Kenwood UBZ-LJ8 User manual

© 2002-12 PRINTED IN JAPAN
B51-8644-00 (N)506
FM TRANSCEIVER
UBZ-LJ8
SERVICE MANUAL
CIRCUIT DESCRIPTION ............................ 2
COMPONENTS DESCRIPTION ................ 7
TERMINAL FUNCTION ............................. 7
SEMICONDUCTOR DATA ........................ 8
PARTS LIST ............................................... 9
EXPLODED VIEW.................................... 13
PACKING ................................................. 14
ADJUSTMENT ........................................ 15
PC BOARD
TX-RX UNIT (X57-6672-70) (A/2) ....... 20
TX-RX UNIT (X57-6672-70) (B/2) ....... 24
SCHEMATIC DIAGRAM.......................... 26
BLOCK DIAGRAM ................................... 30
LEVEL DIAGRAM .................................... 32
UBC-4 (BATTERY CHARGER) ................ 33
UPB-1 (BATTERY PACK) ........................ 33
SPECIFICATIONS ................. BACK COVER
B:Black
Y:Yellow
SL : Silver
CONTENTS
Antenna
(T90-1016-05)
Knob (VOL)
(K29-9258-03)
Button knob (PTT)
(K29-9257-03)
Cap (SP/MIC)
(B09-0673-03)
Front glass
(B10-2742-03) : B
(B10-2748-03) : SL,Y
Key top (4 keys)
(K29-9256-02)
Cabinet assy (Front)
(A02-3794-03) : B
(A02-3795-03) : Y
(A02-3796-03) : SL

UBZ-LJ8
2
Frequency Configuration
CIRCUIT DESCRIPTION
Receiver System
■Front End
The high-frequency signal received from antenna passes
through a LPF (Low pass filter : components between ANT
and C73) to filter out unwanted high frequency signal. A
switch diode system (D8, L32 and D10) allows this signal to
pass through and enters the BPF (Band pass filter : L31) to
eliminate unwanted signal when receiving.
The resulting signal is amplified by high-frequency ampli-
fier (Q9) and goes to the first mixer (Q10).
■First Mixer
The amplified signal that reaches Q10 is mixed with the
first local signal from a VCO to produce a first IF signal
(21.7MHz).
(Receive frequency – First local frequency
= First IF frequency = 21.7MHz)
The first IF signal passes through MCF (Monolithic crystal
filter) XF1 to eliminate unwanted components.
The first IF signal is amplified by IF amplifier (Q11) before
going into FM IC (IC2).
BPF
446MHz
MIX, IF
DET
AF
AMP
MIC
AMP
RF
AMP
RF
AMP
RF
AMP
PLL
VCO
1st MIX
21.7MHz
MCF
21.25MHz
21.25MHz
SP
MIC
TCXO
Simplex
446.00625~
446.09375MHz
Simplex
424.30625~
424.39375MHz
LPF
RF
AMP
ANT Simplex
446.00625~446.09375MHz
ANT
SW
Fig. 1 Frequency configuration
Reception method Double super heterodyne
1st IF frequency 21.7MHz (Lower)
2nd IF frequency 450kHz (Lower)
Transmission method VCO direct amplification
Modulation Variable reactance phase modulation
Table 1
MIX,
DET
SP
ANT
ANT
SW
D8,D10
L32
RF AMP
Q9
IF AMP
Q11
AF AMP
IC203
1st MIX
Q10
LPF
MCF
XF1
21.7MHz
FM IC
IC2
BPF
L31
446MHz
1st local OSC (PLL) 2nd local OSC
Fig. 3 Receiver front end and Mixer circuit
Fig. 2 Receiver section configuration
VCO
1st local
OSC
Q10
XF1
Q11
3R 3R
FM IC
L32
LPF
D8
3TANT
D10
Q9
3R
L31
Item Rating
Nominal center frequency (fo) 21.7MHz
Pass bandwidth ±3.75kHz or more at 3dB
Attenuation bandwidth ±14kHz or less at 40dB
Ripple 1dB or less
Insertion loss 3.5dB or less
Ultimate attenuation 80dB or more (fo ±910kHz)
Spurious responses 40dB or more (fo ±1MHz)
Terminating impedance 850Ω±5% // 5pF±0.5pF
Table 2 MCF (L71-0616-05) : TX-RX Unit XF1
Item Rating
Nominal center frequency (fo) 450kHz
6dB bandwidth ±4.5kHz or more
50dB bandwidth ±10kHz or less
Ripple (450kHz ±3kHz) 3dB or less
Guaranteed attenuation (±100kHz) 40dB or more
Insertion loss 4dB or less
I/O matching impedance 2.0kΩ±10%
Table 3 Ceramic filter (L72-0974-05) : TX-RX Unit CF1

UBZ-LJ8
3
■IF Amplifier
The IF circuit consists of FM IC (IC2). This IC contains
local line input buffer, Mixer, FM DET and audio frequency
amplifier.
The First IF signal that comes from IF amplifier (Q11) then
goes into the FM IC mixer. It is mixed with second local fre-
quency (21.25MHz) that comes from the PLL IC reference
oscillation crystal so as to produce a second IF signal.
(21.7MHz – 21.25MHz = 2nd IF = 450kHz)
The 2nd IF signal then enters to ceramic filter (CF1) in or-
der to eliminate unwanted components. The filtered signal is
amplified by a limiter-amplifier, which consists of 6 differen-
tial amplifiers, to eliminate AM signal from 2nd IF.
The FM detector acts as a quadrature discriminator. The
phase of the output signal from the limiter is shifted by 90
degrees by a quad coil (L36). This output signal is compared
with the original non-shifted waveform to produce FM detec-
tion output.
■Squelch Circuit
A squelch circuit is provided to prevent interference from
noise or weak signal being output to the speaker during non-
transmitting state.
This circuit contains an amplifier (Q13) and a rectifier
(D11). The amplifier amplifies noise signals from FM detec-
tion output and passes them to a rectifier.
When there is no signal or weak signal being received, the
FM IC detection will output high frequency noise and the rec-
tifier will output high voltage level. When strong signal is
received, the FM IC detection noise is suppressed and the
rectifier output voltage level will be low.
MPU compares this rectifier output level to a predeter-
mined level so as to determine when to turn on the speaker.
Noise amplifier (Q13) and rectifier (D11) are used here in-
stead of FM IC internal circuit to prevent temperature toler-
ance.
IC2
FM IC
RSSI
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
LPF
MIX
Buff
QUAD DET
INV
Noise
AMP
IF AMP
OSC
IC203
AF AMP
CF1
450kHz
2nd local OSC
21.25MHz
PLL IC
L36
Quad
coil
3R3R AF OUT
AF IN SP
Q216
Q220
Batt
10
SP AMP
1
BUSY
D11
Q13
2
RSSI
IC208
MPU
1st IF input
(21.7MHz)
■AF Amplifier
The FM detection output signal passes through the base
band IC (IC209) which consists of band pass filter
(300Hz~3kHz), de-emphasis circuit and amplifier. Next, the
signal is passed to the volume control potential meter VR201
and then goes into the audio power amplifier (IC203) which
drives the speaker to produce audio output.
■ Loudness ON/OFF Circuit
Loud On/Off switching circuit is controlled by AF switch
(Q217,Q219,Q218). When Loud on, Q217 is On Q218 is Off.
When Loud off, Q217 is off Q218 is on.
When the SP/MIC option is inserted, Loud circuit be-
comes Off automatically.
Fig. 4 IF amplifier and Squelch circuit
Fig. 5 AF amplifier and Loudness on/off circuit
SP
C206
+
Q217
Q219
Q218
IC203
AF AMP
VR201
AMP
AMP
2320
De-emphasis
BPF
AFOUT
IC209 : Base band IC
BTL
SP AMP
SP MUT
RXINRXAF
CIRCUIT DESCRIPTION

UBZ-LJ8
4
Transmitter System
■Microphone Amplifier Circuit
The audio signal acquired from the microphone (MIC200)
passes through the MIC amplifier (IC204) to perform signal
amplification. An AGC (Automatic gain control) circuit is in-
cluded to maintain output audio signal level.
The amplified signal passes through the amplifier, pre-
emphasis circuit, limiter and Splatter filter contained inside
base band IC (IC209) and reaches the VCO as modulation sig-
nal. The splatter filter will eliminate the distortion compo-
nents outside the audio band.
■Modulation Circuit
The output signal of the base band IC passes through VR1
for Max Deviation Adjustment and goes to the modulation
input of the VCO circuit for a variable reactance phase modu-
lation.
■VOX Circuit
After amplified by MIC amplifier (IC204), MIC signal
passes through VOX amplifier (Q201) to eliminate signal
which is out of frequency range 300Hz~2.5kHz.
The resulting signal goes into rectifier (D203) and converts
into DC level. This DC level is compared with preset value in
MPU. If the level is higher than preset, MPU will start trans-
mitting.
■Transmission Output Circuit
The VCO output is amplified by a high-frequency amplifier
circuit (Q14, Q7 and Q8). The resulting signal will pass
through a high-frequency antenna switch (D8), a low pass fil-
ter before being transmitted by the antenna.
The output power is about 500mW with 4.5V DC supply at
battery terminal.
■Low Pass Filter Circuit
A three-stage low-pass filter is located between the an-
tenna and the antenna switch circuit. It helps to remove the
harmonic components that is generated by transmission cir-
cuit.
Fig. 6 Transmitter section configuration
Fig. 7 Microphone amplifier circuit
Fig. 9 Transmission output circuit
Fig. 8 VOX circuit
MIC
IC204
MIC AMP
VR1
Q2,Q4,Q6
VCO
Q14
RF AMP
Q7
RF AMP
Q8
RF AMP
ANT
SW LPF
ANT
AMP
Pre-
emphasis
BPF AMP Limiter
Splatter
filter
3
TX IN
7
MOD VCO
IC209 : Base band IC
IC204
MIC AMP
MIC
Q200
AGC
MIC
IC204
MIC AMP
Q201
VOX AMP 4VOX
IC208
MPU
D203
VCO
Q14 Q7 Q8
VR4
3T 3T
3T B
D8
D10
LPF
ANT
PLL System
■VCO Circuit
The VCO circuit is housed in a shielding case.
The VCO circuit consists of a oscillation transistor (Q2), a
variable capacitor diode (D2) for frequency control, a variable
capacitor diode (D3) for variable reactance modulation, trans-
mit/receive frequency switch diode (D1), control switch (Q1),
ripple filter (Q3) and buffer amplifier (Q4).
The oscillation frequency is mainly determined by C12,
C13, D2 and L3 (TX) or L3 and L2 (RX). D3 is used for modu-
lation.
In RX mode, the TX/RX switch line goes low; switch Q1
and D1 turn off. The inductor L2 will be connected to oscilla-
tion circuit and Q2 will produce the first local frequency for
reception purpose. (Receiving channel frequency subtracted
by 21.7MHz equals to the receive frequency.)
In TX mode, the TX/RX switch line goes high; switch Q1
and D1 turn on. The inductor L2 is bypassed to ground
through C2, D1 and C3. Q2 oscillation frequency becomes
about 446MHz and the VCO will output the frequency which
is needed for transmission.
The ripple filter (Q3) produces a 2.4V voltage supply for
the oscillation transistor (Q2). D4 is used for speeding up the
ripple filter operation when 3C line turns on.
CIRCUIT DESCRIPTION

UBZ-LJ8
5
■PLL Circuit
Frequency data is sent to the PLL IC (IC1) from MPU
(IC208) through common data line either when the set is
powered on, or when channel is changed, or when transmit
is required. This data sets the dividers and CP (Charge Pump)
of PLL IC.
The TCXO (X1) produces a 21.25MHz reference frequency
and passes to PLL IC. Reference frequency is divided to pro-
duce a 12.5kHz for comparison of frequency inside PLL IC.
The VCO output frequency is also passed to the PLL IC via
Fin. The divider of the PLL IC, which is set by MPU, also di-
vides this frequency. These two frequencies will be com-
pared by the phase comparator circuit of PLL IC so as to de-
tect the phase difference.
From the phase detection results, charge pump will be
able to output the PWM (Pulse Width Modulation) pulse.
This output voltage will then be used to control the VCO fre-
quency through PLL Loop Filter.
This control voltage passes through the loop filter which is
applied at the VCO control pin to control the oscillation fre-
quency. Basically, the loop filter removes unwanted harmon-
ics and noise produced at the output of the charge pump. It
also determines the PLL response by synchronizing the am-
plitude and phase characteristics.
■Unlock Detection Circuit
If the PLL cannot synchronize for some reason during op-
eration, the PLL IC will output a low voltage level signal at LD
(pin 5) to the MPU. MPU will stop transmitting or receiving to
prevent wrong frequency transmitted or received.
Control System
■Reset Circuit
When a battery is inserted, the MPU power supply pro-
vides the operating voltage after about 0.5sec. The reset IC
(IC202) output a low signal to reset the MPU so that MPU
starts to work correctly.
When battery voltage is lower than 3.0V (set working volt-
age limits) or battery is removed, another reset IC (IC206) will
send a reset to MPU so as to prevent this unit from working
under non-guarantee low voltage condition.
■Battery Voltage Indication Circuit
The unit contains a battery voltage detection circuit. This
circuit monitors battery voltage every half second and dis-
plays bars on LCD to indicate the battery level. Once battery
voltage drops below 3.2V, indicator will start flashing on LCD
and TX operation inhibits.
R11R12
R15
C10
C16
C22
C13
L6
R10
R7
R4
R2
R8
R13
R14 L4
L2
C9
C8
C19
C5
C6
R6
C3
C7
D3
D2
D1
D4
C12
C15 C26
R16
C4
C2
L3L1 Q2
Q4
Q3
+
L5 R17
R9
LV
R3
R5
Q1
TX/RX 3C MOD
VCO
output
L9
3
1
+
+
+
Loop filter
CP1 Xin 11
TCXO
X1
Vcon
3C 3C
554
LD
IC208
MPU
Fin1
VCO
LV (Lock Voltage)
3C,T/R,MOD VCO out
STB
DATA
CK
PLL DATA
(MPU)
IC1
PLL IC
UL
Fig. 10 VCO circuit
Fig. 11 PLL circuit
Fig. 12 Reset, battery voltage indication and
Power supply circuit
IC202
IC207
IC206
47
4863
49
46
60 814
VCC
RESETBATTL
3TC
3RC
3MC
SAVE
BATT IC208
MPU
B3M
VR4
PA
Q211
Q215
Q212
Q210
3MS
3C
3R
3T
CIRCUIT DESCRIPTION

UBZ-LJ8
6
■Power Supply Circuit
The battery voltage directly supplies RF final amplifier (Q8)
and AF amplifier (IC203) through AVR (Q216).
IC207 supplies 3V voltage to MPU, EEPROM and power
key.
Switch Q211 delivers 3V supply 3MS to base band IC,
MIC amplifier and VOX circuit when necessary.
Switch Q215 delivers 3V supply 3C to VCO and PLL circuit
during receiving, transmitting or standby.
Switch Q212 delivers 3V supply 3R to FM IC, Mixer, RX
amplifier and IF amplifier during receiving or standby.
Switch Q210 delivers 3V supply 3T to TX amplifier Q14,
Q7, TX/RX switch and the power control circuit of Q8.
Fig. 13 Speaker, microphone jack and Remote control circuit
3.9KSW1
LOCK SW
PTT
10KSW2 27KSW3
Internal MIC
PTT
3MS
MIC
SP/MIC DET
AFO
R295
IC208
MPU
REM 3
ø2.5
ø3.5
External MIC
External SP
(SMC-34 remote control speaker microphone)
IC203
AF AMP
3R
AF IN SP
Q216
Q220
Batt
10
SP AMP
1
BUSY
D11
Q13
2
RSSI
IC208
MPU
64
57
CTCSS IN
CTCSS OUT
FILOUT
RSSI
7
12
IC2
FM IC
AFOUT
9
IC211
LPF
15
21
7
IC209
Base
band IC
23
VCO
TX AMP
Mixer RX AMP
R273
C267 C266
R272
RC LPF
Fig. 14 CTCSS circuit
If there is no incoming signal or key press after 5 second,
unit will enter its power save mode. In power save mode, 3C
and 3R will be turned on and off respectively for power sav-
ing.
■Remote Control Circuit
The voltage at the MPU REM (pin 3) will be converted into
a digital signal to carry out remote operation according to the
predetermined voltages level.
The REM pin is set to about 3V by pull up resistor. When
remote control switch is pressed, the voltage divided by the
resistor in series with the pull up resistor will generate a volt-
age for MPU to recognize the operation.
■CTCSS Circuit
The tone frequency is generated by MPU (pin 57). This
PWM signal becomes a sinusoidal waveform after passing
through a RC low pass network. It will mix with voice signal
from base band IC and becomes modulation signal for VCO.
During receiving, the QT signal received from FM IC will
go through the base band IC so that signal with less than
300Hz will be output via IC209 pin 21. Next, it will pass
through the low pass filter (IC211) so as to eliminate un-
wanted noise. Then the filtered tone will be passed to the pin
64 of MPU where the digital filter inside the MPU will detect
the tone. If the tone is matched, MPU will turn on the
speaker.
CIRCUIT DESCRIPTION

UBZ-LJ8
7
TX-RX Unit (X57-6672-70) (A/2) : Control
Ref. No. Use/Function Operation/Condition/Compatibility
Q200 MIC Mute Switch On when microphone mute
Q201 VOX Amplifier
Q210 3T Switch 3T (3.0V)
Q211 3MS Switch 3MS (3.0V)
Q212 3R Switch 3R (3.0V)
Q213 Lamp LED switch On when lamp LED on
Q215 3C Switch 3C (3.0V)
Q216 AF Amplifier AVR Acts as a voltage regulator
Q217~219 AF Switch Internal/external speaker switch
Q220 AF Switch Acts as a voltage regulator
IC202 Voltage Detection 2.4V, MPU reset
IC203 AF Amplifier 2 pin : Input, 5 pin : Output 1,
8 pin : Output 2
IC204 MIC Amplifier 3 pin : Input, 4 pin : Output
IC206 Voltage Detection 3.0V, MPU reset
IC207 AVR 3M (3.0V)
IC208 MPU
IC209 Baseband IC Audio signal processing
IC210 EEPROM Operating data storage
IC211 Low Pass Filter CTCSS low pass filter
D200 Protection Diode
D202 MIC Mute Diode Acts as an OR gate
D203 Tone Signal Detection Rectification
D204 Tone Signal Detection Rectification
D205 Lamp LED LCD back light illumination
D206 Protection Diode
D208 Tone Signal Detection Rectification
D209,210 Voltage Level Shift Diode Acts as a zener diode
TX-RX Unit (X57-6672-70) (B/2) : RF
Ref. No. Use/Function Operation/Condition/Compatibility
Q1 Switch Off when RX
Q2 Oscillator RX : 424.30625~424.39375MHz
TX : 446.00625~446.09375MHz
Q3 Ripple Filter
Q4,5 Buffer
Q6 RF Amplifier For RX/TX
Q7 RF Amplifier For TX
Q8 RF Power Amplifier Transmit power
Q9 RF Amplifier For RX
Ref. No. Use/Function Operation/Condition/Compatibility
Q10 1st Mixer RX Frequency –
1st local oscillation frequency
Q11 IF Amplifier 1st IF 21.7MHz
Q13 Noise Amplifier
Q14 RF Amplifier For TX
IC1 PLL IC
IC2 FM IC
D1 RF Switch TX/RX switch
D2 Variable Capacitance VCO frequency control
Diode
D3 Variable Capacitance VCO modulation
Switch
D4 Speed Up For ripple filter
D5 Diode Unlock detect
D8,10 RF Switch Antenna switch
D11 Rectifier Convert noise to DC voltage
COMPONENTS DESCRIPTION / TERMINAL FUNCTION
TERMINAL FUNCTION
■CN1 and CN200
Pin No. Pin Name Function
1GND Ground
2MOD Voice modulation line
3GND Ground
4TO QT tone modulation line
5GND Ground
6BUSY RX busy detect
7GND Ground
83C 3V power supply for VCO and PLL
9GND Ground
10 UL PLL unlock L : Unlock
11 3T 3V power supply for TX
12 CK Clock line for PLL IC
13 3R 3V power supply for RX
14 DT Data line for PLL IC
15 B Battery voltage
16 EP Enable line for PLL
17 B Battery voltage
18 CRS RX carrier level detect
19 B Battery voltage
20 AFO RX audio output line

UBZ-LJ8
8
SEMICONDUCTOR DATA
MPU : M38C24M6502HP (IC208)
■Pin Function
Pin No. Pin Name I/O Function
1BUSY I Busy input
2RSSI I RSSI input
3REM I Remote key input
4VOX I VOX input
5TUNE I Enter to tuning mode
6OSCO O Oscillation output
7 FLASH (GND) -GND
8RESET I Reset input
9SPM O Speaker mute H : Mute
10 SPAMP O Speaker amp switch H : ON
11 GND - GND
12 Xin - Crystal (3.633MHz)
13 Xout - Crystal (3.633MHz)
14 Vcc - 3V
15 MJDET I MIC jack detection
16 BTLC O BTL control H : ON
17 ESDA I/O EEPROM data
18 ESCL O EEPROM clock
19 PWR I [Power] key input
20 RxD I PC interface
21 TxD O PC interface
22 PTT I [PTT] key input
23 MODE I [MODE] key input
24 NC - NC
25 COM2 O LCD common signal output (COM2)
26 COM1 O LCD common signal output (COM1)
27 COM0 O LCD common signal output (COM0)
28 NC - NC
29~44 S15~S0 O LCD segment output (SEG15~SEG0)
45 LAMP O Lamp control H : ON
46 3MC O 3C control L : ON
47 3TC O 3T control L : ON
48 3RC O 3R control L : ON
49 SAVE O Battery save control L : ON
50 CLK O Common clock
51 DAT O Common data
52 AKDIR O AK2346 DIR
53 PLLE O PLL IC enable
54 UL I PLL IC unlock
55 UP I [UP] key input
Pin No. Pin Name I/O Function
56 DOWN I [Down] key input
57 QTOUT O CTCSS output
58 BEEP O Beep output
59 MICM O MIC mute H : Mute
60 BATTL I Low battery detection
61 GND - GND
62 VREF - 3V reference voltage
63 BATT I Battery voltage
64 QTIN I CTCSS input
1k bit Serial EEPROM : AT24C01A10SI18 or
CAT24WC01JI18 (IC210)
■Pin Function
Pin No. Pin Name Function
1~3 A0~A2 Address inputs
4VSS Ground
5SDA Serial data
6SCL Serial clock input
7WP Write protect
8VCC Power supply
Reset IC :
BD4724G (IC202) and BD4730G (IC206)
■Pin Function
Pin No. Pin Name Function
1NC NC
2 VEE1 Reference voltage
3 VEE2 Reference voltage
4OUT Output voltage
5VCC Power supply
Audio Power Amplifier : LM4865M (IC203)
■Pin Function
Pin No. Pin Name Function
1VCC Supply voltage
2–VIN input
3 HP_SEN Detection of speaker and mic
4DC_VOL/SW DC voltage volume control
5VO1 Output 1
6GND Ground
7BYPASS Bypass capacitor
8VO2 Output 2

UBZ-LJ8
9
PARTS LIST
✽New Parts. indicates safety critical components.
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L: Scandinavia K:USA P:Canada
Y: PX (Far East, Hawaii) T:England E:Europe
Y:AAFES (Europe) X:Australia M:Other Areas
13A✽A02-3788-13 CABINET ASSY (REAR) BLACK
13A✽A02-3789-13 CABINET ASSY (REAR) YELLOW
13A✽A02-3790-13 CABINET ASSY (REAR) SILVER
21A✽A02-3794-03 CABINET ASSY (FRONT) BLACK
21A✽A02-3795-03 CABINET ASSY (FRONT) YELLOW
21A✽A02-3796-03 CABINET ASSY (FRONT) SILVER
43B✽B09-0673-03 CAP (SP/MIC)
51A✽B10-2742-03 FRONT GLASS BLACK
51A✽B10-2748-03 FRONT GLASS
SILVER,YELLOW
72C✽B62-1669-10 INSTRUCTION MANUAL
83A✽D10-0646-04 LEVER BLACK
83A✽D10-0647-04 LEVER YELLOW
83A✽D10-0648-04 LEVER SILVER
-✽D21-0860-14 SHAFT (LEVER)
12 1A E37-0810-15 PARALLEL CORD (SP)
14 3A ✽F07-1871-02 COVER (BATT) BLACK
14 3A ✽F07-1872-02 COVER (BATT) YELLOW
14 3A ✽F07-1873-02 COVER (BATT) SILVER
17 3A ✽G53-1557-03 PACKING (BATT COVER)
18 3B ✽G53-1558-04 PACKING (SP/MIC)
20 1C ✽J29-0700-03 BELT HOOK
22 1A ✽K29-9256-02 KEY TOP (4 KEYS)
23 1A ✽K29-9257-03 BUTTON KNOB (PTT)
24 2B ✽K29-9258-03 KNOB (VOL)
A2A,3A N09-2291-05 TAPTITE SCREW
C2A✽N14-0801-05 HEXAGON NUT (ANT)
D2A✽N17-1040-46 TOOTHED LOCK WASHER (ANT)
E2AN67-2005-46 PAN HEAD SEMS SCREW W (ANT)
B2A,3B N80-2014-45 PAN HEAD TAPTITE SCREW
26 1A T07-0362-05 SPEAKER
27 2A ✽T90-1016-05 ANTENNA
101 1B ✽B11-1298-03 ILLUMINATION GUIDE
102 1B ✽B38-0876-05 LCD
D205 B30-2143-05 LED (YG)
C2,3 CK73GB1H471K CHIP C 470PF K
C4 CC73GCH1H3R5B CHIP C 3.5PF B
C5 CK73GB1H471K CHIP C 470PF K
C6 CK73GB1A105K CHIP C 1.0UF K
C7 CC73GCH1H0R5B CHIP C 0.5PF B
C8 CK73GB1H471K CHIP C 470PF K
C9 CC73GCH1H030B CHIP C 3.0PF B
C10 CK73GB1H471K CHIP C 470PF K
C12 CC73GCH1H090B CHIP C 9.0PF B
C13 CC73GCH1H110J CHIP C 11PF J
C14 CC73GCH1H050C CHIP C 5.0PF C
C15 CC73GCH1H0R5B CHIP C 0.5PF B
C16 CK73GB1H471K CHIP C 470PF K
C17 CC73GCH1H030C CHIP C 3.0PF C
C18 CC73GCH1H080D CHIP C 8.0PF D
C19 CK73GB1H471K CHIP C 470PF K
C20 CC73GCH1H030C CHIP C 3.0PF C
C22 C92-0712-05 CHIP-TAN 22UF 6.3WV
C23 CC73GCH1H050C CHIP C 5.0PF C
C25 CK73GB1H471K CHIP C 470PF K
C26 CC73GCH1H080B CHIP C 8.0PF B
C27 CC73GCH1H020B CHIP C 2.0PF B
C28 CC73GCH1H030B CHIP C 3.0PF B
C29,30 CK73GB1H471K CHIP C 470PF K
C31 CK73GB1H182K CHIP C 1800PF K
C32 CC73GCH1H101J CHIP C 100PF J
C33 C92-0555-05 CHIP-TAN 0.047UF 35WV
C34 CK73GB1H102K CHIP C 1000PF K
C35 C92-0005-05 CHIP-TAN 2.2UF 6.3WV
C36-38 CC73GCH1H101J CHIP C 100PF J
C39 C92-0695-05 CHIP-TAN 10UF 10WV
C40 C92-0502-05 CHIP-TAN 0.33UF 35WV
C41 CC73GCH1H470J CHIP C 47PF J
C42 CK73GB1H102K CHIP C 1000PF K
C43 CC73GCH1H101J CHIP C 100PF J
C44 CC73GCH1H080D CHIP C 8.0PF D
C45 CC73GCH1H330J CHIP C 33PF J
C46 CC73GCH1H080D CHIP C 8.0PF D
C47 CK73GB1H471K CHIP C 470PF K
C50 CK73GB1H471K CHIP C 470PF K
C52 CC73GCH1H151J CHIP C 150PF J
C53 CK73GB1H471K CHIP C 470PF K
C55 CC73GCH1H070B CHIP C 7.0PF B
C57 CK73GB1C104K CHIP C 0.10UF K
C58 CC73GCH1H100C CHIP C 10PF C
C59 CC73GCH1H300J CHIP C 30PF J
C60 CC73GCH1H220J CHIP C 22PF J
C61 CK73GB1C104K CHIP C 0.10UF K
C62 CC73GCH1H300J CHIP C 30PF J
C63 CK73GB1C104K CHIP C 0.10UF K
C64,65 CK73GB1H471K CHIP C 470PF K
C66,67 CK73GB1A105K CHIP C 1.0UF K
C68 CC73GCH1H180J CHIP C 18PF J
C70,71 CK73GB1H471K CHIP C 470PF K
C73 CK73GB1H471K CHIP C 470PF K
C75 CC73GCH1H040B CHIP C 4.0PF B
C77 CC73GCH1H050B CHIP C 5.0PF B
C79 CC73GCH1H050B CHIP C 5.0PF B
C80,81 CC73GCH1H010B CHIP C 1.0PF B
C87 CK73GB1H471K CHIP C 470PF K
C88 CC73GCH1H030B CHIP C 3.0PF B
C89 CK73GB1H471K CHIP C 470PF K
C90 CC73GCH1H101J CHIP C 100PF J
C93 CK73GB1H471K CHIP C 470PF K
C94 CC73GCH1H050C CHIP C 5.0PF C
C96 CK73GB1H471K CHIP C 470PF K
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
UBZ-LJ8 (Y50-5762-XX)
TX-RX UNIT (X57-6672-70)
UBZ-LJ8
TX-RX UNIT (X57-6672-70)

UBZ-LJ8
10
PARTS LIST
C98,99 CK73GB1H471K CHIP C 470PF K
C101 CC73GCH1H030B CHIP C 3.0PF B
C102 CK73GB1H471K CHIP C 470PF K
C103 CC73GCH1H050B CHIP C 5.0PF B
C105 CC73GCH1H050C CHIP C 5.0PF C
C106 CK73GB1H103K CHIP C 0.010UF K
C107 CK73GB1H471K CHIP C 470PF K
C108 CC73GCH1H470J CHIP C 47PF J
C109 CK73GB1H103K CHIP C 0.010UF K
C110 CK73GB1H471K CHIP C 470PF K
C112 CC73GCH1H150J CHIP C 15PF J
C113 CC73GCH1H030B CHIP C 3.0PF B
C114 CK73GB1H102K CHIP C 1000PF K
C115 C92-0695-05 CHIP-TAN 10UF 10WV
C116,117 CK73GB1H103K CHIP C 0.010UF K
C118 CK73GB1A224K CHIP C 0.22UF K
C122 CK73GB1C473K CHIP C 0.047UF K
C124,125 CK73GB1H102K CHIP C 1000PF K
C127 CK73GB1C333K CHIP C 0.033UF K
C128 CK73GB1H182K CHIP C 1800PF K
C129 CK73GB1H102K CHIP C 1000PF K
C130-133 CK73GB1H471K CHIP C 470PF K
C134 CK73GB1H182K CHIP C 1800PF K
C135 CC73GCH1H270J CHIP C 27PF J
C136 CK73GB1C104K CHIP C 0.10UF K
C138 C92-0695-05 CHIP-TAN 10UF 10WV
C140,141 CK73GB1H102K CHIP C 1000PF K
C142 CK73GB1A105K CHIP C 1.0UF K
C143 C92-0695-05 CHIP-TAN 10UF 10WV
C144 CC73GCH1H4R5B CHIP C 4.5PF B
C146 CC73GCH1H040B CHIP C 4.0PF B
C147 CK73GB1H471K CHIP C 470PF K
C148 CC73GCH1H101J CHIP C 100PF J
C149 CC73GCH1H070B CHIP C 7.0PF B
C150 CC73GCH1H050B CHIP C 5.0PF B
C152,153 CC73GCH1H220J CHIP C 22PF J
C201 CK73GB1H103K CHIP C 0.010UF K
C206 C92-0665-05 TANTAL 100UF 6.3WV
C208 CK73GB1C104K CHIP C 0.10UF K
C209 CK73GB1H471K CHIP C 470PF K
C210 CK73GB1H102K CHIP C 1000PF K
C211 CK73GB1H471K CHIP C 470PF K
C212 C92-0695-05 CHIP-TAN 10UF 10WV
C220 C92-0695-05 CHIP-TAN 10UF 10WV
C221,222 CK73GB1C104K CHIP C 0.10UF K
C224 CC73GCH1H680J CHIP C 68PF J
C225 C92-0587-05 CHIP-TAN 2.2UF 4WV
C226 CK73GB1C223K CHIP C 0.022UF K
C227 CK73GB1A105K CHIP C 1.0UF K
C228,229 CK73GB1C104K CHIP C 0.10UF K
C233-235 CK73GB1A105K CHIP C 1.0UF K
C236 C92-0775-05 CHIP-TAN 47UF 4WV
C237 CK73GB1H471K CHIP C 470PF K
C238,239 CK73GB1H103K CHIP C 0.010UF K
C240-242 CK73GB1H471K CHIP C 470PF K
C243,244 CC73GCH1H150J CHIP C 15PF J
C245 CK73GB1A105K CHIP C 1.0UF K
C246 CK73GB1H471K CHIP C 470PF K
C247 CC73GCH1H121J CHIP C 120PF J
C248,249 CK73GB1C473K CHIP C 0.047UF K
C251 CK73GB1C104K CHIP C 0.10UF K
C252 CK73GB1H103K CHIP C 0.010UF K
C253 CK73GB1H222K CHIP C 2200PF K
C254,255 CK73GB1A105K CHIP C 1.0UF K
C258,259 CK73GB1A105K CHIP C 1.0UF K
C261 CC73GCH1H121J CHIP C 120PF J
C263 CK73GB1H182K CHIP C 1800PF K
C264 CK73GB1H822K CHIP C 8200PF K
C265-267 CK73GB1C104K CHIP C 0.10UF K
C272,273 CK73GB1C473K CHIP C 0.047UF K
C275 CK73GB1C223K CHIP C 0.022UF K
C276 CK73GB1C563K CHIP C 0.056UF K
C277 CK73GB1H681K CHIP C 680PF K
C279 CK73GB1A105K CHIP C 1.0UF K
C286 CK73GB1C104K CHIP C 0.10UF K
C288 CK73GB1H102K CHIP C 1000PF K
C290 CK73GB1C104K CHIP C 0.10UF K
C292 CK73GB1C104K CHIP C 0.10UF K
C293 CK73GB1H222K CHIP C 2200PF K
C294 CK73GB1H103K CHIP C 0.010UF K
C295 CK73GB1H392K CHIP C 3900PF K
C296 CK73GB1C683J CHIP C 0.068UF J
C297-302 CK73GB1H471K CHIP C 470PF K
C303,304 CK73GB1H103K CHIP C 0.010UF K
C305 CK73GB1A105K CHIP C 1.0UF K
C306 CK73GB1H471K CHIP C 470PF K
C307 CK73GB1A105K CHIP C 1.0UF K
103 1B ✽E29-1196-04 INTER CONNECTOR (LCD)
CN1 E40-6213-05 PIN ASSY
CN200 E40-6214-05 PIN ASSY SOCKET
J200 E11-0457-05 PHONE JACK (2.5/3.5)
F200 F53-0217-05 FUSE (3A)
104 1B ✽J21-8448-04 HARDWARE FIXTURE (LCD)
105 1A J30-1212-04 SPACER (MIC ELEMENT)
CF1 L72-0974-05 CERAMIC FILTER (450K)
L1 L40-1001-86 SMALL FIXED INDUCTOR (10UH)
L2 L40-6865-92 SMALL FIXED INDUCTOR (6.8NH)
L3 L40-3975-54 SMALL FIXED INDUCTOR (39NH)
L4 L40-1001-86 SMALL FIXED INDUCTOR (10UH)
L5 ✽L92-0444-05 FERRITE CHIP
L6 L40-1001-86 SMALL FIXED INDUCTOR (10UH)
L7,8 ✽L41-1275-06 SMALL FIXED INDUCTOR (12NH)
L9 ✽L41-2275-06 SMALL FIXED INDUCTOR (22NH)
L10 L41-2775-06 SMALL FIXED INDUCTOR (27NH)
L11 ✽L92-0444-05 FERRITE CHIP
L12 L40-4795-85 SMALL FIXED INDUCTOR (4.7UH)
L13 ✽L41-1075-06 SMALL FIXED INDUCTOR (10NH)
L14 L40-6865-92 SMALL FIXED INDUCTOR (6.8NH)
L15 L34-4568-05 AIR-CORE COIL
L16 ✽L92-0445-05 FERRITE CHIP
L17 L40-8265-92 SMALL FIXED INDUCTOR (8.2NH)
L18 L40-2285-54 SMALL FIXED INDUCTOR (220NH)
L20 ✽L41-1275-08 SMALL FIXED INDUCTOR (12NH)
L21,22 ✽L41-1575-08 SMALL FIXED INDUCTOR (15NH)
L26 L40-2275-92 SMALL FIXED INDUCTOR (22NH)
L27 ✽L40-2078-98 SMALL FIXED INDUCTOR (20NH)
L28 ✽L92-0444-05 FERRITE CHIP
L29,30 L40-1875-92 SMALL FIXED INDUCTOR (18NH)
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
TX-RX UNIT (X57-6672-70)

UBZ-LJ8
11
PARTS LIST
L31 ✽L79-1825-05 FILTER (447MHZ)
L32 L34-4572-05 AIR-CORE COIL
L33 ✽L92-0444-05 FERRITE CHIP
L34 L40-1095-34 SMALL FIXED INDUCTOR (1UH)
L35 ✽L40-1591-37 SMALL FIXED INDUCTOR (1.500UH)
L36 L34-4554-05 COIL
L37 L40-6865-92 SMALL FIXED INDUCTOR (6.8NH)
L38 L40-2775-92 SMALL FIXED INDUCTOR (27NH)
L41 L40-1581-35 SMALL FIXED INDUCTOR (150NH)
X1 ✽L77-1930-05 TCXO(21.2497MHZ)
X201 ✽L77-1928-05 CRYSTAL RESONATOR (3.633MHZ)
X201 ✽L77-1929-05 CRYSTAL RESONATOR (3.633MHZ)
XF1 ✽L71-0616-05 MCF (21.7MHZ)
F1A,1B N30-2004-46 PAN HEAD MACHINE SCREW
R1 RK73GB1J103J CHIP R 10K J 1/16W
R2 RK73GB1J102J CHIP R 1.0K J 1/16W
R3 RK73GB1J470J CHIP R 47 J 1/16W
R4 RK73GB1J102J CHIP R 1.0K J 1/16W
R5 RK73GB1J473J CHIP R 47K J 1/16W
R6 R92-1252-05 CHIP R 0 OHM J 1/16W
R7,8 RK73GB1J473J CHIP R 47K J 1/16W
R9 RK73GB1J104J CHIP R 100K J 1/16W
R10 RK73GB1J470J CHIP R 47 J 1/16W
R11 RK73GB1J152J CHIP R 1.5K J 1/16W
R12 RK73GB1J822J CHIP R 8.2K J 1/16W
R13 RK73GB1J103J CHIP R 10K J 1/16W
R14 RK73GB1J472J CHIP R 4.7K J 1/16W
R15 RK73GB1J221J CHIP R 220 J 1/16W
R16 RK73GB1J683J CHIP R 68K J 1/16W
R17 RK73GB1J101J CHIP R 100 J 1/16W
R18 RK73GB1J221J CHIP R 220 J 1/16W
R19 RK73GB1J104J CHIP R 100K J 1/16W
R20 RK73GB1J183J CHIP R 18K J 1/16W
R21 RK73GB1J153J CHIP R 15K J 1/16W
R22 RK73GB1J221J CHIP R 220 J 1/16W
R24 RK73GB1J122J CHIP R 1.2K J 1/16W
R25 RK73GB1J100J CHIP R 10 J 1/16W
R26 RK73GB1J332J CHIP R 3.3K J 1/16W
R27,28 R92-1252-05 CHIP R 0 OHM J 1/16W
R29 RK73GB1J563J CHIP R 56K J 1/16W
R30 RK73GB1J103J CHIP R 10K J 1/16W
R31 R92-1252-05 CHIP R 0 OHM J 1/16W
R32-34 RK73GB1J101J CHIP R 100 J 1/16W
R35 RK73GB1J223J CHIP R 22K J 1/16W
R37 RK73GB1J123J CHIP R 12K J 1/16W
R38 RK73GB1J273J CHIP R 27K J 1/16W
R43 RK73GB1J223J CHIP R 22K J 1/16W
R44 RK73GB1J472J CHIP R 4.7K J 1/16W
R46 RK73GB1J103J CHIP R 10K J 1/16W
R47 RK73GB1J123J CHIP R 12K J 1/16W
R50,51 RK73GB1J221J CHIP R 220 J 1/16W
R52 RK73GB1J104J CHIP R 100K J 1/16W
R53 RK73GB1J683J CHIP R 68K J 1/16W
R54 RK73GB1J104J CHIP R 100K J 1/16W
R55 RK73GB1J683J CHIP R 68K J 1/16W
R56,57 R92-1252-05 CHIP R 0 OHM J 1/16W
R58 RK73GB1J270J CHIP R 27 J 1/16W
R59 RK73GB1J683J CHIP R 68K J 1/16W
R60 RK73GB1J273J CHIP R 27K J 1/16W
R61 RK73GB1J104J CHIP R 100K J 1/16W
R64,65 RK73GB1J105J CHIP R 1.0M J 1/16W
R67 RK73GB1J222J CHIP R 2.2K J 1/16W
R68 RK73GB1J820J CHIP R 82 J 1/16W
R69 RK73GB1J821J CHIP R 820 J 1/16W
R71 RK73GB1J471J CHIP R 470 J 1/16W
R72 RK73GB1J101J CHIP R 100 J 1/16W
R73 RK73GB1J334J CHIP R 330K J 1/16W
R74,75 R92-1252-05 CHIP R 0 OHM J 1/16W
R77 RK73GB1J154J CHIP R 150K J 1/16W
R78 R92-1252-05 CHIP R 0 OHM J 1/16W
R80,81 R92-1252-05 CHIP R 0 OHM J 1/16W
R82 RK73GB1J472J CHIP R 4.7K J 1/16W
R83 RK73GB1J274J CHIP R 270K J 1/16W
R84 RK73GB1J151J CHIP R 150 J 1/16W
R85 RK73GB1J472J CHIP R 4.7K J 1/16W
R86 RK73GB1J122J CHIP R 1.2K J 1/16W
R87 RK73GB1J332J CHIP R 3.3K J 1/16W
R88 RK73GB1J681J CHIP R 680 J 1/16W
R89 RK73GB1J334J CHIP R 330K J 1/16W
R90 RK73GB1J473J CHIP R 47K J 1/16W
R91 RK73GB1J100J CHIP R 10 J 1/16W
R92 RK73GB1J153J CHIP R 15K J 1/16W
R95 RK73GB1J100J CHIP R 10 J 1/16W
R96 RK73GB1J222J CHIP R 2.2K J 1/16W
R97 R92-1252-05 CHIP R 0 OHM J 1/16W
R98 RK73GB1J101J CHIP R 100 J 1/16W
R99,100 R92-1252-05 CHIP R 0 OHM J 1/16W
R202 R92-1252-05 CHIP R 0 OHM J 1/16W
R220 RK73GB1J471J CHIP R 470 J 1/16W
R221 RK73GB1J182J CHIP R 1.8K J 1/16W
R222 RK73GB1J183J CHIP R 18K J 1/16W
R223 RK73GB1J102J CHIP R 1.0K J 1/16W
R224 RK73GB1J564J CHIP R 560K J 1/16W
R227 R92-1252-05 CHIP R 0 OHM J 1/16W
R228 RK73GB1J103J CHIP R 10K J 1/16W
R229 RK73GB1J223J CHIP R 22K J 1/16W
R230 RK73GB1J184J CHIP R 180K J 1/16W
R231 RK73GB1J562J CHIP R 5.6K J 1/16W
R232 RK73GB1J105J CHIP R 1.0M J 1/16W
R233 R92-1252-05 CHIP R 0 OHM J 1/16W
R234 RK73GB1J224J CHIP R 220K J 1/16W
R235 RK73GB1J473J CHIP R 47K J 1/16W
R238 RK73GB1J181J CHIP R 180 J 1/16W
R239 RK73GB1J394J CHIP R 390K J 1/16W
R240 RK73GB1J274J CHIP R 270K J 1/16W
R241,242 RK73GB1J331J CHIP R 330 J 1/16W
R243 RK73GB1J101J CHIP R 100 J 1/16W
R247 RK73GB1J392J CHIP R 3.9K J 1/16W
R248-251 RK73GB1J102J CHIP R 1.0K J 1/16W
R253 RK73GB1J101J CHIP R 100 J 1/16W
R256 RK73GB1J472J CHIP R 4.7K J 1/16W
R257 RK73GB1J473J CHIP R 47K J 1/16W
R261 RK73GB1J684J CHIP R 680K J 1/16W
R262 RK73GB1J393J CHIP R 39K J 1/16W
R263 RK73GB1J154J CHIP R 150K J 1/16W
R264,265 RK73GB1J333J CHIP R 33K J 1/16W
R266 RK73GB1J274J CHIP R 270K J 1/16W
R267 RK73GB1J822J CHIP R 8.2K J 1/16W
R269 RK73GB1J392J CHIP R 3.9K J 1/16W
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
TX-RX UNIT (X57-6672-70)

UBZ-LJ8
12
PARTS LIST
R270 R92-1252-05 CHIP R 0 OHM J 1/16W
R271 RK73GB1J223J CHIP R 22K J 1/16W
R272,273 RK73GB1J472J CHIP R 4.7K J 1/16W
R274 RK73GB1J122J CHIP R 1.2K J 1/16W
R275 RK73GB1J333J CHIP R 33K J 1/16W
R278 RK73GB1J153J CHIP R 15K J 1/16W
R279 RK73GB1J823J CHIP R 82K J 1/16W
R281 RK73GB1J333J CHIP R 33K J 1/16W
R284 RK73GB1J153J CHIP R 15K J 1/16W
R285 RK73GB1J124J CHIP R 120K J 1/16W
R286,287 RK73GB1J104J CHIP R 100K J 1/16W
R288 RK73GB1J154J CHIP R 150K J 1/16W
R289 RK73GB1J562J CHIP R 5.6K J 1/16W
R290 R92-1252-05 CHIP R 0 OHM J 1/16W
R291 RK73GB1J103J CHIP R 10K J 1/16W
R292 RK73GB1J562J CHIP R 5.6K J 1/16W
R293 RK73GB1J394J CHIP R 390K J 1/16W
R294 R92-1252-05 CHIP R 0 OHM J 1/16W
R295 RK73GB1J103J CHIP R 10K J 1/16W
R296 RK73GB1J222J CHIP R 2.2K J 1/16W
R297 RK73GB1J101J CHIP R 100 J 1/16W
R298 RK73GB1J473J CHIP R 47K J 1/16W
R299 RK73GB1J100J CHIP R 10 J 1/16W
R300-302 RK73GB1J102J CHIP R 1.0K J 1/16W
R303-307 RK73GB1J103J CHIP R 10K J 1/16W
R308 RK73GB1J102J CHIP R 1.0K J 1/16W
R310-312 RK73GB1J473J CHIP R 47K J 1/16W
R314 RK73GB1J472J CHIP R 4.7K J 1/16W
R315 RK73GB1J334J CHIP R 330K J 1/16W
R316 RK73GB1J102J CHIP R 1.0K J 1/16W
R317 RK73GB1J104J CHIP R 100K J 1/16W
R318 RK73GB1J103J CHIP R 10K J 1/16W
R319 RK73GB1J223J CHIP R 22K J 1/16W
R320 RK73GB1J820J CHIP R 82 J 1/16W
R321 RK73GB1J272J CHIP R 2.7K J 1/16W
VR1 R12-7490-05 TRIMMING POT. (47K)
VR3 R12-7491-05 TRIMMING POT. (68K)
VR4 R12-7488-05 TRIMMING POT. (22K)
VR201 2B ✽R31-0642-05 VARIABLE RESISTOR (10K)
S200 S70-0434-05 TACT SWITCH (PTT)
MIC200 1A T91-0555-05 MIC ELEMENT
D1 HVC131 DIODE
D2 1SV270 VARIABLE CAPACITANCE DIODE
D3 1SV214 VARIABLE CAPACITANCE DIODE
D4,5 MA2S111 DIODE
D8 HVC131 DIODE
D10 HSC277 DIODE
D11 RB706F-40 DIODE
D200 1SR154-400 DIODE
D202 DAN222 DIODE
D203,204 MA742 DIODE
D206 KDZ3.3V ZENER DIODE
D208 MA742 DIODE
D209,210 MA2S111 DIODE
IC1 TB31202FN MOS IC
IC2 TA31136FN MOS IC
IC202 ✽BD4724G MOS IC
IC203 LM4865M BI-POLAR IC
IC204 TC75S51F MOS IC
IC206 ✽BD4730G MOS IC
IC207 TK71530ASCL MOS IC
IC208 ✽M38C24M6502HP MPU
IC209 AK2346 MOS IC
IC210 ✽AT24C01A10SI18 ROM IC
IC210 ✽CAT24WC01JI18 ROM IC
IC211 NJM2100V MOS IC
Q1 DTC114EE DIGITAL TRANSISTOR
Q2 2SC5066(O) TRANSISTOR
Q3 2SC4617(S) TRANSISTOR
Q4-6 2SC5108(Y) TRANSISTOR
Q7 ✽2SC5092 TRANSISTOR
Q8 ✽2SK3656 FET
Q9,10 3SK318 FET
Q11 KTC4082 TRANSISTOR
Q13 2SC4738(GR) TRANSISTOR
Q14 2SC5108(Y) TRANSISTOR
Q200 2SC4919 TRANSISTOR
Q201 2SC4738(GR) TRANSISTOR
Q210-212 DTA123JE DIGITAL TRANSISTOR
Q213 DTC114EE DIGITAL TRANSISTOR
Q215 DTA123JE DIGITAL TRANSISTOR
Q216 2SA1362(GR) TRANSISTOR
Q217,218 ✽CPH3413 FET
Q219 2SK1824 FET
Q220 2SC4617(S) TRANSISTOR
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
TX-RX UNIT (X57-6672-70)

UBZ-LJ8
13
EXPLODED VIEW
Parts with the exploded numbers larger than 700 are not supplied.
AB
1
2
3
23
2
5
22
26
12 MIC200
105
104
102
103
101
F
E
C
D
27
24
18
4
1
8
B
A
B
Ax2
A
17
14
VR201
F
700
Insulating sheet
701
Frame
702
Standard label
703
S/No. label
704
Model name plate
TX-RX unit
(A/2)
TX-RX unit
(B/2)
A M2 x 4.5 : N09-2291-05
B M2 x 14 : N80-2014-45
C:N14-0801-05
D ø4 (TW) : N17-1040-46
E M2 x 5 : N67-2005-46
F M2 x 4 : N30-2004-46
VR201 assy

UBZ-LJ8
14
PACKING
CD
1
2
3
UBZ-LJ8
20 Belf hook
(J29-0700-03)
7 Instruction manual
(B62-1669-10)
705 Packing fixture
706 Warranty card
707 Item carton case
Parts with the exploded numbers larger than 700 are not supplied.

UBZ-LJ8
15
Required Test Equipment
1. DC V.M and Tester (DVM)
1) High input impedance
2. RF VTVM (RF V.M)
1) Input impedance : 1MΩmin., 2pF max.
2) Voltage range : F.S = 10mV to 300V
3) Frequency range : 500MHz or more
3. Frequency Counter (f. counter)
1) Input sensitivity : Approx. 500mV
2) Frequency range : 500MHz or more
3) Measurement stability : 0.2ppm or less
4. DC Power Supply
1) Voltage : 0V to 10V, variable
2) Current : Approx. 1A
5. Power Meter
1) Measurement range : Approx. 1W
2) Input impedance : 50Ω
3) Frequency range : 500MHz or more
6. AF VTVM (AF V.M)
1) Input impedance : 1MΩor more
2) Voltage range : F.S = 1mV to 3V
2) Frequency range : 50Hz to 10kHz
7. AF Generator (AG)
1) Output frequency : 100Hz to 10kHz
2) Output voltage : 0.5mV to 1V
8. Linear Detector or Deviation meter
1) Frequency range : 500MHz or more
9. Distortion Meter
1) Frequency range : 30Hz to 100kHz
2) Input level : 50mV to 10Vrms
3) Measurement stability : 3% or less at 1kHz
10. SSG
1) Frequency range : 30 to 500MHz
2) Modulation : FM
3) Output level : –133dBm (0.05µV) to –13dBm (50.1mV)
11. Oscilloscope
1) Measurement range : DC to 30MHz
12. Dummy Load
1) 8Ω, 1W
ADJUSTMENT
Setting
1. Power voltage : DC 4.5V
Current protection : Approx. 300mA
2. Frequency
•Channel frequency (12.5kHz step) (MHz)
Channel TX frequency RX frequency
1 446.00625 446.00625
2 446.01875 446.01875
3 446.03125 446.03125
4 446.04375 446.04375
5 446.05625 446.05625
6 446.06875 446.06875
7 446.08125 446.08125
8 446.09375 446.09375
•Tone frequency (Hz)
No. Frequency No. Frequency No. Frequency
1 67.0 14 107.2 27 167.9
2 71.9 15 110.9 28 173.8
3 74.4 16 114.8 29 179.9
4 77.0 17 118.8 30 186.2
5 79.7 18 123.0 31 192.8
6 82.5 19 127.3 32 203.5
7 85.4 20 131.8 33 210.7
8 88.5 21 136.5 34 218.1
9 91.5 22 141.3 35 225.7
10 94.8 23 146.2 36 233.6
11 97.4 24 151.4 37 241.8
12 100.0 25 156.7 38 250.3
13 103.5 26 162.2
3. SSG standard modulation
(Mod : 1kHz, DEV : ±1.5kHz)

UBZ-LJ8
16
ADJUSTMENT
Jigs
Use jigs for repair or adjustment.
■Extension Cable (E30-3480-08)
■ ANT Cable (E30-3418-05)
Modify the cable as shown below.
■ Connection Jigs
Connect the extension cable as shown in the illustration
below.
Solder the ANT cable to the ANT terminal and GND on the
TX-RX unit (B/2).
Cut
CN200
CN1
TX-RX unit
(A/2)
TX-RX unit
(B/2)
Extension cable
(E30-3480-08)
TX-RX unit (A/2)
TX-RX unit (B/2)
ANT cable
GND
ANT
terminal
GND(–)
LCD
VCC(+) MODE POWER
UP
DOWN
PTT
EXT. SP/MIC
LV
VR3
L36
VR1
VR4 ANT
Adjustment Points
■TX-RX unit (B/2) ■TX-RX unit (A/2) Component side view
Component side view
VR1 : MAX deviation
VR3 : Reference oscillator frequency
VR4 : TX power adjustment
L36 : Quad coil adjustment
LV : VCO lock voltage terminal
VCC (+), GND (–) : External power supply terminal (Fasten it with an alligator clip.)

UBZ-LJ8
17
ADJUSTMENT
Adjustment Mode
■Storing the Adjustment Value for the CTCSS
Deviation, Battery Voltage Detection, Busy
(Squelch) Detection and VOX Gain Level
TX-RX unit
(A/2)
PTT
WRITE
GND
6. Adjust the value according to the instructions on each
item (Refer to “Adjustment instructions”).
7. After adjusting the data value, press the [PTT] key to store
the new data to the EEPROM (IC210). If you do not wish
to store the adjusted data value to EEPROM (IC210),
press the [MODE] key. No data will not be stored to the
EEPROM (IC210) and the old data is retained.
8. You can press the [REM1] key on the speaker-microphone
(if connected) to activate the Monitor function. (Please dis-
able the monitor function in the Battery voltage detection
menu.) The adjustment menu can be up or down by
pressing the [REM2] or [REM3] key.
9. To exit “Adjustment mode”, turn the transceiver OFF.
Note : Refer to the diagram on the page 18 to understand
how each adjustment can be performed.
■Adjustment Instructions
•CTCSS Deviation adjustment
1. After entering the CTCSS Deviation adjustment mode, se-
lect the values with [UP]/ [DOWN] keys. Then press [PTT]
key to write the new value to the EEPROM (IC210).
2. Press [PTT] keys again to transmit. Confirm the CTCSS
deviation is 0.35kHz. If the deviation is not 0.35kHz, per-
form step 1 again to select different value, then measure
the deviation.
3. Perform step 1 and 2 until you get the deviation value
0.35kHz.
•Battery voltage detection adjustment
Set the DC power supply voltage to 3.20V and connect the
cable to the transceiver.
•Busy (Squelch) detection adjustment
Set your SSG (Synthesized Signal Generator) values as fol-
lows.
Frequency : 446.00625MHz (CH1)
Modulation frequency : 1kHz
Frequency deviation : 1.5kHz
Signal output : –123dBm (0.158µV)
•VOX gain level adjustment
Set the initial VOX gain value to 3C (in hexadecimal).
■How to Store the Adjustment Value to the IC210
(EEPROM) on the TX-RX Unit (A/2)
If the adjustment data in IC210 is corrupted or the IC itself
is replaced for servicing, all the data must be re-adjusted and
stored as follows.
1. Turn the transceiver OFF.
2. Enter the adjustment mode by shorting the “WRITE” and
“GND” terminals, then press the [PTT] key and turn the
transceiver ON. After turning the transceiver ON, remove
the wire from the “WRITE” and “GND” terminals.
Note : You must preset the tone number to “24”(151.4Hz)
at the required channel prior to enter the adjustment
mode.
Otherwise, you cannot perform the “CTCSS Deviation”
adjustment.
3. The adjustment menu appears. It begins with “CTCSS
Deviation” adjustment.
4. The adjustment menu changes when you press the [UP]
or [DOWN] key.
5. Press the [MODE] key to enter the selected adjustment
menu. The adjustment value appears on the LCD and
blinks.

UBZ-LJ8
18
CTCSS
deviation
[DOWN]
[DOWN]
[UP]
[DOWN]
[UP]
[DOWN]
[UP]
[UP]
Battery
voltage
detection
Busy
(Squelch)
detection
VOX gain
level
[MODE] for CTCSS
deviation output
[MODE] to read
AD level
Press [PTT] to
write in new value
Press [PTT] to
write in new value
[MODE] to read
AD level
Press [PTT] to
write in new value
[MODE] to read
AD level
Press [PTT] to
write in new value
Must off receiver.
Press [MODE] key to cancel writing the value
to the EEPROM (IC210).
Press [MODE] key to cancel writing the value
to the EEPROM (IC210).
Press [MODE] key to cancel writing the value
to the EEPROM (IC210).
Press [MODE] key to cancel writing the value
to the EEPROM (IC210).
Press [UP]/[DOWN] keys to adjust the CTCSS
deviation adjustment value.
Press [PTT] key to confirm the deviation.
You must set the tone number to
“24” (151.4Hz) prior to the measurement.
Blink
Blink
Blink
Blink
Press [UP]/[DOWN] keys to adjust
the VOX gain level.
Note :
•PLL unlock status is not examined while in Adjustment
Mode.
•The transmission time is not limited in Adjustment Mode.
•The lamp function is not available in Adjustment Mode.
•The Key Lock function forces the transceiver to exit Ad-
justment Mode.
•You cannot set the Beep function OFF while in Adjust-
ment Mode (the transceiver always beeps).
■Adjustment Mode Flow Chart
ADJUSTMENT

UBZ-LJ8
19
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment Unit Terminal PartsUnit Method
ADJUSTMENT
PLL Section
1. VCO lock voltage 1) 4CH : 446.04375MHz DVM TX-RX LV Check 0.7~2.7V
RX (B/2)
TX 2) 4CH : 446.04375MHz
PTT : ON
2. Reference 1) 4CH : 446.04375MHz Power meter TX-RX ANT TX-RX VR3 446.04375MHz ±100Hz
oscillator PTT : ON f. counter (B/2) (B/2)
frequency
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment Unit Terminal PartsUnit Method
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment Unit Terminal PartsUnit Method
1. TX power 1) 1CH : 446.00625MHz Power meter TX-RX ANT TX-RX VR4 500mW ±10mW
and current PTT : ON Ammeter (B/2) (B/2) Current check 500mA or less
2. MAX 1) 1CH : 446.00625MHz
Power meter TX-RX ANT VR1 2.0kHz ±0.05kHz
deviation AG : 1kHz/100mV Linear (B/2) According to the
PTT : ON detector TX-RX MIC larger +, –.
(A/2)
3. MIC 1) 1CH : 446.00625MHz AG Check 1.2~1.9kHz
sensitivity AG : 1kHz/5mV AF V.M
PTT : ON
4. CTCSS 1) Enter the adjustment mode, Linear TX-RX ANT [UP], Write the new 0.35kHz±0.05kHz
deviation then write the CTCSS detector (B/2) [DOWN] adjustment value
deviation level. by pushing [PTT].
1CH : 446.00625MHz
Tone No. : 24 (151.4Hz)
PTT : ON
2) Tone No. : 38 (250.3Hz) Check 0.25~0.40kHz
PTT : ON
1. Quad-coil 1) 4CH : 446.04375MHz SSG TX-RX ANT TX-RX L36 Maximum AC level 0.9V or more
adjustment SSG output : –53dBm (501µV) (B/2) (B/2) (peak to peak) using
SSG MOD : 1kHz Oscilloscope TX-RX SP oscilloscope
SSG DEV : 1.5kHz DVM (A/2)
AF VOL : 10 o’clock position
2. Sensitivity 1) 4CH : 446.04375MHz SSG TX-RX ANT Check SINAD : 20dB or more
SSG output : –115dBm (0.398µV) (B/2)
SSG MOD : 1kHz Distortion TX-RX SP
SSG DEV : 1.5kHz meter (A/2)
AF VOL : 0.63V/8Ω Oscilloscope
CCITT filter : ON AF V.M
3. Squelch 1) 4CH : 446.04375MHz SSG TX-RX ANT Check Squelch open
SSG output : –116dBm (0.35µV) (B/2)
2) SSG output : –127dBm (0.1µV) Oscilloscope TX-RX SP Squelch close
AF V.M (A/2)
4. BATT 1) BATT terminal DC power TX-RX VCC (+) LCD check or light on
: DC 3.35V±0.01V supply (A/2) GND (–)
2) BATT terminal DVM or lignt on
: DC 3.80V±0.01V
Transmitter Section
Receiver Section

20
ABCDEFGH I J
1
2
3
4
5
6
7
8
9
10
11
12
13
14
MIC200
R235
R239
C201
R240
C206
SP+
SP–
GND
(–)
C208
C209
C210
C211
C212
C234
C235
C236
C237
C239
C240
R293
R299
D200
D209
D210
IC202
1
1 2
3
34
5
O
G
I
IC203
1 45
8
IC207
C292
C293
R316
R321
C300
C303
C305
F200
Q211
Q212
Q216
Q217
D
G
S
Q219
D
G
S
Q220
VCC
(+)
+
+
J72-0869-09 A/2
DOWN
+
MODE
+
–
UBZ-LJ8 PC BOARD
TX-RX UNIT (X57-6672-70) (A/2) Component side view (J72-0869-09 A/2)
Ref. No. Address
IC202 11G
IC203 4G
IC207 11F
IC209 7M
Q201 7K
Q210 11K
Q211 9G
Ref. No. Address
Q212 11J
Q213 3O
Q215 11L
Q216 5G
Q217 3F
Q218 11O
Q219 3J
Ref. No. Address
Q220 4H
D200 11E
D203 7L
D205 4P
D208 3K
D209 4F
D210 4F
DTA123JE
DTC114EE
KTC4082
2SA1362
2SC4617
2SC4738
2SC5066
2SC5108
2SC5092 2SC4919 MA742