HYT TC-508 User manual

8130050800100

TC-508 Service Manual
Contents
Revision History .............................................................................................................................................. 1
Copyright Information..................................................................................................................................... 1
Disclaimer......................................................................................................................................................... 1
Introduction...................................................................................................................................................... 1
Product Controls ............................................................................................................................................. 2
Software Specifications .................................................................................................................................. 3
Circuit Description........................................................................................................................................... 7
CPU Pins......................................................................................................................................................... 13
Parts List 1 ..................................................................................................................................................... 17
Tuning Description ........................................................................................................................................ 72
Troubleshooting Flow Chart......................................................................................................................... 78
Disassembly and Assembly ......................................................................................................................... 81
Exploded View ...............................................................................................................................................84
Parts List 2 ..................................................................................................................................................... 85
Packing Guide................................................................................................................................................ 86
PCB View ........................................................................................................................................................ 87
Level Diagram ................................................................................................................................................ 91
Block Diagram................................................................................................................................................ 92
Schematic Diagram ....................................................................................................................................... 93
Specifications ................................................................................................................................................ 99

TC-508 Service Manual
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Revision History
Version Date Description
V00 2012-01 Initial Release
Copyright Information
HYT is the trademark or registered trademarks of Hytera Communications Co., Ltd. (“Hytera”) in PRC
and/or other countries or areas. Hytera retains the ownership of its trademarks and product names.All
other trademarks and/or product names that may be used in this manual are properties of their
respective owners.
The product described in this manual may include the Company’s computer programs stored in memory
or other media. Laws in PRC and/or other countries or areas protect the exclusive rights of Hytera with
respect to its computer programs. The purchase of this product shall not be deemed to grant, either
directly or by implication, any rights to the purchaser regarding Hytera computer programs. Any Hytera
computer programs may not be copied, modified, distributed, decompiled, or reverse-engineered in any
manner without the prior written consent of Hytera.
Disclaimer
Hytera endeavors to achieve the accuracy and completeness of this manual, but no warranty of
accuracy or reliability is given.All the specifications and designs are subject to change without prior
notice due to continuous technology development. No part of this manual may be copied, modified,
translated, or distributed in any manner without the express written permission of Hytera.
If you have any suggestions or would like to learn more details, please visit our website at:
http://www.hytera.com.
Introduction
Manual Scope
This manual is intended for use by qualified technicians only.

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Product Controls
No. Part Name No. Part Name No. Part Name
○
1PTT Key ○ 2SK1 (programmable) ○ 3SK2 (programmable)
○
4Antenna ○ 5Channel Selector Knob ○ 6Radio On-Off/Volume
Control Knob
○
7Speaker ○ 8Microphone ○ 9LED Indicator
○
10 Battery Latch ○ 11 Accessory Jack Cover ○ 12 Accessory Jack
○
13 Strap Hole ○ 14 Belt Clip ○ 15 Battery
○
16 Screw ○ 17 Charging Piece

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Software Specifications
Status Indication
Operations/Functions LED Indications and Alert Tones
Wired
Clone
To enter Wired Clone Mode:
Source radio: Power on the radio while
holding down the SK1 key for
approximately 2 seconds.
Target radio: turn it on directly.
The LED on the source radio flashes red once during
the power-on process.
Status of the source radio in Wired Clone
Mode
(After the target radio is turned on and
the cloning cable is connected, press the
PTT key of the source radio to begin
cloning.)
The LED glows red during cloning process.
Error occurs during cloning:
a. User Clone: At the start of cloning, frequency
band and Model ID will be
checked. The LED glows orange
for 2 seconds and then goes out in
presence of any check failure. If
the check is successfully
carried out but error occurs
during cloning, the LED will
flash orange. In this case, press
any key to turn it off.
b. Factory Clone: The LED flashes orange in
presence of error. In this case,
press any key to turn it off.
The LED glows green after cloning is completed.
Status of the target radio in Wired Clone
Mode The LED glows green during cloning. The green LED goes out after cloning is completed.
Power On (to enter User Mode)
When the radio is turned on, a power-on alert tone
sounds and the LED flashes orange once.
When the radio is currently on a blank channel, it
sounds beep tones continuously.
Low Battery Alert The LED flashes red, and a low-pitched tone sounds
every 20 seconds (programmable by the dealer).
Transmitting
The LED glowsred during transmitting.
When TOT timer expires, the radio sounds beep tone
continuously.
A TOT pre-alert tone sounds before the TOT timer
expires.
Receiving The LED glows green during receiving.
Scan
The LED flashes green once per second during
scanning.
Scan Start Alert (programmable by the dealer): one
beep will sound.
Scan End Alert (programmable by the dealer): two
continuous beeps will sound.

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Writing/Reading
The LED glows red when the PC is reading data from
the radio.
The LED glows green when the PC is writing data into
the radio.
Power Adjustment
A low-pitched tone sounds when the radio switches
from high power to low power.
A high-pitched tone sounds when the radio switches
from low power to high power.
VOX / Channel Lock / Monitor One beep tone for enabling;
Two beep tones for disabling.
Description of Modes
User Mode
It is a conventional communication mode. The radio will enter this mode by default after power-on.
PC Programming Mode
The radio in User Mode enters PC Programming Mode through specific protocol based communication
with the programming software. In this mode, radio functions and tuning parameters can be set through
the programming software (including User Version and Factory Version).
Wired Clone Mode
1. Description
Wired Clone Mode is an independent mode. To access other modes, you must restart the radio.
Wired Clone Mode includes Clone Mode and Factory Clone Mode.
1) Clone Mode:
Connect two radios using a cloning cable. Power on the source radio while holding down the SK1 key;
and it will enter Clone Mode in approximately 2 seconds. The target radio can be directly turned on to
enter the User Mode. In this mode, data stored in EEPROM of the source radio will be cloned to
EEPROM of the target radio. The data transferred only involves channel data and common
parameters, excluding tuning data, version and serial No. of the model.
2) Factory Clone Mode:
Connect two radios using a cloning cable. Power on the source radio while holding downthe SK1 key,
and it will enter User Clone Mode by default in approximately 2 seconds. Afterwards press the SK1
key again to switch to the Factory Clone Mode.As for the target radio, directly power it on to enter the
User Mode. The data transferred covers all data in EEPROM (including settings for the Manual Tune
Switch), other than the serial No.
2. Process
1) The LED flashes red once after the source radio enters the Wired Clone mode. Press the PTT key
to begin to clone data to the target radio.

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2) During cloning, the LED of the source radio glows red, and the LED of the target radio glows green.
When cloning finishes,both LEDs go out, indicating that both radios are ready for another cloning.
3) If any abnormal situation occurs during cloning, the source radio will stop cloning and its LED will
flash orange, indicating that it is ready for another cloning.
4) When cloning ends, the source radio goes back to standby status. Press the PTT key again to
begin another cloning operation.
Manual Tune Mode
In this mode, you can manually tune the frequency deviation, power level and squelch level and etc.
Description of Tuning:
1. To enter Manual Tune Mode
Hold down the PTT and SK1 key for 2 seconds while powering on the radio. The LED glows orange to
indicate that the radio has entered the Manual Tune Mode. After the keys are released, the radio directly
enters the TX group by default (the tuning item depends on the position where the Channel Selector
knob locates).
(Note: To enter the Manual Tune Mode, make sure its switch is set to Open via the programming
software. If this switch is set to Close, the radio cannot enter this mode, which helps avoid change of
parameters and degradation of radio performance caused by user’s misoperations.. Keep this option
unchecked after values are well adjusted from factory, to avoid any unexpected change of values. Such
values can only be reset and changed in Manual Tune Mode only. ）
2. To switch between TX tuning items and RX tuning items
Rotate the Channel Selector knob to switch between TX tuning items and RX tuning items.
The LED glows red for TX tuning items and green for RX tuning items.
3. To switch between tuning items within TX group/RX group
TX group: CH1 toCH9 respectively represent TX Low Power, TX High Power, CDCSS Balance, CDCSS
Deviation, CTCSS Deviation (low), CTCSS Deviation (medium), CTCSS Deviation (high), TX
Low Voltage Threshold and Max. TXAudio Deviation.
The LED solidly glows red during TX group tuning (CH1 to CH9).
RX group:CH10 to CH13 respectively represent SQL Normal Open, SQL Normal Close, RX Low Voltage
Threshold and Bandpass Filter.

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The LED solidly glows green during RX group tuning (CH10 to CH13).
The LED goes out upon invalid items (CH14 to CH16).
4. To switch between wide and narrow band
Under a certain tuning item, long press the PTT key (the LED flashes orange to indicate valid press) to
switch between wide and narrow bands. After the band is selected, the first frequency of the current
band is the frequency for tuning by default.
5. To switch the frequency
Under a certain band, short press the PTT key (the LED flashes green to indicate valid press) to switch
the frequency orderly.
6. To tune the value
Under a certain band, short press the SK1 key to increase the value in step of 1, or hold down this key to
increase the value continuously in steps of 1. The value will remain unchanged once it reaches the
allowed maximum value.
Short press the SK2 key to decrease the value in step of 1, or hold down this key to decrease the value
continuously in steps of 1. The value will remain unchanged once it reaches the allowed minimum value.
7. About several special items
TX group: CH8 represents TX Low Voltage Threshold, which is related to AD sampling. Press the SK1 or
SK2 key after entering the above item, to activate AD sampling (including calculation) once.
Rotate the Channel Selector knob to save the current AD sampling value.
RX group:CH10 to CH12 represent SQL Normal Open, SQL Normal Close and RX Low Voltage
Threshold respectively, which are related to AD sampling. Press the SK1 or SK2 key after
entering the above items, to activate AD sampling (including calculation) once. Rotate the
Channel Selector knob to save the currentAD sampling value.
8. About the Key-press
Short press: key-press time shorter than 1 second;
Long press: key-press time longer than 1 second.

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Circuit Description
1. General Principle Diagram
The general circuit is composed of TX circuit, RX circuit, power supply circuit, control circuit and etc. See
the block diagram below:
Figure 1
TX Section: The audio signal from MIC is sent to the MCU chip (U601) directly. The baseband signal
processing circuit in U601 converts the amplified audio signal to digital signal via A/D conversion, and
then converts the digital signal to analog audio signal via D/A conversion after all processing procedures
such as filtering, signal compression, encryption, pre-emphasis, TX gain control and amplitude limiting
are completed. Then the analog audio signal from MCU passes through the low-pass filter circuit and
directly goes to VCO for frequency modulation. The modulated HF carrier signal passes through the
buffer amplifiers (Q104 and Q406), and goes to the amplifier (Q401) through the RF switch (D404). Then
the amplified RF signal enters the low-pass filter circuit after it is further amplified by the pre-driver (Q402)
and final-stage power amplifier (Q403), and then it will be finally transmitted via antenna after ultra
harmonics is removed.
RX Section: RF signals received via the antenna are fed to the band-pass filter to filter out undesired
out-of-band interference signal. Then the remaining RF signals are amplified by LNA Q501. Afterwards,
the amplified signal goes through the bandpass filter again to filter out undesired out-of-band
interference signal. Next, the RF signals will be mixed with the first local oscillator signal at Q502. Then

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the newly generated signals will be processed by crystal filter XF501 to produce 38.85M the first IF
signal. After being amplified, the IF signal goes via Q506 to the chip U611, where the IF signal will be
mixed with the second local oscillator for the second time to produce the 450KHz second IF signal.After
filtered by 450KHZ ceramic filter, U611 demodulates the IF signal to output audio signal, which will be
delivered to Q613 for amplification and output in two channels.After simple filtering, one of the channels
is fed to MCU U601 for CTCSS/CDCSS decoding; For the other channel, it goes through two stages of
low-pass filter first, and then it goes to high-pass filter (consisting of 4 operational amplifiers) for audio
processing. Finally, the signals will be sent to audio power amplifier U302 for amplification so as to drive
the speaker.
Power Supply Section: The 7.4V battery voltage is converted to 5V via DC-DC module U604, and further
converted via LDO U602 to 3V including two channels: VCC and VDD. VCC powers CPU and VDD
powers PLL circuit. The 5V voltage will be converted via LDO U606 to 4.5V including two channels: VT
and V-SAVE. V-SAVE powers VCO circuit and VT powers TX circuit. Finally, V-SAVE controlled by Q604
and Q305 outputs VR, which suppliesRX circuit.
2. Realization Methods of Basic Functional Modules
2.1 PLL Frequency Synthesizer
The PLL circuit mainly provides the first local oscillator signal (for RX) and RF carrier signal (for TX). It is
composed of VCO and PLL chip, allowing frequency tracking and channel switching under the control of
MCU signals.
1) PLL
Figure 2
The step frequency of PLLcircuit is 5 KHz or 6.25 KHz. In U101, the 38.4MHz reference oscillator signal
is divided into 5 KHz or 6.25 KHz reference frequency via a fixed counter in PLL. The signal from VCO
enters the PLL after processed by the buffer amplifier, and then it is applied to the variable frequency
divider in PLL for division. After division, the signal is compared with the reference frequency at the
phase detector (PD) in PLL. The signal from the PD passes through a low-pass filter and then is applied
to the varactors (D101 and D102) of VCO to control the output frequency. Then the RF signal is
processed by the buffer amplifiers (Q104 and Q406), and controlled by D404 and D405 to only serve as

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TX signal or RX first local oscillator signal.
2) VCO
The VCO section is realized by the three-point capacitor oscillator circuit. TX VCO and RX VCO share
the same oscillator circuit. Q103 controls the switch between TX VCO and RX VCO.
Note: If the PLL is unlocked, the LD pin of U101 outputs low level. If the microprocessor detects such
situation, TX/RX operation is prohibited, and an alarm sounds.
2.2 RF Power Amplifier Circuit (TX Section)
Figure 3
The modulated carrier signal from VCO is pre-amplified at Q104 and Q406, and controlled at D404 and
D405. Then it is amplified by the front-stage amplifier Q401, the pre-driver Q402 and the final-stage
amplifier Q403 orderly. Finally it goes to the LC low-pass filter (LPF) and is transmitted from the antenna
after high-order harmonics are removed by LPF.
APC circuit is composed of Q404, Q405 and U401. U401 controls the bias voltage at the gates of Q402
and Q403, to control TX current and to further regulate power.
2.3 RX LNA and Mixer Circuit (RX Section)
BPF1
BPF2
MIXER
Q502
2SK318
LNA
Q501
AT41511
DEMODULATING IC
U611
BA4116FV
IF2 FILLER
CF501
450 KHz
DEMODULATING
CIRCUIT
CD501，R502，
C536
1
3
2
4
SQUELCH DET
CIRCUIT
R562
C597
BUSY
LO
IF1 AMP
Q506
VDD
NOISE FILLER
CIRCUIT
R509
C553
R510 FIL IN
FIL OUT
IF1 FILLER
XF501
38.85MHz
Crystal
XT101
38.4MHz
N-DET
AF
AF AMP
U613
TA75S01F
AF PROCESSING
CIRCUIT
U610 ，C554，R538
AF
QT-AF
AFW/N
ANT LPF
Figure 4

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After the RF signals are received from the antenna, the undesired out-of-band signals are filtered out at
the bandpass filter. Then the remaining RF signals are amplified by LNAQ501. Afterwards, the amplified
signal goes through the bandpass filter again to eliminate undesired out-of-band interference signal.
After being filtered and amplified, the RF signals and first LO signals are mixed at Q502, and then the
mixed signal is filtered by crystal filter XF501 to get 38.85MHz differential signals as the first IF signal.
After being amplified by Q506, the IF signal goes to chip U611, where the signal will be mixed with the
second LO signal (38.4MHZ). Next, the signals will be filtered by CF501 to produce 450KHz IF signal.
When the IF signals are processed by demodulation circuit (including U611 and CD501) to generate
audio signals, which are delivered to IC Q613 for amplification and output in two channels. After simple
filtering, one channel of signals is sent to MCU U601 for CTCSS/CDCSS decoding; for the other channel,
it goes through two stages of low-pass filter first, and then it goes to high-pass filter U610 (consisting of
four operational amplifiers) for audio processing. Finally, the signals will be sent to audio power amplifier
U302 for amplification so as to drive the speaker.
2.4 MCU Control, Signal Processing and Audio Power Amplification
U601
MCU
SRT3210
MICJACK
VOX_DET
Q611
D616
R204
C204
C205
R607
R632
R206
AF AMP
U302
SW
VOLUME
S201
SW_CH ANNAL
RESET IC
U605
E2ROM
U603
DATA/STB/CK
LD
TX_CTL
SAVE
SDA/SCL
RESET
EC0/EC1/EC2/EC3
MODE
AF
VOX
1
2
PTT/SK1/SK2
APC
MIC IN
R_LED T_LED
LED
D601
LED
D602
SPK
MODE_OUT RXD
TXD
SP_JACK
J3
PJ-D3027D
1
2
MIC
B201
QT_OUT
T/R
QT_OUT
QT_MODULATING
FILLER
AF_MODULATING
FILLER
BATTERY
G602
W/N
AF_SW
Q302
BEEP
BEEP
AF_MUTE
RF_MUT E
Figure 5

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1) MCU Control Circuit
MCU control circuit is composed of MCU, EEPROM, and keys, etc. This section has the following
functions: to initialize data of the radio and save data to EEPROM; to detect battery voltage and signals
from external keys, LD and VOX, and to make response; to transmit required data to PLL based on the
channel encoding status; to switch and control RX/TX based on the input PTT signal; to switch the
squelch circuit on/off based on the input signaling decode signal and squelch level signal; to control
circuits of high/low power switch, audio power amplifier, VCO power supply, RX power supply and TX
power supply; (for programming) to communicate with PC via RXD/TXD based on the RS232 protocol,
and transmit/receive data to/from PC.
2) Signal Processing Circuit
a. TX Baseband Processing
The audio signals input from MIC are divided into two parts. One part enters U601, and is then converted
into digital signal by analog-to-digital conversion (ADC). Afterwards, the converted signal will go through
a series of processing including low-pass filtering, AGC, companding, high-pass filtering, encrypting and
pre-emphasizing, and then it will be output as baseband signal after digital-to-analog conversion (DAC).
The baseband signal is processed by the active low-pass filter and then sent to VCO for modulation; for
the other part, it will go through VOX circuit (Q611 and D616) and then sent to MCU for VOX processing.
b. RX Baseband Process
The demodulated IF signals with CTCSS/CDCSS signaling enter U601 for decoding. After
analog-to-digital conversion, the IF signals will be converted into digital signals, which go to low-pass
filter for filtering and then are divided into two parts. One part is processed by CTCSS/CDCSS decoder,
and the other is processed by high-pass filter and then is subject to de-emphasis, decryption, signal
expansion etc, and finally digital-to-analog conversion to output audio signal.
3) Audio Power Amplifier
The audio signal output from U601 is amplified by the audio power amplifier (U302) to drive the speaker
directly.

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2.5 Power Supply Section
LDO
U604
LDO
U602
LDO
U606
V_BAT
TX_CTL
SAVE
VT
VR SW
Q604
Q305
V_SAVE
VR
VCC
VDD
5V
RF_MUTE
Figure 6
Power Supply Section: The 7.4V battery voltage is converted to 5V via DC-DC module U604, and further
converted via LDO U602 to 3V including two channels: VCC and VDD. VCC powers CPU and VDD
powers PLL circuit. The 5V voltage will be converted via LDO U606 to 4.5V including two channels: VT
and V-SAVE. V-SAVE powers VCO circuit and VT powers TX circuit. Finally, V-SAVE controlled by Q604
and Q305 outputs VR, which supplies RX circuit.

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CPU Pins
Pin No. Port Name Pin Name I/O Function
1 NC / / /
2 NC / / /
3 NC / / /
4 NC / / /
5 NC / / /
6 TXD TXD O UART TxD
7 RXD RXD I UART RxD
8 P60 APA_EN O Speaker control pin (H: on; L: off)
9 P61 SAVE_CTL O Battery save control pin. In non-battery-save
status, it is set to high level.
10 P62 EXT MIC I For checking MIC connection (valid at high level)
11 P63 EXT PTT I Earpiece PTT input pin (valid at high level)
12 P64 Red LED O Red LED indicator pin
13 P65 Green LED O Green LED indicator pin
14 P66 R/T O For TX/RX control (H: RX; L: TX)
15 P67 RX_CTRL O For RX power control (valid at high level)
16 Vssd GND S Power ground for digital circuit
17 Vddd VCC（3.0V）S Power supply for digital circuit
18 P50/INT0 Reserve O Reserved
19 P51/INT1 Reserve O Reserved
20 P52/INT2 Reserve O Reserved
21 P53/INT3 SK2 I Programmable SK2 pin (valid at low level,
connected with pull-up resistor)
22 P54/INT4 SK1 I Programmable SK1 pin (valid at low level,
connected with pull-up resistor)
23 P55/INT5 PTT I PTT key pin (valid at low level, connected with
pull-up resistor)
24 P56/INT6 Reserve O Reserved
25 P57/INT7 Reserve O Reserved
26 Vdd_CLD VCC（3.0V）S Power supply for digital power amplifier
27 CLD_OUTP CLD_OUTP O Positive output of digital power amplifier
28 VSS_CLD GND S Power ground for digital power amplifier

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29 CLD_OUTM Reserve O Negative output of digital power amplifier
30 Vdd_CLD VCC（3.0V）S Power supply for digital power amplifier
31 P77 Reserve O Reserved
32 P76/DAC1 APC/TU DA TX power control/ RX bandpass control pin
33 P75/VREF VCC(3.0V) I ADC and DAC reference voltage input pin
34 P74/DAC0 QT_OUT DA CTCSS/CDCSS output pin
35 P73/AD3 VOX AD For detecting VOX
36 Vssa GND S Power ground for analog circuit
37 Vdda VCC（3.0V）S Power supply for analog circuit
38 P72/AD2 Reserve AD Reserved
39 P71/AD1 SQL AD For detecting noise
40 P70/AD0 BAT_DET AD For detecting battery strength
41 XTAL0 OSC0 For connecting 32.678KHz main crystal oscillator
42 XTAL1 OSC1
43 PLL_CAP PLL_CAP For connecting PLL external capacitor (10nF)
44 NC / / /
45 NC / / /
46 NC / / /
47 NC / / /
48 NC / / /
49 P03/COM3 VOICE_DATA O Voice IC data pin
50 P02/COM2 VOICE_BUSY I Voice IC feedback pin
51 P01/COM1 VOICE_CLK O Voice IC clock pin
52 P00/COM0 VOICE_RESET O Voice IC reset pin
53 P10/SEG0 Reserve O Reserved
54 P11/SEG1 Reserve O Reserved
55 P12/SEG2 RX_MUTE O RX circuit control pin (H: On)
56 P13/SEG3 LD I For detecting PLL unlock
(H: locked; L: unlocked) (connected with pull-up
resistor)
57 P14/SEG4 Reserve O Reserved
58 P15/SEG5 Reserve O Reserved
59 P16/SEG6 Reserve O Reserved

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60 P17/SEG7 Reserve O Reserved
61 P20/SEG8 EN0 I
For detecting encode switch input
62 P21/SEG9 EN1 I
63 P22/SEG10 EN2 I
64 P23/SEG11 EN3 I
65 P24/SEG12 Reserve O Reserved
66 P25SEG13 Reserve O Reserved
67 P26/SEG14 Reserve O Reserved
68 P27/SEG15 Reserve O Reserved
69 P30/SEG16 Reserve O Reserved
70 P31/SEG17 Reserve O Reserved
71 NC / / /
72 NC / / /
73 NC / / /
74 NC / / /
75 NC / / /
76 P32/SEG18 Reserve O Reserved
77 P33/SEG19 Reserve O Reserved
78 P34/SEG20 Reserve O Reserved
79 P35/SEG21 Reserve O Reserved
80 P36/SEG22 Reserve O Reserved
81 P37/SEG23 Reserve O Reserved
82 P40/SEG24 Reserve O Reserved
83 P41/SEG25 SCL O EEPROM clock pin (connected with pull-up
resistor)
84 P42/SEG26 SDA O EEPROM data pin (connected with pull-up
resistor)
85 P43/SEG27 W/N O Wide/ narrow band control pin (H: wide; L:
narrow)
86 P44/SEG28 LE O PLL enable pin
87 P45/SEG29 DATA O PLL data pin
88 P46/SEG30 CK O PLL clock pin
89 Vssd GND S Power ground for digital circuit
90 Vddd VCC（3.0V）S Power supply for digital circuit

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91 SW_P0 Reserve O Reserved
92 SW_P1 TX_CTRL O TX power control pin (H: Transmit)
93 RESET RESET I Reset input pin
94 Vssa GND S Power ground for analog circuit
95 Vdda VCC（3.0V）S Power supply for analog circuit
96 BG_REF O Reference voltage output pin
97 MIC_IN MIC_IN I Microphone input pin
98 DEMODE DEMODE I Baseband signal input pin (audio and CTCSS)
99 MODOUT MODOUT O Baseband signal output pin (audio and CTCSS)
100 NC / / /

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Parts List 1
UHF1: 400-420MHz
No. Part No. Description
Qty
Ref No. Print No.
1 3001050000000 Chip resistor 0ΩJ 1/16W (RoHS) 1 R222 B5I
2 3001050000000 Chip resistor 0ΩJ 1/16W (RoHS) 1 R402 T4F
3 3001050000000 Chip resistor 0ΩJ 1/16W (RoHS) 1 R442 B3E
4 3001050000000 Chip resistor 0ΩJ 1/16W (RoHS) 1 R511 T3E
5 3001050000000 Chip resistor 0ΩJ 1/16W (RoHS) 1 R533 T2G
6 3001050000000 Chip resistor 0ΩJ 1/16W (RoHS) 1 R554 T3I
7 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R108 T4I
8 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R111 T5I
9 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R315 B1A
10 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R323 B1F
11 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R408 T5F
12 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R530 T2J
13 3001051000020 Chip resistor 10ΩF 1/16W (RoHS) 1 R534 T3J
14 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R101 T5I
15 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R119 T4F
16 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R123 T3G
17 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R429 T3G
18 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R531 T3I
19 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R604 B4I
20 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R605 B4A
21 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R614 B1C
22 3001051010000 Chip resistor 100ΩJ 1/16W (RoHS) 1 R623 B2I
23 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R109 T4H
24 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R114 T4G
25 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R121 T4I
26 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R211 T1E
27 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R214 B2H
28 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R313 B3D
29 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R319 T1I
30 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R322 B2E
31 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R327 T1I
32 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R609 T2D
33 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R621 B2B
34 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R626 T2D
35 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R644 T3I
36 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R650 B1H
37 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R683 T1D
38 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R684 T4H
39 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R690 B4J

TC-508 Service Manual
18
No. Part No. Description
Qty
Ref No. Print No.
40 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R691 B4J
41 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R692 B3J
42 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R693 B3J
43 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R696 B4J
44 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R697 B4J
45 3001051020000 Chip resistor 1KΩF 1/16W (RoHS) 1 R698 B4J
46 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R103 T5I
47 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R107 T4H
48 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R208 B2H
49 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R219 B1F
50 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R314 T1I
51 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R413 T3F
52 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R428 B4E
53 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R430 T3G
54 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R433 T3F
55 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R616 B2I
56 3001051030000 Chip resistor 10KΩJ 1/16W (RoHS) 1 R617 B2I
57 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R113 T5F
58 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R120 T4I
59 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R213 B2H
60 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R513 T3E
61 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R517 T2F
62 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R518 T2F
63 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R521 T2E
64 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R522 T3E
65 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R526 T2E
66 3001051040000 Chip resistor 100KΩF 1/16W (RoHS) 1 R603 B5I
67 3001051050000 Chip resistor 1MΩF 1/16W (RoHS) 1 R218 B1F
68 3001051050000 Chip resistor 1MΩF 1/16W (RoHS) 1 R405 B4E
69 3001051050000 Chip resistor 1MΩF 1/16W (RoHS) 1 R435 B3E
70 3001051050000 Chip resistor 1MΩF 1/16W (RoHS) 1 R501 T2H
71 3001051230000 Chip resistor 12KΩJ 1/16W (RoHS) 1 R206 B4I
72 3001051230000 Chip resistor 12KΩJ 1/16W (RoHS) 1 R224 B5I
73 3001051230000 Chip resistor 12KΩJ 1/16W (RoHS) 1 R512 T3E
74 3001051230000 Chip resistor 12KΩJ 1/16W (RoHS) 1 R544 T3J
75 3001051510000 Chip resistor 150ΩJ 1/16W (RoHS) 1 R115 T4G
76 3001051530000 Chip resistor 15KΩJ 1/16W (RoHS) 1 R543 T4J
77 3001051540020 Chip resistor 150KΩJ 1/16W (RoHS) 1 R523 T1F
78 3001051540020 Chip resistor 150KΩJ 1/16W (RoHS) 1 R545 T3J
79 3001051820000 Chip resistor 1.8KΩJ 1/16W (RoHS) 1 R414 T4E
80 3001051220000 Chip resistor 1.2KΩJ 1/16W (RoHS) 1 R529 T1G
81 3001051840000 Chip resistor 180KΩJ 1/16W (RoHS) 1 R528 T2G
82 3001052200000 Chip resistor 22ΩJ 1/16W (RoHS) 1 R651 B1H