Kenwood VT-181 User manual

AC VOLTMETER
VT-181/VT-181E
SERVICE MANUAL KENWOOD TMI CORPORATION
© 1998-4/B51-1132-00 (K/K)
HANDLE : (K01-0564-08)
HANDLE COVER : (B09-0410-08)
FRONT PANEL
VT-181 : (A63-0301-08)
VT-181E : (A63-0316-08)
SIDE FRAME
(A13-2254-08)
PUSH KNOB
(K24-3015-08) KNOB
(K21-0959-08)
RORARY KNOB
(K21-0961-08)
RUBBER FOOT
(J02-0543-08)
VT-181/VT-181E(K)INT98.4.910:26AM y[W 2

VT-181/VT-181E
2
The following instructions are for use by qualified personnel only. To avoid electric shock,
do not perform any servicing other than contained in the operating instructions unless you
are qualified to do so.
WARNING
CONTENTS
SPECIFICATIONS..........................................................................................................3
SAFETY..........................................................................................................................4
CIRCUIT DESCRIPTION................................................................................................5
BLOCK DIAGRAM..........................................................................................................6
ADJUSTMENT................................................................................................................7
PARTS LIST....................................................................................................................9
PARTS LIST (ELECTRICAL)........................................................................................10
SCHEMATIC DIAGRAM...............................................................................................15
P.C. BOARD .................................................................................................................21
VT-181/VT-181E(K)INT98.4.910:26AM y[W 3

VT-181/VT-181E
3
SPECIFICATIONS
Measurable Voltage
dB
dBm
Error
Frequency response
Input impedance
Durable input voltage
Gain
Output voltage
Output resistance
Frequency response
Distortion
Signal to noise ratio
1mV to 300mV in 12 ranges:1,3,
10,30,100,300mV,1,3,10,30,
100,300V full scale.
-80 to +50dB(0dB=1V)
-80 to +52dBm(0dBm=1mW at 600Ω)
500V (DC +AC peak) 1V to 300V range
100V (DC +AC peak) 1mV to 300mV range
Within specifications
temp./ hum.range
Full operation temp./
hum.range
Line voltage
Power consumption
Dimensions
WXHXD(mm)
Net Weight
Accessories
Power cable
Input cable
Replacement fuse
Instruction manual
Adjust driver
Less than 1% at full scale (Rated by signal-noise
ratio in 1mV and 1V range)
Over 40dB at full scale
Within ±3% of full scale at 1kHz
0.3mV to 100mV in 12 ranges:0.3,
1,3,10,30,100,300mV,1,3,10,
30,100V full scale.
-90 to +40dB(0dB=1V)
-90 to +42dBm(0dBm=1mW at 600Ω)
500V (DC +AC peak) 1V to 300mV range
100V (DC +AC peak) 0.3mV to 300mV range
Less than 1% at full scale (Rated by signal-
noise ratio in 0.3mV,1mV and 1V ranges)
Over 30dB at 0.3mV range
Power Supply Section
Meter Section VT-181EVT-181Item
Environmental
Indoor Use Only Altitude up to 2000m OVERVOLTAGE CATEGORY¿POLLUTION DEGREE2
Amplifier Section
±10% at 5Hz to 1Mhz, ±5% at 10Hz to 500kHz and
±2% at 20Hz to 100kHz as reference to 1kHz response.
10MΩ±5%, with less than 50pF parallel capacitance.
60dB ±1dB(Approx.70dB)
1Vrms ±20%
600Ω±20% at 1kHz
Within±3dB at 5Hz to 500kHz
10 to 40˚C / 80% RH or less
0 to 50˚C / 80% RH or less
100/120/220/230/ Vac ±10% 50/60Hz
Max.6.9W
128(128)X190(210)X239(259)
Value in ( ) include protrusions
2.8kg
1pc
CA-41p 1pc
1pc
1copy
1pc
Stability
Residual voltage Less than 20uV with input shorted on 1mV range Less than 30uV with input shorted on 0.3mV
range
Within ±0.5% of full scale for ±10 line voltage fluctuation
VT-181/VT-181E(K)INT98.4.910:31AM y[W 6

VT-181/VT-181E
4
SAFETY
Before connecting the instrument to a power source, care-
fully read the following information, then verify that the
proper power cord is used and the proper line fuse is
installed for power source. The specified voltage is shown
on the rear panel. If the power cord is not applied for
specified voltage, there is always a certain amount of dan-
ger from electric shock.
Line voltage
This instrument operates using ac-power input voltages
that 100/120/220/230 V at frequencies from 50 Hz to
60Hz.
Power cord
The ground wire of the 3-wire ac power plug places the
chassis and housing of the instrument at earth ground. Do
not attempt to defeat the ground wire connection or float
the instrument ; to do so may pose a great safety hazard.
The appropriate power cord is supplied by an option that
is specified when the instrument is ordered.
The optional power cords are shown as follows in Fig.1
Line fuse
The fuse holder is located on the rear panel and contains
the line fuse. Verify that the proper fuse is installed by
replacing the line fuse.
Voltage conversion
This instrument may be operated from either a 100 to
230V, 50/60Hz power source.
Use the following procedure to change from 100 to 230V
operation or vice verse.
1. Remove the fuse holder.
2. Replace fuse F1 with a fuse of appropriate value.
3. Reinsert it for appropriate voltage range.
4. When performing the reinsertion of fuse holder for the
voltage conversion, the appropriate power cord should
be used. (See fig.1)
SAFETY
North American
120 volt/60 Hz
Rated 15 amp
(12 amp max ; NEC)
Universal Europe
230 volt/50 Hz
Rated 16 amp
U.K.
230 volt/50 Hz
Rated 5 amp
Australian
240 volt/50 Hz
Rated 10 amp
North American
240 volt/60 Hz
Rated 15 amp
(12 amp max ; NEC)
Switzerland
230 volt/50Hz
Rated 10 amp
Fig.1 Power Input Voltage Configuration
Plug configuration power cord and plug type Factory installed
instrument fuse
0.2A, 250V
slow blow
5x20mm
0.1A, 250V
slow blow
5x20 mm
0.1A, 250V
slow blow
5x20 mm
0.1A, 250V
slow blow
5x20 mm
0.2A, 250V
slow blow
5x20mm
0.3A, 250V
slow blow
5x20 mm
Line cord
plug fuse
None
None
None
Parts No. for
power cord
E30-1982-08
E30-1985-08
E30-1986-08
None
5A
Type C
None Ñ
Ñ
E30-1983-08
VT-181/VT-181E(K)INT98.4.910:31AM y[W 7

VT-181/VT-181E
5
General
A Signal voltage to be measured, which is input from the
INPUT connector, is passed through the First Attenuator
and is converted to a low impedance by the Impedance
Convertor. The impedance-converted signal is normalized,
or further attenuated in proportion to 1mVrms fullscale value
through the Second and Third Attenuator. The normalized
signal is magnified 20-fold by the Main Amplifier and is fed
to the Output Amplifier and the Absolute-Mean Value Detec-
tor.
The Output Amplifier magnifies the signal 50-fold and feeds
to the OUTPUT connector. The Absolute-Mean Value
Detector converts the signal from the Main Amplifier to DC
current in proportion to the absolute mean value. The con-
verted signal activates the Meter.
The Attenuator Control encodes the signal led from the
RANGE selector to generate an Attenuator Control signal.
This signal controls the First, Second and Third attenuator to
set the sensitivity corresponding to each range.
The Power Supply feeds to the functional circuit ±5V DC
voltages stabilized by its IC regulator.
Description of Functional Circuit
1) First Attenuator
A potential divider act as a attenuator. The amount of atten-
uation is switched in tow steps by relay contacts:0dB and -
60dB.
2) Impedance Converter
A FET differential input Amplifier act as a impedance con-
verter with 0dB(10dB) gain. Which converts the First Attenu-
ator output signal to a sufficiently low impedance and feeds
of the Second Attenuator.
3) Second Attenuator
A resistance divider act as a attenuator. The amount of
attenuation is switch in two steps by relay contacts:0dB and
-30dB.
4) Third Attenuator
A resistance divider network act as a attenuator. The
amount of attenuation is switched in four steps by FET
switch:0dB,-10dB,-20dB,and -30dB.
5) Main Amplifier
A wideband,non-inverting differential amplifier act as the
main amplifier. Which has high input impedance,low output
impedance and 20-fold gain. This output signal level is
20mVrms for the fullscale read on the Meter.
6) Output Amplifier
A wideband,non-inverting differential amplifier act as a out-
put amplifier. Which has 50-fold gain and 600Ωoutput
impedance. The output signal level is 1Vrms for fullscale
read on the Meter,and works stable even for capacitive
loads.
7) Absolute-Mean Value Detector
An absolute-mean value detector comprised of a high
through-rate and high gain amplifier. Which has a very good
linearity by negative feedback from the current flowing
through the Meter load. In switching, this provides a suffi-
ciently wide frequency band so that the high frequency
phase compensation circuit is reset.
8) Attenuator Control
A logic control circuit comprised of a diode matrix and output
buffer transistors. This encodes a 12-bit signal from the
RANGE selector switch to 6-bit signals,which control the
First,Second and Third Attenuator. The remote control con-
nector is connected to this circuit.
9) Rotary Switch
A 12 contacts rotary switch which design the operation
range. For different range,different attenuation ratio are acti-
vated.
10) Gain Control
To using the dB scale to measure relative voltage, you may
get a reference reading by change the gain control. (relative
ref.) Which capable to vary 0 to 10dB.
11) Power Supply
The power source circuit supply±5V DC from the AC input.
Which contain a silicon diode bridge for full-wave rectifica-
tion,high-capacitance electrolytic capacitors for
smoothing,and an IC regulator stabilization.
CIRCUIT DESCRIPTION
The voltage or sentence in parenthes is applicable in case of the "VT-181E".
In studying the operation of each circuit in voltmeter please refer to "BLOCK DIAGRAM".
VT-181/VT-181E(K)INT98.4.910:31AM y[W 10

VT-181/VT-181E
6
BLOCK DIAGRAM
CH1. PC BOARD OUTPUT-1
INPUT
RELATIVE REF
METER
DC5V
GND
DC-5V
POWER ON/OFF
IMPEDANCE
CONVERTER MAIN AMP OUTPUT AMP
ABSOLUTE
MEAN
VALUE DET
AC 100V/120V/220V/230V
50/60Hz
1st ATT 2nd ATT 3rd ATT
GAIN
CONTROL
ATT
CONTROL
ROTARY SW
POWER
TRANSFORMER POWER SUPPLY
VT-181/VT-181E(K)INT98.4.910:31AM y[W 11

300mV range VR102
(Unless otherwise specified, the above connection should be used as to the follow-
ing items.)
RANGE: 300 mV
1) Input a 1 kHz (or 400 Hz), 300 mVrms sine wave, and set the pointer to 3.0 of the
0-3 scale. Check that the variable range is less than 98% and more than 102%
with respect to 3.0 (full-scale).
2) Waveforms shown on the oscilloscope shall not be deformed.
ITEM PROCEDUREADJUSTMENT POINT
Oscilloscope
50Ωoscillator
Main unit
CAL
OUT
IN
Oscillator or calibrator
Oscillator Calibrator
OK NG NG
OUT OUT
VT-181/VT-181E
7
ADJUSTMENT
To obtain the best performance, periodically calibrate the
unit. Sometimes, only one mode need be calibrated, while at
other times, all modes should be calibrated. When one
mode is calibrated, it must be noted that the other modes
may be affected. When calibrating all modes, perform the
calibration in the specified sequence.
The following calibration required an accurate measuring
instrument and an insulated adjusting flat blade screwdriver.
If they are not available, contact your dealer. For optimum
adjustment, turn the power on and warm up the scope suffi-
ciently (more than 30 minutes) before starting.
Before calibrating the unit, check the power supply voltage.
TEST EQUIPMENT REQUIRED
The following instrument or their equivalent should be used
for making adjustment.
PREPARATION FOR ADJUSTMENT
Control Settings
The control settings listed below must be used for each
adjustment procedure.
Exceptions to these settings will be noted as they occur.
After completing a adjustment, return the controls to the fol-
lowing settings.
Test Equipment
Digital Multimeter
Frequency Counter
Oscilloscope
Model
DL-712
FC-756
CS-6010
Maker
KENWOOD
KENWOOD
KENWOOD
NAME OF KNOBS
RANGE
RELATIVE REF
POSITION
VT-181 : 300V
VT-181E : 100V
CAL
Test Equipment
Calibrator
CR Oscillator
Attenuator
Q-Meter
Distortion Meter
Insulation Meter
50ΩTermination
Model
5100B
AG-203
RA-920
4343B
885
SM-5
TA-57
Maker
FLUKE
KENWOOD
KENWOOD
YHP
Shibasoku
TOA
KENWOOD
VT-181/VT-181E(K)INT98.4.911:46AM y[W 14

1V range VR101 RANGE: 1V
1) Input 1kHz (or 400 Hz), 1 Vrms sine wave, and set the pointer to 10.0 V of the 0-
10 scale. Check that the variable range is less than 98% and more than 102%
with respect to 10.0 (full-scale).
2) Waveforms shown on the oscilloscope shall not be deformed.
VT-181/VT-181E
8
ADJUSTMENT
ITEM
100 kHz TC101
frequency RANGE: 1V
characteristics 1) Input a 1kHz (or 400 Hz), 1 Vrms sine wave, and adjust the oscillator output so
that the pointer of the set points at 9.0.
2) Adjust the TC so that the pointer points at 9.0 when the frequency is changed to
100 kHz while the oscillator output remains unchanged.
PROCEDUREADJUSTMENT POINT
0
310
Scale 9
Scale 0-10
Scale 0-3
VT-181/VT-181E(K)INT98.4.910:31AM y[W 15

VT-181/VT-181E
9
PARTS LIST
*New Parts
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.
Ref. No Add-
ress Description
Parts No.
L : Scandinavia K : USA P : Canada R : Mexico
Y : PX(Far East, Hawaii) T : Europe E : Europe G : Germany
Y : AAFES(Europe) X : Australia M : Other Areas
indicates safety critical components.
A01-4087-08 CASE;TOP
A01-4088-08 CASE;BOTTOM
A13-2254-08 FRAME
A22-1344-08 SUB PANEL
A63-0301-08 PANEL
A83-0150-08 REAR PANEL
B09-0410-08 CAP
B31-0778-08 METER
B42-6147-08 LABEL;KENWOOD
B42-6146-08 S/NO.LABEL
B63-0304-08 INSTRUCTION MANUAL; JAP./ENG./CHIN
E04-0503-08 BNC RECEPTACLE
E04-0504-08 BNC RECEPTACLE
E23-1533-08 EARTH LUG
E30-1984-08 JIS POWER CORD
E30-1982-08 CEE POWER CORD
E30-1986-08 SAA POWER CORD
E30-1983-08 UL/CSA POWER CORD
E30-1985-08 BS POWER CORD
E68-0626-08 AC INLET
F50-0129-08 FUSE(5*20)
F50-0130-08 FUSE(5*20)
F15-0785-08 BLIND PLATE
F11-1528-08 SHIELD CASE
J02-0543-08 RUBBER FOOT
J21-8927-08 BRACKET
J11-0513-08 CLAMPER
K01-0564-08 HANDLE
K21-0959-08 KNOB
K21-0961-08 KNOB
L07-1552-08 POWER TRANSFORMER
R31-0810-05 V.R.
N09-4530-08 SCREW,SEMS BINDING M3.5X12
N09-4531-08 SCREW,TRUSS TAPTITE M3x6
N09-4532-08 SCREW,FLAT HD M4X15
N10-2030-41 HEXAGON NUT M3
N10-2040-41 HEXAGON NUT M4
N14-0644-08 FLANGE NUT M3.5
N15-1030-41 PLAIN WASHER
N19-0755-08 WASHER
N19-0754-08 WASHER
N16-0030-41 WASHER
N16-0040-41 SPRING WASHER
N30-2606-41 SCREW,PAN HD M2.6X6
N30-3012-41 SCREW,PAN HD M3X12
N30-3006-41 SCREW,PAN HD M3X6
N16-0030-41 SPRING WASHER
N32-2606-41 SCREW,FLAT HD M 2.6X6
N32-3006-41 SCREW,FLAT HD M3X6
N66-3008-41 SCREW,SEMS PAN HD M3X8
H53-0232-08 CARTON BOX
H10-2894-08 FOAMED STYREN PAD
H20-1750-08 VINYL COVER
W02-2355-08 MAIN UNIT
W02-2368-08 PANEL UNIT
W02-2365-08 RANGE UNIT
W01-0522-08 ACCESSORIES
1
*New Parts
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.
Ref. No Add-
ress Description
Parts No.
L : Scandinavia K : USA P : Canada R : Mexico
Y : PX(Far East, Hawaii) T : Europe E : Europe G : Germany
Y : AAFES(Europe) X : Australia M : Other Areas
indicates safety critical components.
A01-4087-08 CASE;TOP
A01-4088-08 CASE;BOTTOM
A13-2254-08 FRAME
A22-1344-08 SUB PANEL
A63-0316-08 PANEL
A83-0150-08 REAR PANEL
B09-0410-08 CAP
B31-0778-08 METER
B42-6147-08 LABEL;KENWOOD
B42-6146-08 S/NO.LABEL
B63-0304-08 INSTRUCTION MANUAL; JAP./ENG./CHIN
E04-0503-08 BNC RECEPTACLE
E04-0504-08 BNC RECEPTACLE
E23-1533-08 EARTH LUG
E30-1984-08 JIS POWER CORD
E30-1982-08 CEE POWER CORD
E30-1986-08 SAA POWER CORD
E30-1983-08 UL/CSA POWER CORD
E30-1985-08 BS POWER CORD
E68-0626-08 AC INLET
F50-0129-08 FUSE(5*20)
F50-0130-08 FUSE(5*20)
F15-0785-08 BLIND PLATE
F11-1528-08 SHIELD CASE
J02-0543-08 RUBBER FOOT
J21-8927-08 BRACKET
J11-0513-08 CLAMPER
K01-0564-08 HANDLE
K21-0959-08 KNOB
K21-0961-08 KNOB
L07-1552-08 POWER TRANSFORMER
R31-0810-05 V.R.
N09-4530-08 SCREW,SEMS BINDING M3.5X12
N09-4531-08 SCREW,FLAT HD M4X15
N09-4532-08 HEXAGON NUT M3
N10-2030-41 HEXAGON NUT M4
N10-2040-41 FLANGE NUT M3.5
N14-0644-08 PLAIN WASHER
N15-1030-41 WASHER
N19-0755-08 WASHER
N19-0754-08 WASHER
N16-0030-41 SPRING WASHER
N16-0040-41 SPRING WASHER
N30-2606-41 SCREW,PAN HD M2.6X6
N30-3012-41 SCREW,PAN HD M3X12
N30-3006-41 SCREW,PAN HD M3X6
N16-0030-41 SPRING WASHER
N32-2606-41 SCREW,FLAT HD M 2.6X6
N32-3006-41 SCREW,FLAT HD M3X6
N66-3008-41 SCREW,SEMS PAN HD M3X8
H53-0233-08 CARTON BOX
H10-2894-08 FOAMED STYREN PAD
H20-1750-08 VINYL COVER
W02-2355-08 MAIN UNIT
W02-2368-08 PANEL UNIT
W02-2366-08 RANGE UNIT
W01-0522-08 ACCESSORIES
2
VT-181 (Y80-2050-00) VT-181E (Y80-2060-00)
VT-181/VT-181E(K)INT98.4.910:31AM y[W 19

VT-181/VT-181E
10
PARTS LIST (ELECTRICAL)
*New Parts
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.
Ref. No Add-
ress Description
Parts No.
L : Scandinavia K : USA P : Canada R : Mexico
Y : PX(Far East, Hawaii) T : Europe E : Europe G:Germany
Y : AAFES(Europe) X : Australia M : Other Areas
indicates safety critical components.
J73-0539-08 PCB(UNMOUNTED)
F11-1527-08 SHIELD CASE
F01-2356-08 HEAT SINK
N30-3006-41 SCREW,PAN HD
K24-3015-08 PUSH KNOB
C101 C91-0501-05 CAP. FILM 0.047U 630 -
C102 CQ93M1H332J CAP. PLASTIC 3300P 50 J
C103 CC45FCH2H222K CAP. CERAMIC 2200P 500 K
C104 CC45FCH2H222K CAP. CERAMIC 2200P 500 K
C105 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C106 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C107 CC45FCH1H070D CAP. CERAMIC 7P 50 D
C108 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C110 CE04EW1E100Z CAP. ELECTRO 10U 25 Z
C111 CC45FCH1H010C CAP. CERAMIC 1P 50 C
C112 CC45FCH1H020C CAP. CERAMIC 2P 50 C
C113 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C114 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C115 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C116 CC45FCH1H120J CAP. CERAMIC 12P 50 J
C117 CC45FCH1H120J CAP. CERAMIC 12P 50 J
C118 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C119 CE04EW1C101Z CAP. ELECTRO 100U 16 Z
C121 CE04EW1C470Z CAP. ELECTRO 47U 16 Z
C122 CE04EW1A471Z CAP. ELECTRO 470U 10 Z
C123 CE04EW1C470Z CAP. ELECTRO 47U 16 Z
C124 CC45FCH1H220J CAP. CERAMIC 22P 50 J
C126 CE04EW1C331Z CAP. ELECTRO 330U 16 Z
C129 CE04HW1H010Z CAP. ELECTRO 1U 50 Z
C130 CE04HW1H010Z CAP. ELECTRO 1U 50 Z
C132 CE04EW1C470Z CAP. ELECTRO 47U 16 Z
C133 CE04EW1C470Z CAP. ELECTRO 47U 16 Z
C134 CE04EW1C102M CAP. ELECTRO 1000U 16 M
C135 CE04EW1C102M CAP. ELECTRO 1000U 16 M
C136 CQ92FM1H104J CAP. PLASTIC 0.1U 50 J
C137 CQ92FM1H104J CAP. PLASTIC 0.1U 50 J
C138 CQ92FM1H104J CAP. PLASTIC 0.1U 50 J
C139 CQ92FM1H104J CAP. PLASTIC 0.1U 50 J
C140 CC45FCH2H222K CAP. CERAMIC 2200P 500 K
C141 CF93AN2E104K CAP. METALIZED 0.1U 250 K
C142 CC45FCH1H120J CAP. CERAMIC 12P 50 J
C143 CC45FCH1H070D CAP. CERAMIC 7P 50 D
C147 CQ92FM1H103J CAP. PLASTIC 0.01U 50 J
C148 CC45FCH1H100J CAP. CERAMIC 10P 50 J
C150 CQ92BP1H122K CAP. PLASTIC 1200P 50 K
C152 CE04EW1A471Z CAP. ELECTRO 470U 10 Z
C153 CC45FCH1H010C CAP. CERAMIC 1P 50 C
D101 1N4148 DIODE
D102 1N4148 DIODE
D103 1N4148 DIODE
D106 1N4148 DIODE
D107 1N4148 DIODE
D108 1N4148 DIODE
D109 1N4148 DIODE
D110 1N4148 DIODE
1
*New Parts
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.
Ref. No Add-
ress Description
Parts No.
L : Scandinavia K : USA P : Canada R : Mexico
Y : PX(Far East, Hawaii) T : Europe E : Europe G:Germany
Y : AAFES(Europe) X : Australia M : Other Areas
indicates safety critical components.
D111 1N4148 DIODE
D112 1N4148 DIODE
D114 1N4148 DIODE
D115 1N4148 DIODE
D117 1N4148 DIODE
D118 1N4148 DIODE
D119 1N4148 DIODE
D120 1N4148 DIODE
D121 1N4148 DIODE
D122 1N4148 DIODE
D123 1N4148 DIODE
D124 1N4148 DIODE
D125 1N4148 DIODE
D126 1N4148 DIODE
D127 1N4148 DIODE
D128 1N4148 DIODE
D129 1N4148 DIODE
D130 1N4148 DIODE
D131 1N4148 DIODE
D132 1N4148 DIODE
D133 1N4148 DIODE
D134 W02 DIODE,BRIDGE
J1 E38-1758-08 JUMPING WIRE
J2 E38-1758-08 JUMPING WIRE
J3 E38-1759-08 JUMPING WIRE
J102 E38-1758-08 JUMPING WIRE
J103 E38-1759-08 JUMPING WIRE
J104 E38-1758-08 JUMPING WIRE
J106 E38-1758-08 JUMPING WIRE
J107 E38-1758-08 JUMPING WIRE
J108 E38-1758-08 JUMPING WIRE
J109 E38-1758-08 JUMPING WIRE
J110 E38-1758-08 JUMPING WIRE
J111 E38-1758-08 JUMPING WIRE
J112 E38-1758-08 JUMPING WIRE
J113 E38-1759-08 JUMPING WIRE
J114 E38-1758-08 JUMPING WIRE
J115 E38-1758-08 JUMPING WIRE
J116 E38-1759-08 JUMPING WIRE
J117 E38-1758-08 JUMPING WIRE
J119 E38-1759-08 JUMPING WIRE
J122 E38-1759-08 JUMPING WIRE
J124 E38-1759-08 JUMPING WIRE
J125 E38-1759-08 JUMPING WIRE
J126 E38-1759-08 JUMPING WIRE
J127 E38-1759-08 JUMPING WIRE
J128 E38-1759-08 JUMPING WIRE
K101 S51-1503-05 RELAY
K102 S51-1503-05 RELAY
P1 E40-7602-08 CONNECTOR 2P
2 E40-7604-08 CONNECTOR 2P
P3 E40-7606-08 CONNECTOR 4P
P4 E40-7604-08 CONNECTOR 2P
P5 E40-7604-08 CONNECTOR 2P
P6 E40-7605-08 CONNECTOR 3P
2
MAIN UNIT (W02-2355-08)
VT-181/VT-181E(K)INT98.4.910:31AM y[W 20