Yaesu FT-277R User manual

1FT-277R Technical Supplement
©2010 VERTEX STANDARD CO., LTD. EH022U91A
Technical Supplement
Specifications ....................................................................................................................................................................2
Exploded View & Miscellaneous Parts .......................................................................................................................3
Block Diagram ..................................................................................................................................................................5
Circuit Description ..........................................................................................................................................................7
Alignment ..........................................................................................................................................................................9
Board Units (Schematics, Layouts & Parts)
Main Unit................................................................................................................................................................... 13
FTD-7 DTMF Paging Unit (Option) ........................................................................................................................ 31
Introduction
This manual provides the technical information necessary for servicing the FT-
277R UHF FM Transceiver.
Servicing this equipment requires expertise in handing surface-mount chip compo-
nents. Attempts by non-qualified persons to service this equipment may result in
permanent damage not covered by the warranty, and may be illegal in some coun-
tries.
Two PCB layout diagrams are provided for each double-sided board in this trans-
ceiver. Each side of the board is referred to by the type of the majority of compo-
nents installed on that side (“Side A” or “Side B”). In most cases one side has only
chip components (surface-mount devices), and the other has either a mixture of
both chip and leaded components (trimmers, coils, electrolytic capacitors, ICs, etc.),
or leaded components only.
While we believe the information in this manual to be correct, VERTEX STANDARD
assumes no liability for damage that may occur as a result of typographical or other
errors that may be present. Your cooperation in pointing out any inconsistencies in
the technical information would be appreciated.
Contents
FT-277R
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong
VERTEX STANDARD (AUSTRALIA)PTY., LTD.
Normanby Business Park, Unit 14/45 Normanby Road
Notting Hill 3168, Victoria, Australia
Important Note
The transceiver was assembled using Pb (lead) free solder, based on the RoHS
specification.
Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used
for repairs performed on this apparatus. The solder stated above utilizes the
alloy composition required for compliance with the lead-free specification,
and any solder with the above alloy composition may be used.

2FT-277R Technical Supplement
Specifications
General
Frequency Ranges: RX 430 - 440 MHz or 400 - 480 MHz
TX 430 - 440 MHz or 430 - 450 MHz
Channel Steps: 5/10/12.5/15/20/25/50/100 kHz
Frequency Stability: ±5 ppm @ 14° to 140° F (–10° to +60° C)
Repeater Shift: ±5 MHz, ±7.6 MHz, or ±1.6 MHz
Emission Type: F2D , F3E, F2A
Antenna Impedance: 50 Ω
Supply Voltage: Nominal: 7.2 V DC
(Negative Ground) Operating: 6.0 ~ 16.0 V DC (EXT DC Jack)
11.0 ~ 16.0 V DC (EXT DC Jack with Charging)
Current Consumption: 165 mA (Receive, 200 mW output)
(Approx. @7.2 V) 47 mA (Standby, Saver Off)
19.5 mA (Standby, Saver On)
8 mA (Auto Power Off)
2.0 A (5 W TX)
Operating Temperature: –4° to 140° F (–20 °C to +60 °C)
Case Size: 2.36” (W) x 4.72” (H) x 1.26” (D) (60 x 120 x 32 mm)
(W/O knob, antenna, & belt clip)
Weight: 13.8 Oz (390 g) with FNB-83, antenna, and belt clip
Transmitter
RF Power Output: 5.0 W (High) / 2.0 W (Middle) / 0.5 W (Low) (@7.2 V)
Modulation Type: Variable Reactance F2D, F3E
Maximum Deviation: ±5.0 kHz (F2D, F3E)
Spurious Emission: – 60 dB or better (@ High and Middle power)
– 40 dB or better (@ Low power)
Microphone Impedance: 2 kΩ
Receiver
ircuit Type: Double-Conversion Superheterodyne
Intermediate Frequencies: 1st: 47.25 MHz
2nd: 450 kHz
Sensitivity: 0.3 µV for 12 dB SINAD (400 - 420 MHz )
0.2 µV for 12 dB SINAD (420 - 470 MHz )
0.25 µV for 12 dB SINAD (470 - 480 MHz )
Selectivity: 12 kHz/35 kHz (–6 dB /–60 dB)
AF Output: 800 mW @ 16 Ωfor 10 % THD (Internal Speaker)
(@ 7.5 V) 450 mW @ 8 Ωfor 10 % THD (EXT SP Jack)
Specifications are subject to change without notice, and are guaranteed within the 430 MHz amateur band only. Frequency
ranges will vary according to transceiver version; check with your dealer.

3FT-277R Technical Supplement
Exploded View & Miscellaneous Parts






G6090166
LCD
M3290029
MIC. ELEMENT
RA058040A
LIGHT GUIDE
RA0580700
INTER CONNECTOR
RA0578200
MIC HOLDER RUBBER
CP8517003
PANEL ASSY (FT-277R)
CP8516001
REAR CASE ASSY
RA0577600
EXT CAP
RA0304300
WASHER
RA1113400
KNOB
RA1113300
KNOB
RA008890A
O RING
RA108700B
KNOB SCREW
RA046760A
O RING
RA061740B
PACKING PAD
RA057800A
RUBBER PACKING
RA055770C
LATCH NAIL
RA0337300
SHEET
RA070930A
MASK SHEET
RA1113600
RUBBER KNOB
RA0580500
REFLECTOR SHEET
RA0578300
WASHER
RA057840A
RING NUT
RA057730B (x2 pcs)
SPACER
RA0577400 (x2 pcs)
TERMINAL









RA1203900
WINDOW (FT-277R)
RA057710A
HOLDER
RA057700A
RUBBER KNOB
RA111430A
DOUBLE FACE
RA0434100
SHEET
M4090185A
SPEAKER
RA0607200
SHEET PORON
MAIN-Unit
RA1084700
O RING
RA057720B
LIGHT GUIDE
RA1113200
PANEL (FT-277R)
RA0557900
SP NET
RA0748900
O RING
RA1063700
SPACER
Ref.





VXSTD P/N
U9900068
U9900181
U24110002
U9900035
U07240202
Description
TAPTITESCREW M2X4NI#3
TAPTITESCREW 2X3.5(CAP)
TAPTITE SCREW M2X10NI
TAPTITE SCREW M2X3 #1
PAN HEAD SCREW M2X4NI#2
Qty.
11
1
2
2
2
Non-designated parts are available
only as part of a designated assembly.
RA1127500
NAME PLATE (YAESU)
RA008920C
O RING
RA0087900
SPECIAL NUT

4FT-277R Technical Supplement
Exploded View & Miscellaneous Parts
Note

5
Block Diagram
FT-277R Technical Supplement

6
Block Diagram
FT-277R Technical Supplement
Note

7FT-277R Technical Supplement
Circuit Description
Receive Signal Path
Incoming RF signal is from the antenna jack is delivered
to the Main Unit and passed through the low-pass filter
network, antenna switching diode D1003 and D1004
(both RLS135), and low-pass filter network to the RF
amplifier Q1022 (3SK296ZQ). The amplified RF signal is
passed through band-pass filtered again by varactor-
tuned band-pass filter consisting of coils L1024, L1025,
and L1026, and diodes D1017, D1018, and D1019 (all
HVC350B), then applied to the 1st mixer Q1023
(3SK296ZQ) along with the first local signal from the PLL
circuit.
The first local signal is generated between 382.75 MHz
and 402.75 MHz by the VCO, which consists of Q1014
(2SC5006)and varactor diodes D1009 (HVC350B), D1010
(HVC375B) and D1011 (HSC277) according to the receiv-
ing frequency.
IF and Audio Circuits
The 47.25 MHz first IF signal is applied to the monolithic
crystal filter XF1001 which strip away unwanted mixer
products, and the IF signal is applied to the first IF ampli-
fier Q1024 (2SC4915). The amplified first IF signal is then
delivered to the FM IF subsystem IC Q1004 (NJM2591V),
which contains the second mixer, limiter amplifier, noise
amplifier, and FM detector.
The 46.8 MHz second local signal which is made from
quadrupled 11.7 MHz crystal X1002 produces the 450 kHz
second IF signal when mixed with first IF signal within
Q1004 (NJM2591V).
The 450 kHz second IF signal is applied to the ceramic
filter CF1002 which strip away unwanted mixer prod-
ucts to the ceramic discriminator CD1001 which removes
any amplitude variations in the 450 kHz IF signal before
detection of speech.
The detected audio from the Q1004 (NJM2591V) is ap-
plied to a band-pass filter consisting of Q1081 and Q1082
(both 2SC4617), then passes through the audio mute gate
Q1052 (2SC4617) and Q1045 (DTC144EE).
The audio signal is passed through the audio VR which
adjusts the audio sensitivity to compensate for audio level
variations, then delivered to the audio amplifier Q1008
(TDA2822D).
Squelch Control
When no carrier received, noise at the output of the de-
tector stage in Q1004 (NJM2591V) is applied to pin 49 of
main CPU Q1001 (HD64F2266TF13), which compares the
squelch threshold level to that which set by the SQL knob.
While no carrier is received, pin 71 of Q1001
(HD64F2266TF13) remains “low,” to disable audio out-
put from the speaker.
Transmit Signal Path
The speech signal from the microphone is amplified by
Q1074 (LM2902PWR). The amplified speech signal is sub-
jected to the low-pass filter network Q1074 (LM2902PWR)
and deviation controller Q1075 (DTC144EE).
UHF Transmit Signal Path
The adjusted speech signal from Q1075 (DTC144EE) is
delivered to VCO Q1014 (2SC5006) which frequency
modulates the transmitting VCO made up of D1010
(HVC375B).
The modulated transmit signal passes through buffer
amplifier Q1013 and Q1012 (both 2SC5006).
The transmit signal applied to the Pre-Drive amplifier
Q1011 (2SC5006) and Drive amplifier Q1010 (2SK2596),
then finally amplified by Power amplifier Q1009
(2SK3476) up to 5 Watts. This two stages (Q1010 and
Q1009) power amplifier’s gain is controlled by the APC
circuit.
The 5 Watts RF signal passes through low-pass filter net-
work, antenna switch D1003 (RLS135), and another low-
pass filter network, and then deliver to the ANT jack.
TX APC Circuit
A portion of the Power amplifier output is rectified by
D1002 and D1052 (both RB751S), then delivered to APC
Q1019 (LM2904PWR), Q1020 and Q1021 (both
DTC144EE), as a DC voltage which is proportional to the
output level of the power amplifier.
The APC Q1019 (LM2904PWR) is compared the rectified
DC voltage from the power amplifier and the reference
voltage from the main CPU Q1001 (HD64F2266TF13), to
produce a control voltage, which regulates supply volt-
age to the Drive amplifier Q1010 (2SK2596) and Power
amplifier Q1009 (2SK3476), so as to maintain stable out-
put power under varying antenna loading condition.
PLL
A portion of the output from the VCO Q1014 (2SC5006),
passes through the buffer amplifier Q1017 (2SC5006), then
delivered to the programmable divider section of the PLL
IC Q1003 (MB15A01PFV1), which divided according to the
frequency dividing data that is associated with the setting
frequency input from the main CPU Q1001
(HD64F2266TF13). It is then sent to the phase comparator.
The 11.7 MHz frequency of the reference oscillator circuit
made up of X1002 is divided by the reference frequency
divider section of Q1003 (MB15A01PFV1) into 2340 or

8FT-277R Technical Supplement
Circuit Description
1872 parts to become 5 kHz or 6.25 kHz comparative ref-
erence frequencies, which are utilized by the phase com-
parator.
The phase comparator section of Q1003 (MB15A01PFV1)
compares the phase between the frequency-divided os-
cillation frequency of the VCO circuit and comparative
frequency and its output is a pulse corresponding to the
phase difference. This pulse is integrated by the charge
pump and loop filter of D1012 (DA221) into a control volt-
age (VCV) to control the oscillation frequency of the VCO.

9FT-277R Technical Supplement
Alignment
Introduction
The FT-277R is carefully aligned at the factory for the
specified performance across the amateur band. Realign-
ment should therefore not be necessary except in the event
of a component failure. Only an authorized Vertex Stan-
dard representative should perform all component re-
placement and service, or the warranty policy may be
void.
The following procedures cover the adjustments that are
not normally required once the transceiver has left the fac-
tory. However, if damage occurs and some parts subse-
quently are replaced, realignment may be required. If a
sudden problem occurs during normal operation, it is like-
ly due to component failure; realignment should not be
done until after the faulty component has been replaced.
We recommend that servicing be performed only by au-
thorized Vertex Standard service technicians who are ex-
perienced with the circuitry and fully equipped for repair
and alignment. If a fault is suspected, contact the dealer
from whom the transceiver was purchased for instructions
regarding repair. Authorized Vertex Standard service tech-
nicians realign all circuits and make complete performance
checks to ensure compliance with factory specifications
after replacing any faulty components.
Those who do undertake any of the following alignments
are cautioned to proceed at their own risk. Problems
caused by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Vertex Standard
reserves the right to change circuits and alignment proce-
dures in the interest of improved performance, without
notifying owners.
Under no circumstances should any alignment be attempt-
ed unless the normal function and operation of the trans-
ceiver are clearly understood, the cause of the malfunc-
tion has been clearly pinpointed and any faulty compo-
nents replaced, and realignment determined to be abso-
lutely necessary.
Required Test Equipment
The following test equipment (and familiarity with its
use) is necessary for complete realignment. Correction of
problems caused by misalignment resulting from use of
improper test equipment is not covered under the war-
ranty policy. While most steps do not require all of the
equipment listed, the interactions of some adjustments
may require that more complex adjustments be per-
formed afterwards.
Do not attempt to perform only a single step unless it is
clearly isolated electrically from all other steps. Have all
test equipment ready before beginning and, follow all of
the steps in a section in the order presented.
RF Signal Generator with calibrated output level at 500
MHz
Deviation Meter (linear detector)
In-line Wattmeter with 5% accuracy at 500 MHz
50-Ohm 10-W RF Dummy Load
8-Ohm AF Dummy Load
Regulated DC Power Supply adjustable from 6 to 15
VDC, 2A
Frequency Counter: 0.2-ppm accuracy at 500 MHz
AF Signal Generator
AC Voltmeter
DC Voltmeter: high impedance
UHF Sampling Coupler
SINAD Meter
Alignment Preparation & Precautions
A 50-Ohm RF load and in-line wattmeter must be con-
nected to the main antenna jack in all procedures that
call for transmission; alignment is not possible with an
antenna. After completing one step, read the next step to
see if the same test equipment is required. If not, remove
the test equipment (except dummy load and wattmeter,
if connected) before proceeding.
Correct alignment requires that the ambient tempera-
ture be the same as that of the transceiver and test equip-
ment, and that this temperature be held constant between
68 ~ 86° F (20° ~ 30° C). When the transceiver is brought
into the shop from hot or cold air, it should be allowed
some time to come to room temperature before alignment.
Whenever possible, alignments should be made with os-
cillator shields and circuit boards firmly affixed in place.
Also, the test equipment must be thoroughly warmed up
before beginning.
Note: Signal levels in dB referred to in the alignment pro-
cedure are based on 0dBµ = 0.5µV.

10 FT-277R Technical Supplement
Alignment
Test Setup
Set up the test equipment as shown below for transceiver
alignment.
Entering the Alignment Mode
Alignment of the FT-277R is performed using a front panel
software-based procedure. To perform alignment of the
transceiver, it must first be placed in the “Alignment
Mode,” in which the adjustments will be made and then
stored into memory.
To enter the Alignment mode:
1. Rotate the [VOL/PWR] knob (inner knob) out of the
click-stop to turn on the radio.
2. Rotate the DIAL knob to select the frequency to 435.050
MHz.
3. Turn the power off by rotating the [VOL/PWR] knob
fully counter clockwise.
4. Press and hold in the [VFO(PRI)] key turning the ra-
dio on. Once the radio is on, release the key.
5. Turn the power off by rotating the [VOL/PWR] knob
fully counter clockwise.
6. Press and hold in the PTT and MONI switches turning
the radio on. Once the radio is on, release these two
switches.
7. Press the keypad in the following sequence:
[(MHz)] [0(SET)] [2(CODE)] 
[2(CODE)] [MR/MW(SKIP)]
8. Press the [F]key to cause “A0 REF.xxx” to appear on
the display for five seconds, this signifies that the trans-
ceiver is now in the “Alignment Mode.”
PLL Reference Frequency
1. Rotate the DIAL knob to select the display to “B0106.”
Press the [F]key, then press the [MR/MW(SKIP)] key
to set the alignment, then set the transmit power level
to “LOW.”
2. Press the [F]key, then press the [MR/MW(SKIP)] key
to set the alignment parameter to “A0 REF.xxx,” if
needed.
3. With in five second of appearing the “A0 REF.xxx” on
the display, press the PTT switch to activate the trans-
mitter, adjust the DIAL knob so that the counter fre-
quency reading is 435.050 MHz (±100 Hz).
“TX SECTION” ALIGNMENT SETUP
“RX SECTION” ALIGNMENT SETUP
Inline
Wattmeter
RF Sampling
Coupler
AF Signal
Generator
7.5 V DC
Regulated Power Supply
50
Dummy Load
Ω
Frequency
Counter
Frequency
Counter
MIC GND
7.5 V DC
Regulated Power Supply
SINAD
Meter
RF Signal
Generator
8
Dummy Load
Ω
SP GND

11FT-277R Technical Supplement
RF Front-end Tuning
1. Connect the DC voltmeter to TP1031 on the MAIN unit,
then inject a 440.000 MHz signal at a level of +10 dBµ
(with 1 kHz modulation @±3.5 kHz deviation) from
the RF signal generator.
2. Rotate the DIAL knob to select the display to “B0106.”
3. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A1 TUN.xxx.”
4. With in five second of appearing the “A1 TUN.xxx” on
the display, adjust the DIAL knob so that the DC volt-
meter reaches maximum deflection. The FT-277R RF
Front-end has a broad bandwidth. Therefore, prior to
adjustment you must adjust the DIAL knob to set the
frequency to the middle of the band, in step 2, so you
can set peak in the DC voltmeter’s deflection in the
center of the RF passband.
TX Power Output
1. Rotate the DIAL knob to select the display to “B0206,”
then set the transmit power level to “LOW.”
2. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A2 PWR.xxx.”
3. With in five second of appearing the “A2 PWR.xxx”
on the display, press the PTT switch to activate the
transmitter, adjust the DIAL knob so that the watt-
meter reading is 0.5 Watts (±0.05 Watt).
4. Increase the Transmit power level to “MID.”
5. Press the [F/W]key to recall the alignment parameter
“A2 PWR.xxx.”
6. With in five second of appearing the “A2 PWR.xxx”
on the display, press the PTT switch to activate the
transmitter, adjust the DIAL knob so that the watt-
meter reading is 2.0 Watts (±0.1 Watt).
7. Increase the Transmit power level to “HIGH.”
8. Press the [F/W]key to recall the alignment parameter
“A2 PWR.xxx."
9. With in five second of appearing the “A2 PWR.xxx”
on the display, press the PTT switch to activate the
transmitter, adjust the DIAL knob so that the watt-
meter reading is 5.0 Watts (±0.1 Watt).
TX Deviation
1. Rotate the DIAL knob to select the display to “B0206,”
then set the transmit power level to “LOW.”
2. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A3 DEV.xxx.”
3. With in five second of appearing the “A3 DEV.xxx” on
the display, press the PTT switch to activate the trans-
mitter, adjust the DIAL knob so that the deviation
meter reading is 4.5 kHz (-0.3 kHz) (EXP version: 4.5
kHz ± 0.2 kHz).
DCS TX Deviation
1. Rotate the DIAL knob to select the display to “B0206,”
then activate the DCS, and set the transmit power level
to “LOW.”
2. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A4 DCS.xxx.”
3. With in five second of appearing the “A4 DCS.xxx” on
the display, press the PTT switch to activate the trans-
mitter (with no microphone input), adjust the DIAL
knob so that the deviation meter reading is 0.7 kHz
(±0.05 kHz).
Alignment
TP1031

12 FT-277R Technical Supplement
Alignment
CTCSS TX Deviation
1. Rotate the DIAL knob to select the display to “B0206,”
then activate the CTCSS encoder with a “100 Hz” tone,
and set the transmit power level to “LOW.”
2. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A5 CTC.xxx.”
3. With in five second of appearing the “A5 CTC.xxx” on
the display, press the PTT switch to activate the trans-
mitter (with no microphone input), adjust the DIAL
knob so that the deviation meter reading is 0.7 kHz
(±0.05 kHz).
S-meter Sensitivity
1. Rotate the DIAL knob to select the display to “B0206.”
2. Inject a 440.000 MHz signal at a level of –5 dBµV (with
1 kHz modulation @±3.5 kHz deviation) from the RF
signal generator.
3. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A6 SM U/D.”
4. With in five second of appearing the “A6 SM U/D” on
the display, press the [(MHz)] key.
5. Increase the RF signal generator output level to +23
dBµV.
6. Press the [F/W]key to recall the alignment parameter
to “A6 SM U/D.”
7. With in five second of appearing the “A6 SM U/D” on
the display, press the [(MHz)] key.
Squelch Sensitivity
1. Rotate the DIAL knob to select the display to “B0206.”
2. Inject a 440.000 MHz signal at a level of –12 dBµV (with
1 kHz modulation @±3.5 kHz deviation) from the RF
signal generator.
3. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A7 SQL U/D.”
4. With in five second of appearing the “A7 SQL U/D” on
the display, press the [(MHz)] key.
5. Increase the RF signal generator output level to –3
dBµV.
6. Press the [F/W]key to recall the alignment parameter
to “A7 SQL U/D.”
7. With in five second of appearing the “A7 SQL U/D” on
the display, press the [(MHz)] key.
DC Voltmeter
1. Set the power supply voltage to 9.9 V.
2. Press the [F/W]key, then press the [MR/MW(SKIP)]
key to set the alignment parameter to “A8 BAT RV.”
3. With in five second of appearing the “A8 BAT RV” on
the display, press the [REV(HOME)] key.
To close the alignment mode
1. Turn the power off by rotating the [VOL/PWR] knob
fully counter clockwise.
2. The next time the transceiver is turned on, press and
hold in the [VFO(PRI)] key turning the radio on. Once
the radio is on, release the key.
normal operation may resume.

13
MAIN Unit
FT-277R Technical Supplement
Circuit Diagram
1.73 V
1.13 V
1.29 V
1.83 V
2.15 V
3.18 V
3.18 V
5.12 V
8.13 V
8.05 V
1.91 V
1.29 V
8.00 V
3.75 V
3.72 V
RX: 1.93 V
TX: 1.89 V
RX: 2.45 V
TX: 2.45 V
3.12 V
0.42 V
4.43 V
3.30 V
2.08 V @ Low Freq.
Wide: 5.05 V
Narrow: 0 V
RX: 4.35 V
TX: 5.00 V
RX: 4.95 V
TX: 0 V RX: 0 V
TX: 4.87 V
Wide: 0 V
Narrow: 5.07 V
RX: 5.07 V
TX: 0 V
0.65 V
4.22 V
RX: 0.40 V
TX: 5.09 V
RX: 4.56 V
TX: 5.00 V
RX: 5.05 V
TX: 0.60 V
RX: 0.64 V
TX: 0 V
RX: 4.86 V
TX: 0 V
2.61 V
2.33 V
2.88 V 5.11 V
4.64 V
2.35 V
0.28 V
0.88 V
5.13 V
2.07 V
2.07 V
9.14 V 3.30 V
3.30 V
5.13 V
3.36 V
2.77 V
3.32 V
1.95 V
1.95 V
1.95 V
1.95 V
5.13 V
1.48 V @CHG (PWR "OFF")
0.91 V @CHG (PWR "OFF")
1.53 V @CHG
13.1 V @CHG
13.8 V
13.5 V
4.90 V
4.86 V
0.99 V
+16.4 dBµ
4.21 V
2.24 V
0.71 V
4.68 V
1.79 V
0.4 V 0.99 V
TX: 1.88 V
TX: 2.62 V
TX "H": 2.10 V
TX "M": 1.60 V
TX "L": 1.10 V
TX "H": 7.85 V
TX "M": 7.90 V
TX "L": 7.92 V
TX "H": 2.21 V
TX "M": 1.28 V
TX "L": 0.49 V
TX "H": 1.95 V
TX "M": 1.15 V
TX "L": 0.46 V
TX: 1.72 V
4.83 V 4.30 V
2.84 V
0.89 V
0.25 V
2.10 V
2.10 V
2.10 V
TUNE 2.06 V
5.13 V
1.95 V
2.26 V
PTT: 1.65 V
MONI: 2.05 V
3.30 V
3.30 V
1.90 V
2.96 V
TX: 2.96 V
3.25 V
TX: 3.25 V
3.28 V
3.19 V
3.26 V
2.14 V1.06 V
RX: 2.00 V
TX: 0 V
5.57 V 3.95 V
2.73 V
1.97 V
2.62 V
TX: 2.62 V
10.9 V
3.30 V
9.37 V @CHG (PWR "OFF")
TX: 10.5 V
TX: +10.0 dBm @440.00 MHz
TX: -0.3 dBm
RX: –8.4 dBm
TX: –12.4 dBm
+5.0 dBm @392.75 MHz
+11.5 dBµ @47.25 MHz
+12.2 dBµ
+15.2 dBµ @ 440.00 MHz,
SINAD 12 dB
2.10 V @440.00 MHz
EAION
(0V) 5.08 V
EXT DC IN 13.8V

14
MAIN Unit
FT-277R Technical Supplement
Note

15
MAIN Unit
FT-277R Technical Supplement
Parts Layout (Side A)
BADCFE
1
3
2
BD4845FVE
(Q1006)
HD64F2266
(Q1001)
DA221 (K)
(D1025)
DAN222 (N)
(D1024)
KTA2014E-GR-RTK/P
(Q1030,1031,1032,
1034,1040,1059)
KTC4075E-GR-RTK/P
(Q1035, 1038, 1039, 1042,
1061, 1062, 1064, 1065,
1069, 1076, 1077, 1079)
2SC4915 (QY)
(Q1024)
FMMTL718TA
(Q1041)
2SB1132 (BA)
(Q1063, 1078)
KRA304E-RTK/P
(Q1033,1043,1058,1071)
KRC404E-RTK/P
(Q1020, 1021,1029,1044,1045,
1057,1068)
2SB1201S
(Q1037)
2SD1664 (DA)
(Q1067)
2SK3476
(Q1009)
BR24L64F
(Q1002)
LM2904PWR
(Q1019)
TDA2822
(Q1008)

16
MAIN Unit
FT-277R Technical Supplement
Parts Layout (Side B)
badcfe
1
3
2
2SA1774 (FR)
(Q1018, 1036)
KTA2014E-GR-RTK/P
(Lot.6-)
(Q1018, 1036)
KTC4075E-GR-RTK/P
(Q1028,1052,1055,1060,1066,
1072,1073,1081,1082)
2SC4915 (QY)
(Q1016)
2SC5006 (73)
(Q1011, 1012, 1013, 1014,1017)
KRC404E-RTK/P
(Q1015,1025,1026,1047,
1048,1049,1051,
1070,1075)
MB15A01PFV1
(Q1003)
NJM2591V
(Q1004)
DA221 (K)
(D1012, 1030)
DAN222 (N)
(D1029)
2SJ364 (4M)
(Q1056)
2SK2596 (BX)
(Q1010)
KRA304E-RTK/P
(Q1027,1054,1084)
LM2904PWR
(Q1083)
LM2902PWR
(Q1046, 1074)
NJU7231F33
(Q1007)
XC6202P
(Q1080)
BU2090FS
(Q1005)
3SK296ZQ (ZQ)
(Q1022, 1023)

17
Parts List
REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR
MAIN Unit
FT-277R Technical Supplement
PCB with Components CB3457029 DST:USA2
CB3457030 DST:EXP2
Printed Circuit Board FR014460C 1-
C 1002 CHIP CAP. 2pF 50V CK GRM1554C1H2R0BZ01D K22178289 1- B a1
C 1004 CHIP CAP. 9pF 50V CH GRM1552C1H9R0BZ01D K22178296 1- B a1
C 1005 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- B a1
C 1006 CHIP CAP. 5pF 50V CH GRM1552C1H5R0BZ01D K22178292 1- B a1
C 1007 CHIP CAP. 0.001uF 50V B GRM188B11H102KA01D K22174821 1- B a1
C 1008 CHIP CAP. 6pF 50V CH GRM1552C1H6R0BZ01D K22178293 1- B a1
C 1009 CHIP CAP. 3pF 50V CJ GRM1553C1H3R0BZ01D K22178290 1- B a1
C 1010 CHIP CAP. 0.75pF 50V CK GRM1554C1HR75BZ01D K22178286 1- A E1
C 1011 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- A E1
C 1012 CHIP CAP. 0.75pF 50V CK GRM1554C1HR75BZ01D K22178286 1- A E1
C 1013 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- A E1
C 1015 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1016 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1017 CHIP CAP. 27pF 50V CH GRM1552C1H270JZ01D K22178222 1- B a1
C 1018 CHIP CAP. 10pF 50V CH GRM1552C1H100BZ01D K22178297 1- B b1
C 1019 CHIP CAP. 10pF 50V CH GRM1552C1H100BZ01D K22178297 1- B b1
C 1020 CHIP CAP. 15pF 50V CH GRM1552C1H150JZ01D K22178216 1- A E1
C 1022 CHIP CAP. 7pF 50V CH GRM1552C1H7R0BZ01D K22178294 1- B b1
C 1023 CHIP CAP. 7pF 50V CH GRM1552C1H7R0BZ01D K22178294 1- B b1
C 1025 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B a1
C 1026 CHIP CAP. 0.1uF 25V B GRM21BB11E104KA01L K22140811 1- A E1
C 1027 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B a1
C 1028 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1029 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1030 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1031 CHIP CAP. 0.047uF 10V B GRM155B11A473KA01D K22108801 1- A E1
C 1032 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A E1
C 1033 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1034 CHIP TA.CAP. 4.7uF 16V TEESVA1C475M8R K78120031 1- A E1
C 1035 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E1
C 1037 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b1
C 1038 CHIP CAP. 6pF 50V CH GRM1552C1H6R0BZ01D K22178293 1- B b1
C 1039 CHIP CAP. 8pF 50V CH GRM1552C1H8R0BZ01D K22178295 1- B b1
C 1040 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1041 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c1
C 1041 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c1
C 1042 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1043 CHIP CAP. 13pF 50V CH MCH155A130JK K22179706 1- B c1
C 1044 CHIP CAP. 10pF 50V CH GRM1552C1H100BZ01D K22178297 1- B c1
C 1045 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1046 CHIP CAP. 10pF 50V CH GRM1552C1H100BZ01D K22178297 1- B d1
C 1047 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B d1
C 1048 CHIP CAP. 5pF 50V CH GRM1552C1H5R0BZ01D K22178292 1- B d1
C 1049 CHIP CAP. 5pF 50V CH GRM1552C1H5R0BZ01D K22178292 1- B d1
C 1050 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- B e1
C 1051 CHIP CAP. 9pF 50V CH GRM1552C1H9R0BZ01D K22178296 1- B e1
C 1052 CHIP CAP. 18pF 50V CH GRM1552C1H180JZ01D K22178218 1- B e1
C 1053 CHIP CAP. 0.001uF 50V B GRM188B11H102KA01D K22174821 1- B e1
C 1054 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B d1
C 1055 CHIP CAP. 22pF 50V CH GRM1552C1H220JZ01D K22178220 1- B e1
C 1056 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1057 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1058 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1059 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1060 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1061 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B d1
C 1062 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1063 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B d1
C 1064 CHIP TA.CAP. 0.1uF 20V SKF-1D104M-RP K78130049 1- B e1
C 1065 CHIP TA.CAP. 0.1uF 20V SKF-1D104M-RP K78130049 1- B e1
C 1066 CHIP TA.CAP. 4.7uF 16V TEESVA1C475M8R K78120031 1- B e1
C 1067 CHIP TA.CAP. 0.1uF 20V SKF-1D104M-RP K78130049 1- B e1
C 1068 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1069 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1070 CHIP CAP. 0.047uF 10V B GRM155B11A473KA01D K22108801 1- B e1
C 1071 CHIP CAP. 47pF 50V CH GRM1552C1H470JZ01D K22178228 1- B e1
C 1072 CHIP TA.CAP. 10uF 10V TEESVA1A106M8R K78100028 1- B e1
C 1073 CHIP CAP. 0.001uF 50V B GRM188B11H102KA01D K22174821 1- B e1
C 1074 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e1
C 1075 CHIP CAP. 1uF 10V F GRM188F11A105ZA01D K22105001 1- B f1

18
Parts List
MAIN Unit
REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR
FT-277R Technical Supplement
C 1076 CHIP CAP. 33pF 50V CH GRM1552C1H330JZ01D K22178224 1- B f1
C 1077 CHIP CAP. 33pF 50V CH GRM1552C1H330JZ01D K22178224 1- B e1
C 1078 CHIP CAP. 33pF 50V CH GRM1552C1H330JZ01D K22178224 1- B e1
C 1079 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- B f1
C 1080 CHIP CAP. 9pF 50V CH GRM1552C1H9R0BZ01D K22178296 1- B f1
C 1081 CHIP CAP. 100pF 50V CH GRM1552C1H101JD01D K22178236 1- B f1
C 1082 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B f 1
C 1083 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B f 1
C 1084 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A C2
C 1086 CHIP CAP. 10pF 50V CH GRM1552C1H100BZ01D K22178297 1- B f1
C 1087 CHIP CAP. 100pF 50V CH GRM1552C1H101JD01D K22178236 1- B f1
C 1088 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B f1
C 1089 CHIP CAP. 1uF 6.3V B GRM188B10J105KA01D K22084801 1- B f1
C 1090 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B f1
C 1092 CHIP CAP. 7pF 50V CH GRM1552C1H7R0BZ01D K22178294 1- B a1
C 1094 CHIP CAP. 3pF 50V CJ GRM1553C1H3R0BZ01D K22178290 1- B b2
C 1097 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b1
C 1098 CHIP CAP. 12pF 50V CH GRM1552C1H120JZ01D K22178214 1- B b2
C 1099 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b2
C 1100 CHIP CAP. 0.5pF 50V CK GRM1554C1HR50BZ01D K22178285 1- B b2
C 1101 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- B b1
C 1102 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b1
C 1103 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B b1
C 1103 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B b1
C 1104 CHIP CAP. 100pF 50V CH GRM1552C1H101JD01D K22178236 1- B b1
C 1105 CHIP CAP. 0.75pF 50V CK GRM1554C1HR75BZ01D K22178286 1- B b1
C 1106 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b2
C 1107 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b2
C 1108 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b2
C 1109 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- B b1
C 1110 CHIP CAP. 1pF 50V CK GRM1554C1H1R0BZ01D K22178287 1- B b1
C 1111 CHIP CAP. 0.5pF 50V CK GRM1554C1HR50BZ01D K22178285 1- B b1
C 1112 CHIP CAP. 0.75pF 50V CK GRM1554C1HR75BZ01D K22178286 1- B c1
C 1114 CHIP CAP. 27pF 50V CH GRM1552C1H270JZ01D K22178222 1- B b1
C 1115 CHIP CAP. 27pF 50V CH GRM1552C1H270JZ01D K22178222 1- B c1
C 1116 CHIP CAP. 0.75pF 50V CK GRM1554C1HR75BZ01D K22178286 1- B c1
C 1117 CHIP CAP. 0.75pF 50V CK GRM1554C1HR75BZ01D K22178286 1- B c1
C 1119 CHIP CAP. 27pF 50V CH GRM1552C1H270JZ01D K22178222 1- B c1
C 1121 CHIP CAP. 8pF 50V CH GRM1552C1H8R0BZ01D K22178295 1- B c1
C 1122 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1123 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1124 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c1
C 1124 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c1
C 1125 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1126 CHIP CAP. 27pF 50V CH GRM1552C1H270JZ01D K22178222 1- B c1
C 1129 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1130 CHIP CAP. 4pF 50V CH GRM1552C1H4R0BZ01D K22178291 1- B c1
C 1131 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A B1
C 1132 CHIP CAP. 18pF 50V CH GRM1552C1H180JZ01D K22178218 1- A B1
C 1133 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B d1
C 1134 CHIP CAP. 10uF 6.3V B JMK316BJ106KL-T K22081802 1- B e2
C 1135 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B e2
C 1135 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B e2
C 1137 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e2
C 1138 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e2
C 1139 CHIP CAP. 56pF 50V CH GRM1552C1H560JD01D K22178230 1- B e2
C 1139 CHIP CAP. 68pF 50V CH GRM1552C1H680JZ01D K22178232 10- B e2
C 1140 CHIP CAP. 68pF 50V CH GRM1552C1H680JZ01D K22178232 1- B e2
C 1140 CHIP CAP. 82pF 50V CH GRM1552C1H820JD01D K22178234 10- B e2
C 1141 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e2
C 1142 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B e2
C 1142 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B e2
C 1143 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B e2
C 1143 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B e2
C 1144 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e2
C 1145 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 1- B e2
C 1146 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 1- B e2
C 1147 CHIP CAP. 220pF 50V B GRM155B11H221KA01D K22178801 1- B e2
C 1148 CHIP CAP. 680pF 50V B GRM155B11H681KA01D K22178807 1- B e2
C 1149 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e2
C 1150 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B e2
C 1150 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B e2
C 1151 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B f 2

19
Parts List
REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR
MAIN Unit
FT-277R Technical Supplement
C 1151 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B f 2
C 1152 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A B2
C 1153 CHIP TA.CAP. 10uF 10V TEESVA1A106M8R K78100028 1- A B2
C 1154 CHIP TA.CAP. 10uF 10V TEESVA1A106M8R K78100028 1- A B2
C 1155 CHIP CAP. 1uF 6.3V B GRM188B10J105KA01D K22084801 1- A E2
C 1156 CHIP CAP. 0.1uF 25V B GRM21BB11E104KA01L K22140811 1- A E1
C 1157 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E2
C 1158 CHIP TA.CAP. 4.7uF 16V TEESVA1C475M8R K78120031 1- A E2
C 1158 CHIP TA.CAP. 4.7uF 16V TEESVA21C475M8R K78120080 11- A E2
C 1159 CHIP TA.CAP. 4.7uF 16V TEESVA1C475M8R K78120031 1- A E2
C 1159 CHIP TA.CAP. 4.7uF 16V TEESVA21C475M8R K78120080 11- A E2
C 1160 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B d2
C 1161 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E2
C 1162 AL.ELECTRO.CAP. 100uF 16V EEE1CA101WP K48120012 1- B a2
C 1162 AL.ELECTRO.CAP. 100uF 16V UWX1C101MCL1GB K48120032 13- B a2
C 1163 CHIP TA.CAP. 10uF 10V TEESVA1A106M8R K78100028 1- A E2
C 1163 CHIP TA.CAP. 10uF 10V TEESVA21A106M8R K78100076 11- A E2
C 1164 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A E2
C 1165 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E2
C 1166 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A E2
C 1167 AL.ELECTRO.CAP. 100uF 10V RVZ-10V101MF55U-R2 K48100008 1- B b2
C 1167 AL.ELECTRO.CAP. UWX1C101MCL1GB S8101395 12- B b2
C 1167 AL.ELECTRO.CAP. 100uF 16V UWX1C101MCL1GB K48120032 15- B b2
C 1168 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A E2
C 1169 AL.ELECTRO.CAP. 100uF 10V RVZ-10V101MF55U-R2 K48100008 1- B a2
C 1169 AL.ELECTRO.CAP. UWX1C101MCL1GB S8101395 12- B a2
C 1169 AL.ELECTRO.CAP. 100uF 16V UWX1C101MCL1GB K48120032 15- B a2
C 1170 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E2
C 1171 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E2
C 1172 CHIP CAP. 100pF 50V CH GRM1552C1H101JD01D K22178236 1- A E1
C 1173 CHIP CAP. 100pF 50V CH GRM1552C1H101JD01D K22178236 1- A E1
C 1174 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B a2
C 1175 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- A F3
C 1175 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- A F3
C 1176 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- A F2
C 1176 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- A F2
C 1177 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b1
C 1178 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B d3
C 1179 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e3
C 1180 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c3
C 1180 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c3
C 1181 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c2
C 1181 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c2
C 1182 CHIP CAP. 0.0022uF 50V B GRM155B11H222KA01D K22178813 1- B c2
C 1183 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c2
C 1183 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c2
C 1184 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B c2
C 1185 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B c2
C 1186 CHIP TA.CAP. 22uF 6.3V TEESVA0J226M8R K78080047 1- B c2
C 1187 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e3
C 1188 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e3
C 1189 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B e3
C 1190 CHIP CAP. 0.0068uF 25V B GRM155B11E682KA01D K22148803 1- B e3
C 1191 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e3
C 1192 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B e3
C 1193 CHIP CAP. 0.047uF 10V B GRM155B11A473KA01D K22108801 1- B e3
C 1194 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- A E2
C 1194 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- A E2
C 1195 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A D1
C 1196 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A C1
C 1197 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A C1
C 1198 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A C1
C 1199 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B a3
C 1200 AL.ELECTRO.CAP. 47uF 16V RV4-16V470MF46-RR2 K48120019 1- B b2
C 1200 AL.ELECTRO.CAP. 47uF 16V UZS1C470MCL1GB K48120031 12- B b2
C 1201 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B a3
C 1202 CHIP TA.CAP. 150uF 4V TEESVC0G157M12R K78060034 1- B a3
C 1203 CHIP CAP. 0.1uF 25V B GRM21BB11E104KA01L K22140811 1- A F2
C 1204 CHIP CAP. 0.22uF 10V B GRM188B11A224KA01D K22104801 1- A F2
C 1205 CHIP TA.CAP. 22uF 6.3V TEESVA0J226M8R K78080047 1- A E2
C 1205 CHIP TA.CAP. 22uF 6.3V TEESVA20J226M8R K78080088 11- A E2
C 1206 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A F2
C 1207 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 1- B c2

20
Parts List
MAIN Unit
REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS. LOT SIDE LAY ADR
FT-277R Technical Supplement
C 1208 CHIP CAP. 1uF 6.3V B GRM188B10J105KA01D K22084801 1- B c2
C 1209 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c2
C 1209 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c2
C 1210 CHIP CAP. 330pF 50V B GRM155B11H331KA01D K22178803 1- B c2
C 1211 CHIP TA.CAP. 4.7uF 16V TEESVA1C475M8R K78120031 1- B c2
C 1212 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 1- B c2
C 1213 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B c2
C 1213 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B c2
C 1214 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- B b2
C 1214 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- B b2
C 1215 CHIP CAP. 680pF 50V B GRM155B11H681KA01D K22178807 1- B b2
C 1216 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 1- B b2
C 1217 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 1- B b2
C 1218 CHIP CAP. 0.0068uF 25V B GRM155B11E682KA01D K22148803 1- B b2
C 1219 CHIP CAP. 330pF 50V B GRM155B11H331KA01D K22178803 1- B b2
C 1220 CHIP CAP. 680pF 50V B GRM155B11H681KA01D K22178807 1- B b2
C 1221 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- B c2
C 1221 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- B c2
C 1222 CHIP CAP. 0.22uF 10V B GRM188B11A224KA01D K22104801 1- B c2
C 1227 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B c2
C 1228 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c1
C 1229 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A D2
C 1230 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b3
C 1231 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b3
C 1232 CHIP TA.CAP. 4.7uF 16V TEESVA1C475M8R K78120031 1- A E2
C 1233 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B b3
C 1233 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B b3
C 1234 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b3
C 1235 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 1-18 B b3
C 1235 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 DST:EXP2 19- B b3
C 1235 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 DST:USA2 19- B b3
C 1236 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 1-18 B b3
C 1236 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 DST:EXP2 19- B b3
C 1236 CHIP CAP. 0.022uF 16V B GRM155B11C223KA01D K22128806 DST:USA2 19- B b3
C 1237 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 1-18 B b3
C 1237 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 DST:EXP2 19- B b3
C 1237 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 DST:USA2 19- B b3
C 1238 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A E2
C 1239 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1-3 A D1
C 1239 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 4- A D1
C 1240 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b3
C 1241 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A A3
C 1242 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c3
C 1243 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B c2
C 1244 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B b3
C 1245 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- B b2
C 1245 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- B b2
C 1246 CHIP CAP. 5pF 50V CH GRM1552C1H5R0BZ01D K22178292 1- B b2
C 1247 CHIP TA.CAP. 10uF 10V TEESVA1A106M8R K78100028 1- B b2
C 1248 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- B b2
C 1248 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- B b2
C 1249 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- B b2
C 1250 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b2
C 1251 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- B b2
C 1252 CHIP CAP. 27pF 50V CH GRM1552C1H270JZ01D K22178222 1- B b2
C 1253 CHIP CAP. 470pF 50V B GRM155B11H471KA01D K22178805 1- B b2
C 1255 CHIP CAP. 1uF 6.3V B GRM188B10J105KA01D K22084801 1- B b2
C 1256 CHIP CAP. 0.22uF 10V B GRM188B11A224KA01D K22104801 1- A D2
C 1257 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- A D2
C 1257 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- A D2
C 1258 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K22128804 1- A C2
C 1258 CHIP CAP. 0.01uF 25V B GRM155B11E103KA01D K22148834 11- A C2
C 1259 CHIP CAP. 0.0047uF 25V B GRM36B472K25PT K22148830 1- A C2
C 1259 CHIP CAP. 0.0047uF 50V B GRM155B11H472KA01D K22178838 11- A C2
C 1260 CHIP CAP. 2pF 50V CK GRM1554C1H2R0BZ01D K22178289 1- B c2
C 1261 CHIP CAP. 22pF 50V CH GRM1552C1H220JZ01D K22178220 1- B c2
C 1262 CHIP CAP. 18pF 50V CH GRM1552C1H180JZ01D K22178218 1- B c2
C 1263 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A D2
C 1264 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A D2
C 1265 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A D2
C 1266 CHIP CAP. 0.1uF 10V B GRM155B11A104KA01D K22108802 1- A D2
C 1267 CHIP TA.CAP. 47uF 4V SK7-0G476M-RA K78060048 1- B c1
C 1268 CHIP CAP. 0.001uF 50V B GRM155B11H102KA01D K22178809 1- A C2