Toa S5.5-RX A1 User manual

TABLE OF CONTENTS
Update history
S5.5-RX
1
No.833-73-817-20
UHF WIRELESS TUNER
S5.5-RX A1, B2, C1, D3
HS0910
NOTE ON REPAIR WORK SAFETY ......................................................................................................... 2
SPECIFICATIONS ..................................................................................................................................... 2
NOMENCLATURE AND SET-UP .............................................................................................................. 3
BLOCK DIAGRAM ..................................................................................................................................... 4
SCHEMATIC DIAGRAMS
• MAIN PCB ........................................................................................................................................... 5
• LED PCB ............................................................................................................................................. 9
MOUNTING DIAGRAMS AND PARTS LIST
• MAIN PCB ......................................................................................................................................... 10
• PARTS LIST (MAIN PCB) ................................................................................................................. 10
• LED PCB ........................................................................................................................................... 14
• PARTS LIST (LED PCB) ................................................................................................................... 14
EXPLODED VIEW AND PARTS LIST ..................................................................................................... 15
TABLE OF CONTENTS

S5.5-RX
2NOTE ON REPAIR WORK SAFETY 2SPECIFICATIONS
• Accessories
Power Source AC mains (supplied AC adapter must be used)
Power Consumption 300 mA (13 V DC)
Receiving Frequency 692 - 852 MHz (*2), UHF
Channel Selectable 10 banks, 24 frequencies max / bank (the number of channels may differ
from country to country)
Receiving System Double super-heterodyne
Diversity System Space diversity (true diversity)
Audio Output XLR-3-32 type connector
LINE: -22dB(*1), 600 Ω, balanced
MIC: -62dB(*1), 600 Ω, balanced
Phone jack
-28 dB(*1), 600 Ω, unbalanced
Antenna Input 75 Ω, BNC
Antenna Phantom Power 9 V DC, 30mA (max)
Receiving Sensitivity Under 0 dBμV (12 dB SINAD)
Squelch Sensitivity 6 - 36 dBμV variable
Squelch System Using together of noise SQ, carrier SQ and tone SQ
Tone Frequency 32.768 kHz
Indicator LCD, Power lamp, Mute lamp, ANT A/B lamp,
S/N Ratio Over 110dB (A weight)
Harmonic Distortion Under 1% (typical)
Frequency Response 50 Hz - 20 kHz, +-3 dB
Function Audio Low-cut, High-boost and phase reverse
Battery indicator (7steps)
Headphone output
Infra-Red link port
Channel check
Monitoring software with USB connectivity
Operating Temperature -10°C to +50°C (14°F to 122°C)
Finish Chassis: steal, dark gray, painting
Front panel: aluminum, silver, almite
Dimensions 210(W) x 46(H) x 210(D) mm
Weight 1.3kg
AC adapter (*3) ......................................................... 1
Wireless Antenna ...................................................... 2
Rack mount kit ........................................................ 11
(*1)
0 dB = 1 V
Follow the instructions below, both to prevent accidents when making repairs and to ensure post-repair
product safety.
Do not apply voltages other than those specified for the equipment or its compo-
nents.
Applying voltages other than the rated voltage could cause electrical breakdown or over-current, possi-
bly resulting in electric shock or fire.
Use specified parts and components.
Be sure to use only specified parts when replacing parts indicated by the mark in the circuit dia-
gram or parts list. Because such parts have been designed for safety in terms of their incombustibility
and dielectric strength, using parts other than those specified could result in a fire.
After replacing parts, be sure to return the new parts and any other affected parts
to their previous configuration.
Check that all screws, parts, and wiring removed or changed during servicing have been restored to
their original states. Also, confirm that no damage has occurred around the serviced area.
Do not modify the design of circuit boards or other electronic elements.
Modifying circuit boards could cause electric shock or result in a fire hazard due to excessive heat
build-up. User modification automatically exempts the manufacturer from all personal and property lia-
bility caused by such modification, and the user who carried out such modification shall be solely
responsible for such accidents.
Since lead can become an environmental contaminant, this unit has been manufactured using solders
that contain no lead in the printed circuit board.
[While conventional solders are alloys of zinc and lead, lead-free solder is comprisend of an alterna-
tive alloy that contains no lead.]
NOTES
• Circuit boards using lead-free solder bear a lead-free solder designation. To maintain the integrity
of this designation, be sure to use lead-free solder when repairing such lead-free solder circuit
boards. Boards not marked with the lead-free solder designation may legally be serviced using
conventional solders.
• Because the melting point of lead-free solder (approximately 220°C) is 30°C-40°C higher than that
of conventional (lead-zinc alloy) solder, it tasks little longer to melt. It is recommended that a sol-
dering iron with controllable temperature be used and set to 20°C higher than would normally be
used with conventional solder.
Identifying printed circuit boards that use free-lead solder
Printed circuit boards that use lead-free solder have the following designation printed or stamped on
either side of the board.
• About lead-free solders
NOTE ON REPAIR WORK SAFETY SPECIFICATIONS
Type Frequency Range(*2) AC Adapter(*3)
A1 692 - 722 MHz, UHF 120 V AC, 60 Hz
B2 740 - 752 MHz, UHF –
C1 794 - 830 MHz, UHF 230 V AC, 50 Hz
D3 830 - 865 MHz, UHF 230 V AC, 50 Hz

NOMENCLATURE AND SET-UP
S5.5-RX
3 3
NOMENCLATURE AND SET-UP
1. Attach the supplied antennae (2) to the rear panel TNC antenna connectors as shown in above illustra-
tion.
2. Connect the AC/DC adaptor into the DC inlet as marked on the rear panel using the attached cable strain
relief. Observe the front panel on-off switch surround is illuminated red.
3. Connect the rear panel AF output from either the 1/4" Jack or XLR to your mixing console or amplifier.
Note: the XLR balanced output can be switched for either mic or line. The system can be also monitored
from the headphone socket using the "Jog-Wheel" to adjust Volume level.
4. Switch On-Off switch to "On" position and the receiver will default to initial setting as per illustration above.
(BK1.01)
The system is now ready for use.
Rear View
Front View
DC inlet 1/4” jack output
DC strain relief Mic/Line switch
USB port XLR output
Diversity switch A/B indicators
Infra-red port
Power switch indicator
Power On/Off
LCD
Jog wheel
Mute indicator
Headphone output

1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
4 4
BP filter
(DF1)
BP filter
(DF3)
1st
Mixer
RF Amp
(TR1)
BP filter
(DF2)
PLL
(IC3)
VCO SW
(TR5)
Loop FIlter
10 MHz Ref
(Y3)
VCO RF Amp
(TR6)
LPF
LPF
BP filter 2nd
Mixer
45.175MHz
BP filter IF Amp BP filter 10.7 Demod
1st
Mixer
RF Amp
(TR23)
BP filter
(DF4) BP filter 2nd Mixer BP filter IF Amp BP filter 10.7 Demod
uP
Encoder
Display
usb interface
IR Interface
CHA AF Buf
CHB AF Buf
Comparator AF Switch Mute Sw Lo-cut Phase invert Compander
LPF De-emphasis High boost
Noise Mute
Tone Mute
Battery monitor
Headphone Amp
Phantom A
PSU
Phantom B
PSU
XLR
output terminal
Powerup mute AF Amp mic/line SW
DC PSU
USB Type B
10V Supply
5V Supply
PSU
DC Jack
Dev Bar Vu Bar
RSSI A
RSSI B
Memory
Microprocessor interface bus
Microprocessor interface bus
PHONEJACK
Antenna A
Antenna B
TNC
TNC
DIODE protection
PHONEJACK
BLOCK DIAGRAM
1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
BLOCK DIAGRAM

1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
5 5
PHANTOM_ENABLE
AUDIO_A
RSSI_A
u_OSC1_OUT
SYNTH_CLK
SYNTH_DAT
SYNTH_EN
LCD_CONTRAST_PWM
LCD_CONTRAST AUDIO_B
PHANTOM_ENABLE
RSSI_B
WP
SCL
SDA
DEV_METER
UART_PWM
IR_TX
IR_TXAND HEAD_CLOCK
VU_METER
UP_DOWN
u_OSC1_IN
A_SWITCH
CHAN_A_LED_CL
5V_D CHAN_B_LED_CL u_OSC1_OUT
LCD_CONTRAST
DISPLAY_RS
DISPLAY_RW CHAN_B_LED
DISP_ENABLE CHAN_A_LED AUDIO_A
RD0
RD1
RD2
RD3
RD4 5V_D
RD5 RD0 RD1
RD6 CHAN_B_LED RD2
RD7 CHAN_A_LED RD3
5V_D PWM RD4
LCD_LED_A ENCODE_SWITCH RD5
ROL_REDLED ROL_LED RD6
ROL_GRNLED DATA_LED RD7
QUAD_A
QUAD_B
ENCODE_SWITCH
IR_TXBUF
CHAN_A_LED_CL
CHAN_B_LED_CL
ROL_POWGRN
ROL_POWRED
TONE_MUTE SDA
DISP_ENABLE SCL
NOISE_MUTE SYNTH_EN
LCD_LED_A USB_TX SYNTH_DAT
USB_RX SYNTH_CLK
LCD_CONTRAST_PWM HEAD_CLOCK
MCLR RB6
UART_PWM
u_OSC1_OUT
5V_D u_OSC1_IN
UP_DOWN 5V_D
PHANTOM_ENABLE RB7
USB_RTS QUAD_B
USB_CTS QUAD_A
B_SWITCH LO_CUT
A_SWITCH WP
QUAD_B
QUAD_A
ENCODE_SWITCH
PHASE_INVERT
AUDIO_B LO_CUT
MASTER_MUTE
HI_BOOST
MASTER_MUTE
5V_D IR_TX
MCLR DISPLAY_RS
DEV_METER DISPLAY_RW
VU_METER PHASE_INVERT
RSSI_A HI_BOOST
RSSI_B 5V_D NOISE_MUTE
MCLR
5V_D
RB7 DATA_LED
RB6
B_SWITCH
IR_TXAND
5V_D
IR_TXBUF
USB_RX
USB_RTS
5V_D 5V_A TONE_MUTE
USB_TX
5V_D
USB_CTS
USBDM
USBDP
USB_VCC
ROL_POWGRN
USB_VCC
USBDM
USBDP
ROL_POWRED
ROL_LED
ROL_REDLED
PWM
ROL_GRNLED
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
10V
12V
10V
10V
10V
10V
10V
10V
10V
2.5VREF
2.5VREF
10V
10V
10V
10V
10V
10V
10V 10V
5V_A
5V_D
5V_A
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_D
5V_D
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_A 5V_A
5V_A
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_D
5V_A
2.5VREF
10V
10V
5V_D
5V_D
5V_D
5V_D
5V_D
10V
5V_A
5V_A
J1
BNC
R1
100
C1
10n
R2
10K
IC1
LM7805
IN
1OUT 3
GND 2
IC2
LM2940
IN
1OUT 3
GND 2
C3
22u_E
+C4
22u_E
+
C5
10p
C6
100p
C9
1n
R3 1K8 IC3
LMX2316
FL
1
CP
2
GND
3
GND
4
FIN
5
FIN
6
VCC
7
OSC
8GND 9
CE 10
CLOCK 11
DATA 12
LE 13
LD 14
VCC 15
VP 16
C10
10n R4
18
C12
100p
C13
330p
C14
330p
R5
150
R6
15K
R7
15K
C15
330p
C16
330p
R9
22K
R10
100
R11
330
R12
1K
R13
4K7
C18
100p
C19
5p
C20
100n
L1
FSLU-82n
R15
15r_1206
L2
LL1608-6N8
C22
6p
C23
1n
L3
LL1608-12N
R19
330
C24
1n
C25
1n
R20
15K
C26
DNP
C27
4p C28 7p
TR1
2SC5085
R21
10K
C29
1n
R22
22K
R23
560
L4
LL1608-180N
L5
LL1608-6N8
L6
0r
C32
DNP
C33
DNP
C34
56P
C35
56p
L7
LL1608-100N
C36
1N TR2
2SC4399
R25
27K
C37
1n
R26
56
R27
560
C38
10n
R28
4K7
C39
100p
R29
10K
C40
10n
C41
10n
R30
100
C42
100p
C43
100p
C44
10n
C45
10n
C46
10n
R31
2K2
C47
10n R32
470 C48
10n
IC5
LA1225
IFI 1
REG 2 GND 3
SLVL 4
VCC 5
AFO
6
DET
7
IFO
8
STRQ
9
SD
10
R33
330
C49
10n
R34
4K7
C50
10n
R35
100
C51
10n
C52
10n
C53
100n C54
10n R36
15K
R37
47K
CD1
107DISCRIM
2
1
TR5
2SC4555
R39
27K
C57
1n
TR6
2SC5085
R40
470
C58
1n
R41
220
C59
10n
C60
100p
C62
DNP
C63
7p
C64
4p
C65
8p
C66
4p
TR7
2SC5085
L8
LL1608-10n L9 LL1608-10n
C67
22p
C68
10n
TR8
2SC4399
C69
1n
C70
33p
R43
150K
Y1
45.175MHz
R44
270
R45
1K8
C71
1n
C72
1n
R46
220
R47
470
R48
2K2
R50 2K2
R51 2K2
R52
47
R53
47
C75
10u_ELEC
+
R54
10K
C76
100p
TR9
2SC4555
R55
10K
R56
10K
C77
100p
R57
10K
R58
100
R60
10K
R61
100
TR11
2SC4555
C78
22u_ELEC
+
C79
22u_ELEC
+
IC6
PIC18F8722
RH2
1
RH3
2
RE1
3
RE0
4
RG0
5
RG1
6
RG2
7
RG3
8
MCLR
9
RG4
10
GND
11
VDD
12
RF7
13
RF6
14
RF5
15
RF4
16
RF3
17
RF2
18
RH7
19
RH6
20
RH5 21 RH4 22
RF1 23
RF0 24
AVDD 25
AVSS 26
RA3 27
RA2 28 RA1 29 RA0 30
GND 31 VDD 32
RA5 33 RA4 34 RC1 35 RC0 36 RC6 37 RC7 38
RJ4 39 RJ5 40
RJ6 41
RJ7 42
RC2 43
RC3 44
RC4 45
RC5 46
RB7 47
VDD 48
OSC1 49
OSC2 50
GND 51
RB6 52
RB5 53
RB4 54
RB3 55
RB2 56
RB1 57
RB0 58
RJ3 59
RJ2 60
VRZ
61
RJ0
62
RD7
63
RD6
64
RD5
65
RD4
66
RD3
67
RD2
68
RD1
69
GND
70
VDD
71
RD0
72
RE7
73
RE6
74
RE5
75
RE4
76
RE3
77
RE2
78
RH0
79
RH1
80
C80
DNP
R63
10K
C81
DNP
R64
10K
R65
10K
R66
470
R67
10K
D2
BAV99W
1
2
3
R68
10K
JP2
MPLAB_SOCK
1
2
3
4
5
6
R69
10K
R70
100
R73
100K
R74
100K
C82
4u7_ELEC
+R75
DNP
IC7
FT232RL
TXD
1
DTR
2
RTS
3
VCCIO
4
RXD
5
RI
6
GND
7
NC
8
DSR
9
DCD
10
CTS
11
CBUS4
12
CBUS2
13
CBUS3
14 USBDP 15
USBDM 16
3V3OUT 17
GND 18
RESET 19
VCC 20
GND 21
CBUS1 22
CBUS0 23
NC 24
AGND 25
TEST 26
OSC1 27
OSCI 28
C83
100n
C84
100n
CON1
USB_TYPEB
1
2
3
4
C85
10n
R76
1K2
IC8A
2904
+
-
3
2
1
8
4
R78
10K_POT
R79
10K
C86
220p
C87
10u_ELEC
+
C88
10u_ELEC
+
R82
390
R83
1K
C89
10n
C90
1N
C92
7p
R84
1K8
C93
330n
C94
330n
C95
4u7_ELEC
+
C97
47p
C99
10u_ELEC
+
R86
150K
R87
100K_POT
R88
DNP
IC9A
4580
+
-
3
2
1
8 4
R89
47K
R90
47K
R91
47K
C103
10u_ELEC
+
R93
150K
R94
100K_POT
R95 DNP
R96
47K
IC10A
2904
+
-
3
2
1
C105
220n
R97
100K
C106
220n
C107
220n
IC11A
4066
1 2
13
R100
100K
R101
100K
C108
47u_ELEC
+
C109
22n
R102
100K
IC11B
4066
11 10
12
R103
100
C110
100n
R104
82K
IC12A
4580
+
-
3
2
1
8 4
C111
100n
R105
22K
R109
10K
R111
10K
C114
47p
R112
1K
IC11C
4066
4 3
5
C115
4u7_ELEC
+
R113
47K R114
47K
IC11D
4066
8 9
6
R115
10K
R117
10K
R118
10K
R120
15K
C116
100n
R121
1K
C117
DNP
R122
12K
R123
12K
R124
12K
C118
220p
C119
1n
IC14
SA575DK
+OP1 1
-OP1 2
OUT OP1 3
RECT1 IN 4
RECT1 5
OUT1 6
COMP1 I/P 7
VREF 8
GC1 I/P 9
GND 10 GC2 I/P
11
SUM2 O/P
12
COMP2 I/P
13
OUT2
14
RECT2
15
RECT2 IN
16
OUT OP2
17
-OP2
18
+OP2
19
VCC
20
C120
4u7_M
C121
1u_M
R126
1M
R127
10K
R128
470
R129
1K
C124
47n
C125
DNP
R131
DNP
R132
47K
R133
47K
D4
BAV99W
1
2
3
C126
100n
R135
10K
C127
220n
R136
22K
C128
2u2_ELEC
+
R137
22K
R138
47K
R139
100
R142
47K R143
10K
C130
10u_ELEC
+
R147
100K
R148
10K
R149
1K
R150
47K
C131
10u_ELEC
+
C132
10u_ELEC
+
R151
12K
TR14
2SC4555
C133
1n
C134
1n C135 1n
R152
3K9
R153
56K
R154
4K7
TR15
KTC4075
R155
47K
R156
1K5 C136 1n
C137
10p
D6
BAV99W
1
2
3
R159
2K2
C138
12p Y2
32.768KhZ
R161
270K
IC15B
4580
+
-
5
6
7
8 4
R162
22K
C139
10n R164
2K2
R165
10K
TR16
KTC4075
R166
10K
C140
10n
R167
4K7
C141
2u2_ELEC
+
TR17
KTC4075
C142
2u2_ELEC
+
C143
220p C144 220p
R168
15K
TR18
KTC4075
C145
1n
TR19
KTC4075
R170
680K
C146
10n
R171
12K
C147
10n R172
1K
D7
BAV99W
1 2
3
R173
10K
C148
10n
C149
330n
TR20
KTC4075
R174
4K7
R175
4K7
C150
10n
R176
100K
TR21
KTC4075
TR22
KTC4075
R177
100K
R178
100K
L12
LL1608-6N8
C151
6p
C152
1n
L13
LL1608-12N
R180
330 C153
1n
C154
1n
R181
15K
C155
DNP
C156
4p
C157
7p
TR23
2SC5085
R182
10K
C158
1n
R183
22K
R184
560
L15
LL1608-6N8
L16
0r
C161
DNP
C162
DNP
C163
56P
C164
56p
L17
LL1608-100N
C165
1N
TR24
2SC4399
R186
27K
C166
1n
R187
56
R188
560
C167
10n
R189
4K7
R190
10K
C168
10n
C169
10n
R191
100
C170
100p
C171
100p
C172
10n
C173
10n
C174
10n
R192
2K2
C175
10n
R193
470 C176
10n
IC16
LA1225
IFI 1
REG 2 GND 3
SLVL 4
VCC 5
AFO
6
DET
7
IFO
8
STRQ
9
SD
10
R194
330
C177
10n
R195
4K7
C178
10n
R196
100
C179
10n
C180
10n
R197
47K
CD2
107DISCRIM
21
C181
7p
TR27
2SC5085
IC8B
2904
+
-
5
6
7
84
R198
10K_POT
R199
10K
C182
220p
C183
10u_ELEC
+
C184
10u_ELEC
+
R201
DNP
R202
390
R203
1K
C185
10n
C186
1N
C187
47p
R204
220
R205
470
C188
4p
C189
8p
C190
4p
L18
LL1608-10n
L19
LL1608-10n
C191
100p
C192
100n
C193
10n R206
15K
C194
3p
J5
BNC
R208
330
R209
1K
R210
4K7
L20
FSLU-82n
R211
15r_1206
R212
10K
C197
3p
TR29
KTC4075
TR31
KTC4075
TR32
KTC4075
C198
22p
Y3
10MHz_SM
OSC1
1
GND
2OSC2 3
GND 4
C199
3-10pF
R214
10K
TR33
KTC4075
R216
10K
TR34
KTC4075
R217
10K
R218
10
T5
TONETRAP
1
1
2
2
3
344
55
66
IC18
LM4811
VOUT1
1
VIN1
2
BYPASS
3
CLOCK
4
GND
5UP/DOWN 6
SHUTDOWN 7
VIN2 8
VOUT2 9
VCC 10
R220
10K
C202
220n
C204
10u_ELEC
+
C205
10u_ELEC
+
SAW1
MKFC55_875
IN
1
GND
2
GND
3OUT 4
GND 5
GND 6
SAW2
MKFC55_875
IN
1
GND
2
GND
3OUT 4
GND 5
GND 6
C206
1n
R224
1K8
R225
180K R226 100K
R227
180K R228
100K
C210
47p
TR36
KTC4075
R232
10K
IC20A
4580
+
-
3
2
1
84
IC20B
4580
+
-
5
6
7
84
C213
47u_ELEC
+C214
47u_ELEC
+
C215
10u_ELEC
+
TR37
KTC4075
TR38
KTC4075
R234
47K
R235
47K
R236
270K
R237 150K
R238
10K
R239
10K_POT
IC21
LM7805
IN
1OUT 3
GND 2
C218
22u_E
+
R241
1K
R242
10K
L27
DIVCOIL_D
1
C91
10u_ELEC
+
C209
10u_ELEC
+
C211
100u_ELEC
+
C212
100u_ELEC
+
C123
22u_ELEC
+
C2
220u_ELEC
+
CON2
DC-J
1
2
C219
100n
S2
IC22
TC4S66F
IN_OUT
1
OUT_IN
2
GND
3CONT 4
VCC 5
R130
10K
C203
220n
C220
100p
C221
100p
C100
1uF_M
C104
1uF_M
R125
DNP
C122
1u_M
D5
BAV99W
1
2
3
XLR1
XLR_D
3
21
T3
BALUN_D
T1
BALUN_D
TR30
KTC4075
R110
10K
HEADER1
1
1
HEADER1
1
1
S1
D8
1SR139
J3
PHONEJACK_D
CAN1
wt500rfcan
TR3
FH102
TR25
FH102
C30
10n
C222
1n
L14
LL1608-180N
C223
1n
C159
10n
L10
820n
CAN2
DIVSHIELD
C96
4u7_T
+
IC4A
4066_5V
1 2
13
IC4B
4066_5V
11 10
12
IC4C
4066_5V
4 3
5
IC4D
4066_5V
8 9
6
CF3
SFE10M7KA00
2
1 3
CF4
SFE10M7KA00
2
1 3
CF2
SFE10M7KA00
2
1 3
CF1
SFE10M7KA00
2
1 3
C224
100n
C225
100n
C226
100n
C227
100n
C228
100n
C229
100n
IC9B
4580
+
-
5
6
7
84
C230
100n
C231
100n
IC12B
4580
+
-
5
6
7
8 4
C232
100n
C233
100n
C216
10n
IC15A
4580
+
-
3
2
1
84
R157
220K
IC19B
4580
+
-
5
6
7
8 4
C234
100n
C235
100n
IC10B
2904
+
-
5
6
7
C236
100n
T4
BALUN
T2
BALUN
C17
10u_ELEC
+
D3
RED_LEDSM
R240
1206
JP1
55ribbon
11
22
33
44
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
IC23
KIA10V
IN
1OUT 3
GND 2
IC24
KIA5V
IN
1OUT 3
GND 2
IC25
KIA5V
IN
1OUT 3
GND 2
IC26
24LC16
A0
1
A1
2
A2
3
GND
4SDA 5
SCL 6
WP 7
5V 8
IC27A
4011
1
2
3
IC27B
4011
5
6
4
R253
DNP R254
0r
R255
DNP
IC27D
4011
12
13
11
IC27C
4011
8
9
10
C237
100n
TR28
2SD1622
TR35
2SD1622
TR12
KTA2014
TR40
KTC4075
TR39
KTA2014
R258
10K
TR42
KTC4075
R14
22K
TR4
2SC4399
R260
200r_POT
TR26
2SC4399
R261
200r_POT
R85
33K
C98
18p
R92
33K
C102
18p
R263
10K
R264
10K
C101
22u_ELEC
+
R247
1K2
R169
3K9
R215
22K
R116
22K
R141
56K
R140
100K
R8
18K
R145
10K C238
1n
C239
1n
R219
10K
C240
10uF_ELEC
+
R221
100K
D9
BAV99W
1
2
3
R49
4K7 C73
680p
R59
DNP
R62
DNP
TR10
KTA2014
D1
BAV99W
1
2
3
C241
10u_ELEC
+
R163
4K7
C217
680p
R158
2K2
R17
1uF_M
R16
1uF_M
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINTTESTPOINT
11 11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
C242
100n
C74
1n5
C112
0r
C113
DNP
+
R233
DNP
R108
DNP
R107
DNP
R106
DNP
C243
10n
L29 600r@100MHz
L30
600r@100MHz
J4
HEADPHONE_D
L28
600r@100MHz
TESTPOINT
1
1
R250
DNP
R251
DNP
R244
1K2
R243
10K
R207
0R
L23
DNP
1
L22
DNP
1
L21
DNP
1
C21
DNP
J2
DNP
R18
8r2 R24
8r2
C31
22p
C160
22p
R185
8r2
R179
8r2
R213
0r
L24
DNP
1
L25
DNP
1
L26
DNP
1
C196
DNP
J6
DNP
R265
0r
R256
1K
R77
DNP
R248
56r_1206
R246
470r_1206
R245
470r_1206
C129
220n
R160
220K
IC13A
MC33078
+
-
3
2
1
8 4
IC13B
MC33078
+
-
5
6
7
84
R222
DNP
R146
DNP
R223
100K
R119
15K
R71
2K2
R72
2K2
C200
10p
R229
22K
R230
22K
R231
DNP
R134
150K
R259
100
R262
100
TR13
KTA2014
R266
1K
R267
1K
C201
1uF_M
R144
10K
R268
100
C208
47u_ELEC
+
C195
1n
R252
22K
R80
100K
R200
100K
C245
DNP
C244
DNP
R99
220K
R98
47K
DF1
MB33P-808
BPF
1
3
2
DF2
MB33P-808
BPF
1
3
2
DF3
MB33P-808
BPF
1
3
2
DF4
MB33P-808
BPF
1
3
2
VCO1
MVE774
VCC
1
GND
2
VT
3MOD 4
GND 5
OUT 6
C7
1n
R81
DNP
C207
10u_ELEC
+
R249
DNP
C11
1n
IC19A
4580
+
-
3
2
1
8 4
C8
22p
L11
LL1608-3n3
C56
100p
R38
100
C55
2r2
Type
C
VC01
DF1,2,3,4 MBF705
AB D
MBF735 MBF812 MBF848
MVE664 MVE664 MVE774 MVE774
To LED PCB
JP1
USB port
DC inlet
Power switch
jack output
XLR output terminal
VCO
switch
mic/line
switch
Headphone output
Antenna B
BP filter BP filter
RF
amplifier
BP filter
PLL
RF amplifier
BP filter
RF
amplifier
Antenna A
10MHz Ref
Note: “ “ represents the ground on the circuit board.
Section B
For the enlarged view,
see p. 7.
Section C
For the enlarged view,
see p. 8.
Section A
For the enlarged view,
see p. 6
SCHEMATIC DIAGRAMS
SCHEMATIC DIAGRAMS
• MAIN PCB

SCHEMATIC DIAGRAMS
1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
6 6
PHANTOM_ENABLE
AUDIO_A
RSSI_A
u_OSC1_OUT
SYNTH_CLK
SYNTH_DAT
SYNTH_EN
LCD_CONTRAST_PWM
LCD_CONTRAST AUDIO_B
PHANTOM_ENABLE
RSSI_B
10V
10V
10V
5V_A
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_A 5V_A
5V_A
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_D
5V_A
J1
BNC
R1
100
C1
10n
R2
10K
C5
10p
C6
100p
C9
1n
R3 1K8 IC3
LMX2316
FL
1
CP
2
GND
3
GND
4
FIN
5
FIN
6
VCC
7
OSC
8GND 9
CE 10
CLOCK 11
DATA 12
LE 13
LD 14
VCC 15
VP 16
C10
10n R4
18
C12
100p
R10
100
R11
330
R12
1K
R13
4K7
C18
100p
C19
5p
C20
100n
L1
FSLU-82n
R15
15r_1206
L2
LL1608-6N8
C22
6p
C23
1n
L3
LL1608-12N
R19
330
C24
1n
C25
1n
R20
15K
C26
DNP
C27
4p C28 7p
TR1
2SC5085
R21
10K
C29
1n
R22
22K
R23
560
L4
LL1608-180N
L5
LL1608-6N8
L6
0r
C32
DNP
C33
DNP
C34
56P
C35
56p
L7
LL1608-100N
C36
1N TR2
2SC4399
R25
27K
C37
1n
R26
56
R27
560
C38
10n
R28
4K7
C39
100p
R29
10K
C40
10n
C41
10n
R30
100
C42
100p
C43
100p
C44
10n
C45
10n
C46
10n
R31
2K2
C47
10n R32
470 C48
10n
IC5
LA1225
IFI 1
REG 2 GND 3
SLVL 4
VCC 5
AFO
6
DET
7
IFO
8
STRQ
9
SD
10
R33
330
C49
10n
R34
4K7
C50
10n
R35
100
C51
10n
C52
10n
C53
100n C54
10n R36
15K
R37
47K
CD1
107DISCRIM
2
1
TR5
2SC4555
R39
27K
C57
1n
TR6
2SC5085
R40
470
C58
1n
R41
220
C59
10n
C60
100p
C62
DNP
C63
7p
C64
4p
C65
8p
C66
4p
TR7
2SC5085
L8
LL1608-10n L9 LL1608-10n
C67
22p
C68
10n
TR8
2SC4399
C69
1n
C70
33p
R43
150K
Y1
45.175MHz
R44
270
R45
1K8
C71
1n
C72
1n
R46
220
R47
470
R66
470
R67
10K
C85
10n
R76
1K2
IC8A
2904
+
-
3
2
1
8
4
R78
10K_POT
R79
10K
C86
220p
C87
10u_ELEC
+
C88
10u_ELEC
+
R82
390
R83
1K
C89
10n
C90
1N
C92
7p
R84
1K8
C93
330n
C94
330n
C95
4u7_ELEC
+
C97
47p
L12
LL1608-6N8
C151
6p
C152
1n
L13
LL1608-12N
R180
330 C153
1n
C154
1n
R181
15K
C155
DNP
C156
4p
C157
7p
TR23
2SC5085
R182
10K
C158
1n
R183
22K
R184
560
L15
LL1608-6N8
L16
0r
C161
DNP
C162
DNP
C163
56P
C164
56p
L17
LL1608-100N
C165
1N
TR24
2SC4399
R186
27K
C166
1n
R187
56
R188
560
C167
10n
R189
4K7
R190
10K
C168
10n
C169
10n
R191
100
C170
100p
C171
100p
C172
10n
C173
10n
C174
10n
R192
2K2
C175
10n
R193
470 C176
10n
IC16
LA1225
IFI 1
REG 2 GND 3
SLVL 4
VCC 5
AFO
6
DET
7
IFO
8
STRQ
9
SD
10
R194
330
C177
10n
R195
4K7
C178
10n
R196
100
C179
10n
C180
10n
R197
47K
CD2
107DISCRIM
21
C181
7p
TR27
2SC5085
IC8B
2904
+
-
5
6
7
84
R198
10K_POT
R199
10K
C182
220p
C183
10u_ELEC
+
C184
10u_ELEC
+
R201
DNP
R202
390
R203
1K
C185
10n
C186
1N
C187
47p
R204
220
R205
470
C188
4p
C189
8p
C190
4p
L18
LL1608-10n
L19
LL1608-10n
C191
100p
C192
100n
C193
10n R206
15K
C194
3p
J5
BNC
R208
330
R209
1K
R210
4K7
L20
FSLU-82n
R211
15r_1206
R212
10K
C197
3p
TR29
KTC4075
TR31
KTC4075
TR32
KTC4075
SAW1
MKFC55_875
IN
1
GND
2
GND
3OUT 4
GND 5
GND 6
SAW2
MKFC55_875
IN
1
GND
2
GND
3OUT 4
GND 5
GND 6
C206
1n
R224
1K8
R225
180K R226 100K
R227
180K R228
100K
L27
DIVCOIL_D
1
C91
10u_ELEC
+
C220
100p
C221
100p
T3
BALUN_D
T1
BALUN_D
TR30
KTC4075
HEADER1
1
1
HEADER1
1
1
CAN1
wt500rfcan
TR3
FH102
TR25
FH102
C30
10n
C222
1n
L14
LL1608-180N
C223
1n
C159
10n
L10
820n
CAN2
DIVSHIELD
C96
4u7_T
+
CF3
SFE10M7KA00
2
1 3
CF4
SFE10M7KA00
2
1 3
CF2
SFE10M7KA00
2
1 3
CF1
SFE10M7KA00
2
1 3
T4
BALUN
T2
BALUN
C237
100n
TR28
2SD1622
TR35
2SD1622
R14
22K
TR4
2SC4399
R260
200r_POT
TR26
2SC4399
R261
200r_POT
R17
1uF_M
R16
1uF_M
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
R250
DNP
R251
DNP
R207
0R
L23
DNP
1
L22
DNP
1
L21
DNP
1
C21
DNP
J2
DNP
R18
8r2 R24
8r2
C31
22p
C160
22p
R185
8r2
R179
8r2
R213
0r
L24
DNP
1
L25
DNP
1
L26
DNP
1
C196
DNP
J6
DNP
R256
1K
R259
100
R262
100
R266
1K
R267
1K
C195
1n
R80
100K
R200
100K
C245
DNP
C244
DNP
DF1
MB33P-808
BPF
1
3
2
DF2
MB33P-808
BPF
1
3
2
DF3
MB33P-808
BPF
1
3
2
DF4
MB33P-808
BPF
1
3
2
VCO1
MVE774
VCC
1
GND
2
VT
3MOD 4
GND 5
OUT 6
C7
1n
R81
DNP
C207
10u_ELEC
+
R249
DNP
C11
1n
C8
22p
L11
LL1608-3n3
C56
100p
R38
100
C55
2r2
WP
SCL
SDA
5V_D
IC26
24LC16
A0
1
A1
2
A2
3
GND
4SDA 5
SCL 6
WP 7
5V 8
R252
22K
Antenna B
BP filter BP filter
RF
amplifier
BP filter
PLL
RF amplifier
BP filter
RF
amplifier
Antenna A
Note: “ “ represents the ground on the circuit board.
• MAIN PCB (Section A)

SCHEMATIC DIAGRAMS
1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
7 7
UART_PWM
IR_TX
IR_TXAND
u_OSC1_IN
A_SWITCH
CHAN_A_LED_CL
5V_D CHAN_B_LED_CL u_OSC1_OUT
LCD_CONTRAST
DISPLAY_RS
DISPLAY_RW CHAN_B_LED
DISP_ENABLE CHAN_A_LED AUDIO_A
RD0
RD1
RD2
RD3
RD4 5V_D
RD5 RD0 RD1
RD6 CHAN_B_LED RD2
RD7 CHAN_A_LED RD3
5V_D PWM RD4
LCD_LED_A ENCODE_SWITCH RD5
ROL_REDLED ROL_LED RD6
ROL_GRNLED DATA_LED RD7
QUAD_A
QUAD_B
ENCODE_SWITCH
IR_TXBUF
CHAN_A_LED_CL
CHAN_B_LED_CL
ROL_POWGRN
ROL_POWRED
TONE_MUTE SDA
DISP_ENABLE SCL
NOISE_MUTE SYNTH_EN
LCD_LED_A USB_TX SYNTH_DAT
USB_RX SYNTH_CLK
LCD_CONTRAST_PWM HEAD_CLOCK
MCLR RB6
UART_PWM
u_OSC1_OUT
5V_D u_OSC1_IN
UP_DOWN 5V_D
PHANTOM_ENABLE RB7
USB_RTS QUAD_B
USB_CTS QUAD_A
B_SWITCH LO_CUT
A_SWITCH WP
QUAD_B
QUAD_A
ENCODE_SWITCH
PHASE_INVERT
AUDIO_B LO_CUT
MASTER_MUTE
MASTER_MUTE
5V_D IR_TX
MCLR DISPLAY_RS
DEV_METER DISPLAY_RW
VU_METER PHASE_INVERT
RSSI_A HI_BOOST
RSSI_B 5V_D NOISE_MUTE
MCLR
5V_D
RB7 DATA_LED
RB6
B_SWITCH
IR_TXAND
5V_D
IR_TXBUF
USB_RX
USB_RTS
5V_D 5V_A TONE_MUTE
USB_TX
5V_D
USB_CTS
USBDM
USBDP
USB_VCC
ROL_POWGRN
USB_VCC
USBDM
USBDP
ROL_POWRED
ROL_LED
ROL_REDLED
PWM
ROL_GRNLED
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
12V
10V
10V
10V
2.5VREF
2.5VREF
10V
10V 10V
5V_A
5V_D
5V_D
5V_D
5V_A
5V_A
5V_A
5V_A
5V_A
5V_A
5V_A 5V_A
5V_A
5V_A
5V_A
5V_A
5V_D
5V_A
10V
5V_D
5V_D
5V_D
10V
IC1
DNP
IN
1OUT 3
GND 2
IC2
DNP
IN
1OUT 3
GND 2
C3
22u_E
+C4
22u_E
+
C13
330p
C14
330p
R5
150
R6
15K
R7
15K
C15
330p
C16
330p
IC6
PIC18F8722
RH2
1
RH3
2
RE1
3
RE0
4
RG0
5
RG1
6
RG2
7
RG3
8
MCLR
9
RG4
10
GND
11
VDD
12
RF7
13
RF6
14
RF5
15
RF4
16
RF3
17
RF2
18
RH7
19
RH6
20
RH5 21 RH4 22
RF1 23
RF0 24
AVDD 25
AVSS 26
RA3 27
RA2 28 RA1 29 RA0 30
GND 31 VDD 32
RA5 33 RA4 34 RC1 35 RC0 36 RC6 37 RC7 38
RJ4 39 RJ5 40
RJ6 41
RJ7 42
RC2 43
RC3 44
RC4 45
RC5 46
RB7 47
VDD 48
OSC1 49
OSC2 50
GND 51
RB6 52
RB5 53
RB4 54
RB3 55
RB2 56
RB1 57
RB0 58
RJ3 59
RJ2 60
VRZ
61
RJ0
62
RD7
63
RD6
64
RD5
65
RD4
66
RD3
67
RD2
68
RD1
69
GND
70
VDD
71
RD0
72
RE7
73
RE6
74
RE5
75
RE4
76
RE3
77
RE2
78
RH0
79
RH1
80
C80
DNP
R63
10K
C81
DNP
R64
10K
R65
10K
D2
BAV99W
1
2
3
R68
10K
JP2
MPLAB_SOCK
1
2
3
4
5
6
R69
10K
R70
100
R73
100K
R74
100K
C82
4u7_ELEC
+R75
DNP
IC7
FT232RL
TXD
1
DTR
2
RTS
3
VCCIO
4
RXD
5
RI
6
GND
7
NC
8
DSR
9
DCD
10
CTS
11
CBUS4
12
CBUS2
13
CBUS3
14 USBDP 15
USBDM 16
3V3OUT 17
GND 18
RESET 19
VCC 20
GND 21
CBUS1 22
CBUS0 23
NC 24
AGND 25
TEST 26
OSC1 27
OSCI 28
C83
100n
C84
100n
CON1
USB_TYPEB
1
2
3
4
C99
10u_ELEC
+
R86
150K
R87
100K_POT
R88
DNP
IC9A
4580
+
-
3
2
1
84
R89
47K
R90
47K
R91
47K
C103
10u_ELEC
+
R93
150K
R94
100K_POT
R95 DNP
R96
47K
IC10A
2904
+
-
3
2
1
C105
220n
R97
100K
C106
220n
C107
220n
IC11A
4066
1 2
13
R100
100K
R101
100K
C108
47u_ELEC
+
C109
22n
R102
100K
IC11B
4066
11 10
12
R103
100
C110
100n
R104
82K
IC12A
4580
+
-
3
2
1
8 4
C111
100n
R105
22K
R109
10K
R111
10K
C114
47p
R112
1K
IC11C
4066
4 3
5
C115
4u7_ELEC
+
R113
47K R114
47K
IC11D
4066
8 9
6
R115
10K
R117
10K
R118
10K
R120
15K
C116
100n
R121
1K
C117
DNP
R122
12K
R123
12K
C133
1n
C134
1n C135 1n
R152
3K9
R153
56K
R154
4K7
TR15
KTC4075
R155
47K
R156
1K5 C136 1n
C137
10p
D6
BAV99W
1
2
3
R159
2K2
C138
12p Y2
32.768KhZ
R161
270K
IC15B
4580
+
-
5
6
7
8 4
R162
22K
C139
10n R164
2K2
R165
10K
TR16
KTC4075
R166
10K
C140
10n
R167
4K7
C141
2u2_ELEC
+
TR17
KTC4075
C142
2u2_ELEC
+
C143
220p C144 220p
R168
15K
TR18
KTC4075
C145
1n
TR19
KTC4075
R170
680K
C146
10n
R171
12K
C147
10n R172
1K
D7
BAV99W
1 2
3
R173
10K
C148
10n
C149
330n
TR20
KTC4075
R174
4K7
R175
4K7
C150
10n
R176
100K
TR21
KTC4075
TR22
KTC4075
R177
100K
R178
100K
C198
22p
Y3
10MHz_SM
OSC1
1
GND
2OSC2 3
GND 4
C199
3-10pF
R214
10K
TR33
KTC4075
R216
10K
TR34
KTC4075
R217
10K
R218
10
T5
TONETRAP
1
1
2
2
3
344
55
66
TR37
KTC4075
TR38
KTC4075
R234
47K
R235
47K
R236
270K
R237 150K
R238
10K
R239
10K_POT
IC21
DNP
IN
1OUT 3
GND 2
C218
22u_E
+
R241
1K
R242
10K
C2
220u_ELEC
+
CON2
DC-J
1
2
C219
100n
S2
C100
1uF_M
C104
1uF_M
R110
10K
D8
1SR139
IC4A
4066_5V
1 2
13
IC4B
4066_5V
11 10
12
IC4C
4066_5V
4 3
5
IC4D
4066_5V
8 9
6
C224
100n
C225
100n
C226
100n
C227
100n
C228
100n
C229
100n
IC9B
4580
+
-
5
6
7
84
C230
100n
C231
100n
IC12B
4580
+
-
5
6
7
8 4
C232
100n
C233
100n
C216
10n
IC15A
4580
+
-
3
2
1
8 4
R157
220K
C235
100n
IC10B
2904
+
-
5
6
7
D3
RED_LEDSM
R240
DNP
JP1
55ribbon
11
22
33
44
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
IC23
µPC2410AHF
IN
1OUT 3
GND 2
IC24
KIA5V
IN
1OUT 3
GND 2
IC25
KIA5V
IN
1OUT 3
GND 2
IC27A
4011
1
2
3
IC27B
4011
5
6
4
R253
DNP R254
0r
R255
DNP
IC27D
4011
12
13
11
IC27C
4011
8
9
10
TR12
KTA2014
TR40
KTC4075
TR39
KTA2014
R258
10K
TR42
KTC4075
R85
33K
C98
18p
R92
33K
C102
18p
R263
10K
R264
10K
C101
22u_ELEC
+
R247
1K2
R169
3K9
R215
22K
R116
22K
R163
4K7
C217
680p
R158
2K2
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINT
11
TESTPOINTTESTPOINT
11 11
TESTPOINT
11
TESTPOINT
11
C112
0r
C113
DNP
+
R233
DNP
R108
DNP
R107
DNP
R106
DNP
TESTPOINT
1
1
R244
1K2
R243
10K
R265
0r
R77
DNP
R248
56r_1206
R246
470r_1206
R245
470r_1206
R160
220K
R119
15K
R71
2K2
R72
2K2
C200
10p
R268
100
R99
220K
R98
47K
IC19A
4580
+
-
3
2
1
8 4
To LED PCB
JP1
USB port
DC inlet
Power switch
10MHz Ref
Note: “ “ represents the ground on the circuit board.
• MAIN PCB (Section B)

SCHEMATIC DIAGRAMS
1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
8 8
DEV_METER
HEAD_CLOCK
VU_METER
UP_DOWN
HI_BOOST
10V
10V
10V
10V
10V
10V
10V
5V_A
5V_A
5V_A
2.5VREF
10V
5V_A
R9
22K
R48
2K2
R50 2K2
R51 2K2
R52
47
R53
47
C75
10u_ELEC
+
R54
10K
C76
100p
TR9
2SC4555
R55
10K
R56
10K
C77
100p
R57
10K
R58
100
R60
10K
R61
100
TR11
2SC4555
C78
22u_ELEC
+
C79
22u_ELEC
+
R124
12K
C118
220p
C119
1n
IC14
SA575DK
+OP1 1
-OP1 2
OUT OP1 3
RECT1 IN 4
RECT1 5
OUT1 6
COMP1 I/P 7
VREF 8
GC1 I/P 9
GND 10 GC2 I/P
11
SUM2 O/P
12
COMP2 I/P
13
OUT2
14
RECT2
15
RECT2 IN
16
OUT OP2
17
-OP2
18
+OP2
19
VCC
20
C120
4u7_M
C121
1u_M
R126
1M
R127
10K
R128
470
R129
1K
C124
47n
C125
DNP
R131
DNP
R132
47K
R133
47K
D4
BAV99W
1
2
3
C126
100n
R135
10K
C127
220n
R136
22K
C128
2u2_ELEC
+
R137
22K
R138
47K
R139
100
R142
47K R143
10K
C130
10u_ELEC
+
R147
100K
R148
10K
R149
1K
R150
47K
C131
10u_ELEC
+
C132
10u_ELEC
+
R151
12K
TR14
2SC4555
IC18
LM4811
VOUT1
1
VIN1
2
BYPASS
3
CLOCK
4
GND
5UP/DOWN 6
SHUTDOWN 7
VIN2 8
VOUT2 9
VCC 10
R220
10K
C202
220n
C204
10u_ELEC
+
C205
10u_ELEC
+
C210
47p
TR36
KTC4075
R232
10K
IC20A
4580
+
-
3
2
1
84
IC20B
4580
+
-
5
6
7
84
C213
47u_ELEC
+C214
47u_ELEC
+
C215
10u_ELEC
+
C209
10u_ELEC
+
C211
100u_ELEC
+
C212
100u_ELEC
+
C123
22u_ELEC
+
IC22
TC4S66F
IN_OUT
1
OUT_IN
2
GND
3CONT 4
VCC 5
R130
10K
C203
220n
R125
DNP
C122
1u_M
D5
BAV99W
1
2
3
XLR1
XLR_D
3
21
S1
J3
PHONEJACK_D
IC19B
4580
+
-
5
6
7
8 4
C234
100n
C236
100n
C17
10u_ELEC
+
R141
56K
R140
100K
R8
18K
R145
10K C238
1n
C239
1n
R219
10K
C240
10uF_ELEC
+
R221
100K
D9
BAV99W
1
2
3
R49
4K7 C73
680p
R59
DNP
R62
DNP
TR10
KTA2014
D1
BAV99W
1
2
3
C241
10u_ELEC
+
TESTPOINT
11
TESTPOINT
11
C242
100n
C74
1n5
C243
10n
L29 600r@100MHz
L30
600r@100MHz
J4
HEADPHONE_D
L28
600r@100MHz
C129
220n
IC13A
MC33078
+
-
3
2
1
8 4
IC13B
MC33078
+
-
5
6
7
84
R222
DNP
R146
DNP
R223
100K
R229
22K
R230
22K
R231
DNP
R134
150K
TR13
KTA2014
C201
1uF_M
R144
10K
C208
47u_ELEC
+
jack output
XLR output
VCO
switch
Mic/Line
switch
Headphone output
Note: “ “ represents the ground on the circuit board.
• MAIN PCB (Section C)

GN D
5V_D
LC D_CONTRAST RO L_POWRED
DISPLAY_ RS
DISP LAY_RW
DISP_ENAB LE
RD 0
RD 1 GN D
RD 2
RD 3
RD 4
RD 5
RD 6
RD 7 ROL_ POWGRN
5V_D
LCD_LE D_A
ROL_R EDLED
ROL_GRN LED
QUA D_A GN D
QUAD_ B
ENCODE_SWITCH
IR_TXBU F
CHAN_A_LE D_CL
CHAN_B _LED_CL
ROL_ POWGRN ROL_R EDLED
RO L_POWRED
GN D
ENCODE_SWITC H ROL_GRN LED
GN D
QUAD _B
GND
IR_TXB UF
CHAN_A_L ED_CL
CHAN_ B_LED_CL
QU AD_A
GND
5V_ D
GND
LCD_CONTRAST
DISPLAY _RS
DISP LAY_RW
DISP_ENAB LE
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
LCD_L ED_A
LCD_L ED_A
GND
GND
ENC 1
E27
SELECT
1
2
3
5
4
D1
RE D_LED
D2
RED_LED
D3
IR_ LED
JP1
55 RIBBON
11
22
33
44
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
JP3
HEA DER5
1
2
3
4
5
JP2
HEAD ER7x2
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
D1 1
GREEN_LED
D1 0
GREEN_LED
D9
RED_LED
D8
RED_LED
D6
GREEN_LED
D7
GREEN_LED
D4
RED_LED
D5
RED_LED
To MAIN PCB
JP1
To LCD display
To LCD display
SCHEMATIC DIAGRAMS
1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
9 9
• LED PCB

MOUNTING DIAGRAMS AND PARTS LIST
1
A
B
C
D
E
F
G
H
23 654 789 11121310
I
S5.5-RX
10 10
MOUNTING DIAGRAMS AND PARTS LIST
Antenna AAntenna B XLR output DC inlet USB port
Mic/Line
switch
jack output
Power switch
Headphone output
• MAIN PCB Type Part Code Description
A1 Z3340 PCB ASSY, MAIN S55RX-A11
B2 Z3349 PCB ASSY, MAIN S55RX-B2
C1 Z3341 PCB ASSY, MAIN S55RX-C11
D3 Z3342 PCB ASSY, MAIN S55RX-D3
• PARTS LIST (MAIN PCB)
Designator Part Code Description
C1 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C2 113-32-981-6X CAPACITOR, MVK 35VC 220M J10
C3 113-42-389-5X CAPACITOR,MVJ35VC22MF F60
C4 113-42-389-5X CAPACITOR,MVJ35VC22MF F60
C5 113-40-628-3X CAPACITOR, U0603C100JNT
C6 113-40-640-5X CAPACITOR,U0603C101JNT
C7 D13-40-032-6X CAPACITOR,U0603C102JNT
C8 113-40-632-0X CAPACITOR,U0603C220JNT
C9 D13-40-032-6X CAPACITOR,U0603C102JNT
C10 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C11 D13-40-032-6X CAPACITOR,U0603C102JNT
C12 113-40-640-5X CAPACITOR,U0603C101JNT
C13 113-40-646-1X CAPACITOR,U0603C331JNT
C14 113-40-646-1X CAPACITOR,U0603C331JNT
C15 113-40-646-1X CAPACITOR,U0603C331JNT
C16 113-40-646-1X CAPACITOR,U0603C331JNT
C17 113-32-978-2X CAPACITOR,J 16VC 10M D60
C18 113-40-640-5X CAPACITOR,U0603C101JNT
C19 113-40-623-8X CAPACITOR,U0603C050CNT
C20 113-40-676-0X CAPACITOR,B0603R104KNT
C21 --- DUMMY
C22 113-40-624-5X CAPACITOR,U0603C060DNT
C23 D13-40-032-6X CAPACITOR,U0603C102JNT
C24 D13-40-032-6X CAPACITOR,U0603C102JNT
C25 D13-40-032-6X CAPACITOR,U0603C102JNT
C26 --- DUMMY
C27 113-40-622-3X CAPACITOR, U0603C040CNT
C28 113-40-625-4X CAPACITOR, U0603C070DNT
C29 D13-40-032-6X CAPACITOR,U0603C102JNT
C30 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C31 113-40-632-0X CAPACITOR, U0603C220JNT
C32 --- DUMMY
C33 --- DUMMY
C34 113-40-637-5X CAPACITOR, U0603C560JNT
C35 113-40-637-5X CAPACITOR, U0603C560JNT
C36 D13-40-032-6X CAPACITOR,U0603C102JNT
C37 D13-40-032-6X CAPACITOR,U0603C102JNT
C38 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C39 113-40-640-5X CAPACITOR,U0603C101JNT
C40 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C41 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C42 113-40-640-5X CAPACITOR,U0603C101JNT
C43 113-40-640-5X CAPACITOR,U0603C101JNT
C44 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C45 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C46 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C47 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C48 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C49 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C50 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C51 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C52 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C53 113-40-676-0X CAPACITOR,B0603R104KNT
C54 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C55 112-80-305-8X RESISTOR,1608 2.2OHM(J) TAPING
C56 113-40-640-5X CAPACITOR,U0603C101JNT
C57 D13-40-032-6X CAPACITOR,U0603C102JNT
C58 D13-40-032-6X CAPACITOR,U0603C102JNT
C59 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C60 113-40-640-5X CAPACITOR,U0603C101JNT
C62 --- DUMMY
C63 113-40-625-4X CAPACITOR,U0603C070DNT
C64 113-40-622-3X CAPACITOR,U0603C040CNT
C65 113-40-626-5X CAPACITOR,U0603C080DNT
C66 113-40-622-3X CAPACITOR,U0603C040CNT
C67 113-40-632-0X CAPACITOR,U0603C220JNT
C68 113-40-664-5X CAPACITOR,1608 50V 10NF TAP
C69 D13-40-032-6X CAPACITOR,U0603C102JNT
C70 113-40-634-2X CAPACITOR,U0603C330JNT
C71 D13-40-032-6X CAPACITOR,U0603C102JNT
*The parts not listed are not supplied.