C33 C37 C49
C56 C242 C410
C418
68 1UF 0805 Y5V, +80,-20%,25V 2 C31 C122
69 NC 0402 2 C244 C346
70 NC 0603 3 C148 R62 R133
Tan Capacitance
71 0.47UF A 型 ±20% 6.3V 1 C5
72 1UF A 型 ±20% 6.3V 2 C42 C147
73 2.2UF A 型 ±20% 6.3V 2 C400 C419
74 4.7UF A 型 ±20% 6.3V 2 C55 C407
75 6.8UF A 型 ±20% 10V 1 C245
76 10UF A 型 ±20% 6.3V 3 C6 C39 C411
Inductor
77 BLM11A601S
BLM18AG601SN1D 0603 Bead 600R 8
L1 L3 L4 L5
L400 L401
L402 L2
78 LQH32MN1R0M23 1210 Wound，Ferrite 1 L207
Diode
79 LED-02-0603-QGC 0603 Green light 1 LED1
80 LED-02-0603-QRC 0603 Red light 1 LED2
81 1SS372 SOT-323 Detecting tube 1 D400
82 DAN222 SOT-416 DIODE 1 D401
83 MA2S111 SOD-523 DIODE 3 D3 D4 D1
Triode
84 2SA1362 SOT-23 TRANSISTOR 1 Q11
85 2SC4617（BR） SOT-416 TRANSISTOR 2 Q400 Q401
86 2SC4919 SOT-523 TRANSISTOR 1 Q403

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87 2SK1824 SOT-416 FET 2 Q214 Q402
88 DTA114YE SOT-416 TRANSISTOR 2 Q10 Q13
89 DTC114EE SOT-416 TRANSISTOR 6 Q2 Q3 Q12 Q14
Q202 Q203
90 DTC114TE SOT-416 TRANSISTOR 1 Q215
91 FMMT717 SOT-23 TRANSISTOR 1 Q211
IC
92 NJM2904V SSOP8 IC (APC) 1 IC201
93 AT24C08(SI27) SOP8 EEPROM 1 IC3
94 NJM2100V SSOP8 IC (AUDIO AMP) 1 IC400
95 XC6201P502PR SOT-89-3L IC（5V stability
voltage） 1 IC4
96 µPD78F0512GA(T)-8EU-A QFP48 CPU（model after
writing） 1 IC1
97 WTV040-20S SOP20 Phonetics IC 1 IC5
Crystal
98 18.0178MHz 6.0×3.5×1.0 18.0178MHz 1 X1
99 Fuse
100 3A-32V 1206 R429003-3A-32V 1 FU2
Connector
101 L10 10PIN
FFC/FPC
connector/(underside
connecting and upside
pressing /0.5mm)
1 CN1
A-80（D03）B BOM
Ref.
No. Specification Package Description Quantity Part No.
Chip Resistor
1 * 0603 1 R324

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2 0R 0805 ±5% 1 L301
3 0R 0603 ±5% 11
R112 R129 R140 R206 R304
R308 R309 R310 R311 R436
R440
4 0R 0805 ±5% 2 R201 R203
5 10R 0603 ±5% 5 R2 R103 R117 R216 R416
6 22R 0603 ±5% 3 R218 R222 R322
7 47R 0603 ±5% 3 R100 R200 R202
8 100R 0603 ±5% 3 R114 R301 R335
9 150R 0603 ±5% 2 R18 R314
10 220R 0603 ±5% 2 R312 R323
11 270R 0603 ±5% 5 R121 R125 R204 R205 R300
12 330R 0603 ±5% 4 R102 R130 R217 R221
13 470R 0603 ±5% 1 R329
14 560R 0603 ±5% 2 R106 R108
15 680R 0603 ±5% 2 R123 R220
16 1K 0603 ±5% 5 R107 R127 R224 R313 R426
17 1K 0603 ±1% 1 R448
18 1.2K 0603 ±5% 2 R128 R331
19 1.5K 0603 ±5% 1 R219
20 1.8K 0603 ±5% 3 R338 R339 R427
21 1.8K 0603 ±1% 1 R442
22 2.2K 0603 ±5% 2 R20 R111
23 2.7K 0603 ±5% 1 R109
24 3.3K 0603 ±5% 5 R105 R124 R305 R332 R334
25 3.9K 0603 ±5% 1 R321
26 4.7K 0402 ±5% 1 C425
27 4.7K 0603 ±5% 2 R25 R137
28 5.6K 0402 ±5% 1 C426
29 5.6K 0603 ±5% 4 R434 R450 R451 R454
30 6.8K 0603 ±5% 1 R101
31 8.2K 0603 ±5% 1 R119
32 10K 0603 ±5% 4 R19 R104 R110 R207
33 10K 0603 ±1% 1 R441
34 18K 0603 ±5% 1 R210
35 22K 0603 ±5% 1 R433
36 33K 0603 ±5% 1 R3
37 47K 0603 ±5% 5 R4 R118 R126 R208 R223
38 51K 0603 ±5% 2 R211 R333
39 56K 0603 ±5% 1 R23
40 68K 0603 ±5% 0

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41 91K 0603 ±5% 1 R453
42 100K 0603 ±5% 22
R113 R115 R116 R138 R302
R303
R306 R307 R315 R316 R317
R318 R320 R325 R326 R327
R328
R435 R438 R444 R445 R446
43 120K 0603 ±5% 4 R122 R428 R437 R452
44 180K 0603 ±5% 2 R337 R443
45 220K 0603 ±5% 3 D106 R319 R432
46 270K 0603 ±5% 1 R447
47 390K 0603 ±5% 1 R431
48 470K 0603 ±5% 2 R21 R439
49 680K 0603 ±5% 1 R330
Resistor Network
50 1K×4 4×0603 YC164-JR-071K 1 CP100
Thermistor
51 NCP18WB473J03RB 0603 NTC Thermistor 1 TH2
Chip Capacitance
52 0.5PF 0402 COG，±0.1PF，16V 7 C101 C104 C107 C129 C306
C309 C317
53 1PF 0402 COG，±0.1PF，16V 2 C214 C215
54 1.5PF 0402 COG，±0.1PF，16V 2 C305 C339
55 2PF 0402 COG，±0.1PF，16V 4 C115 C208 C210 C217
56 2.4PF 0402 COG，±0.1PF，16V 1 C219
57 2.5PF 0402 COG，±0.1PF，16V 2 C120 C319
58 3PF 0402 COG，±0.1PF，16V 1 C218
59 3.6PF 0402 COG，±0.1PF，16V 0
60 4PF 0402 COG，±0.1PF，16V 3 C105 C216 C320
61 5PF 0402 COG，±0.1PF，16V 2 C123 C340
62 6PF 0402 COG，±0.1PF，16V 5 C109 C112 C303 C328 C337
63 7PF 0402 COG，±0.1PF，16V 4 C124 C212 C238 C329
64 8PF 0402 COG，±0.1PF，16V 3 C125 C130 C333
65 10PF 0402 COG，±0.5PF，16V 3 C106 C153 C154
66 12PF 0402 COG，±5%，16V 1 C234
67 12PF 0603 COG，±5%，16V 1 C207
68 13PF 0402 COG，±5%，16V 1 C323
69 15PF 0402 COG，±5%，16V 1 C103
70 20PF 0402 COG，±5%，16V 1 C121
71 22PF 0402 COG，±5%，16V 2 C110 C202

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72 30PF 0402 COG，±5%，16V 1 C355
73 30PF 0603 COG，±5%，16V 1 C206
74 33PF 0402 COG，±5%，16V 1 C348
75 39PF 0603 COG，±5%，16V 1 C205
76 56PF 0402 COG，±5%，16V 1 C437
77 82PF 0402 COG，±5%，16V 3 C326 C350 C352
78 100PF 0402 COG，±5%，16V 6 C16 C102 C117 C141 C142
C143
79 150PF 0402 COG，±5%，16V 1 C118
80 220PF 0402 COG，±5%，16V 0
81 470PF 0402 X5R，±10%，16V 35
C38 C44 C111 C128 C134 C135
C201 C209 C211 C213
C221 C224 C233 C235 C236
C237 C239 C301 C304
C310 C312 C313 C314 C315
C327 C330 C331 C332
C335 C336 C338 C341 C353
C356 C435
82 470PF 0603 X5R，±10%，16V 2 C100 C311
83 1000PF 0402 X5R，±10%，16V 20
C14 C21 C45 C127 C136 C146
C149
C150 C200 C203 C204 C302
C322 C324
C343 C347 C359 C434 C438
C440
84 3300PF 0603 X5R，±10%，16V 1 R429
85 4700PF 0402 X5R，±10%，16V 2 C113 C363
86 5600PF 0402 X5R，±10%，16V 2 C428 C429
87 8200PF 0402 X5R，±10%，16V 1 C427
88 0.01UF 0402 X5R，±10%，16V 11 C22 C25 C119 C131 C132 C133
C151 C225 C300 C321 C354
89 0.01UF 0402 X5R，±10%，16V 1 C441
90 0.018UF 0402 X5R，±10%，16V 2 C442 C443
91 0.033UF 0402 X5R，±10%，16V 3 C430 C439 R430
92 0.1UF 0402 X5R，±10%，16V 2 C349 C371
93 0.1UF 0603 X5R，±10%，16V 20
C2 C3 C19 C46 C116 C137 C139
C144 C145 C223 C240 C325
C351 C358 C361 C362 C422
C423 C431 C444
94 0.47UF 0603 X5R，±10%，16V 2 C17 C20
95 1UF 0603 Y5V,＋80%－
20%,25V 2 C432 C433

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96 1UF 0805 Y5V,＋80%－
20%,25V 2 C226 C13
97 NC 0402 4 C220 C318 C334 C424
98 NC 0603 1 C155
Adjustable
capacitance
99 6PF φ2 TZVY2Z060A110T00 3 TC100 TC101 TC301
100 10PF φ2 TZVY2Z100A001R00 1 TC300
Tan capacitance
101 0.68UF A type ±20% 16V 1 C114
102 3.3UF A type ±20% 16V 1 C140
103 4.7UF A type ±20% 10V 3 C138 C152 C308
104 10UF A type ±20% 6.3V 3 C15 C357 C436
105 100UF C type ±20% 6.3V 1 C24
Inductor
106 BLM11A601S
BLM18AG601SN1D 0603 Bead 600R 7 L106 L110 L114 L117 L212
L300 L302
107 BLM21PG300SN1D 0805 Bead 1 L6
108 MGLB2012-011T 0805 CHIP CORE 2 L208 L209
109 LQG15HN2N2J02D 0402 HF Multi layer
Inductor 1 L201
110 LQG15HN15NJ02D 0402 HF Multi layer
Inductor 1 L210
111 LQG15HN18NJ02D 0402 HF Multi layer
Inductor 2 L100 L211
112 LQG15HN22NJ02D 0402 HF Multi layer
Inductor 3 L105 L115 L306
113 LQW31HN27NJ03L 1206 HF wound inductor 1 L103
114 LQW31HN33NJ03L 1206 HF wound inductor 1 L109
115 LQG15HN39NJ02D 0402 HF Multi layer
Inductor 1 L113
116 LQG15HNR10J02D 0402 HF Multi layer
Inductor 3 L303 L107 L108
117 MLG1608BR10J 0603 HF Multi layer
Inductor 1 L111
118 MLF1608A1R0K 0603 HF Multi layer
Inductor 2 L313 L314

A-80 UHF SERVICE MANUAL
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119 NLV25T-R56J-PF 2520 HF wound inductor 2 L305 L203
120 NLV25T-1R0J-PF 2520 HF wound inductor 1 L200
121 MLF1608A3R3K 0603 HF Multi layer
Inductor 5 R120 L101 L102 L104 L112
122 LFLK21254R7K 0805 HF Multi layer
Inductor 1 L118
123 0.4×φ1.6×3TR P type AIR-CORE COIL with
Pin "E” 4 L307 L308 L310 L311
124 0.4×φ1.6×4TR P type AIR-CORE COIL with
Pin "E” 4 L204 L205 L206 L309
125 0.4×φ1.8×4TR P type AIR-CORE COIL with
Pin "E” 1 L304
126 0.4×φ1.6×5TR P type AIR-CORE COIL with
Pin "E” 0
127 0.4×φ1.6×7TR P type AIR-CORE COIL with
Pin "E” 1 L202
128 NC 0402 1 L116
Diode
129 HSC277 SOD-523 DIODE 4 D201 D300 D301 D302
130 HVC350B SOD-523 Varactor 5 D303 D304 D305 D306 D307
131 HVU131 SOD-323-A DIODE 1 D200
132 ISR154-400 SOD-106 DIODE 1 D2
133 ISV269 SOD-323-A Varactor 1 D104
134 ISV270 SOD-323-A Varactor 4 D100 D101 D102 D103
135 MA2S111 SOD-523 DIODE 2 D105 D107
Triode
136 2SA1362 SOT-23 TRANSISTOR 2 Q4 Q9
137 2SC2714 SOT-23 TRANSISTOR 1 Q302
138 2SC4226(R24) SOT-323 TRANSISTOR 5 Q100 Q101 Q102 Q103 Q205
139 2SC4617 SOT-416 TRANSISTOR 3 Q107 Q405 Q406
140 2SC4988 SOT-89-3L TRANSISTOR 1 Q204
141 2SK1824 SOT-416 FET 1 Q404
142 2SK508NV(K52) SOT-23 FET 1 Q104
143 AO3400 SOT-23 FET 1 Q6
144 3SK318 SOT-343 FET 2 Q300 Q301
145 DTA114EE SOT-416 TRANSISTOR 1 Q311
146 DTA114YE SOT-416 TRANSISTOR 1 Q303
147 DTA143TE SOT-416 TRANSISTOR 2 Q105 Q106
148 DTC114EE SOT-416 TRANSISTOR 3 Q5 Q7 Q8

A-80 UHF SERVICE MANUAL
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149 2SK3475 SOT89-3L FET 1 Q200
150 2SK3476 2-5N1A FET 1 Q201
IC
151 TA7368F SOP10 AUDIO POWER
AMP 1 IC2
152 TA31136FN TSOP16 IF SYSTEM 1 IC300
153 MB1511PFV SSOP20 PLL 1 IC100
154 NJM2902-A SSOP14 AUDIO AMP 1 IC401
Crystal
155 12.8MHZ 3.2×5mm NT5032S 1 X100
Touch-key
156 TSHW-2VSL 7×2.5mm 2 S1 S2
PCB（A-80 UHF
V01）
PSW 1.0 V01
-072407
UHF
1
A-80（D47）A BOM
Ref.
No. Specification Package Description Quantity Part. No.
Chip Resistor
1 0R 0402 ±5% 1 R244
2 0R 0603 ±5% 4 R24 R26 R27 R28
3 0.39R 1206 ±5% 3 R236 R237 R238
4 10R 0603 ±5% 1 R1
5 100R 0603 ±5% 1 R449
6 330R 0603 ±5% 3 R5 R6 R16
7 390R 0603 ±5% 1 R253
8 470R 0603 ±5% 1 R413
9 680R 0402 ±5% 2 R232 R233
10 820R 0603 ±5% 1 R424
11 1K 0603 ±5% 10 R7 R8 R12 R17 R22 R30
R32 R34 R48 R401
12 1.5K 0603 ±5% 1 R421
13 2K 0603 ±5% 1 R420
14 2.2K 0603 ±5% 2 R60 R419
15 3.3K 0603 ±5% 2 R252 R402
16 4.7K 0603 ±5% 7 R11 R13 R14 R15 R39
R54 R61
17 5.6K 0603 ±5% 2 R247 R415