Panasonic KX-G8300 Quick start guide

ORDER NO. KM49110828A2
Service
Manual
and Technical Guide
KX-G8300
for Germany)
MARINE RADAR
Please use this manual together with the service manual for model No. KX-G8300, order No. KM49004195C1.
This service manual indicates the main differences between; original KX-G8300 (KM49004195C1) and KX-G8300 for
Germany (KM49110828A2).
m PARTS COMPARISON TABLE
Part No. Pes/
Ref. No. KX-G8300 KX-G8300 for Germany Part Name & Description Set Remarks
KM49004 195C1 KM49110828A2
KX-G8300M0 (Display Unit
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VR1[EVNDXAA03B52__— | PQNB3A00B13M_ | Variable Resistor, 1kKQ(B)
[VR2_[EVNDXAA03B53_— [EVM38GA00B53 [Variable Resistor, 5000(B) | tT
RI20 [EXBP84i3K | senenee sd Resistor Array dT eto
RIg7 TS PQAR1OXI221 (2200, OW, Carbon C‘iTCS Tf Aiton
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pRos2 fe CSPPQARTOXIGBO —*[6BQVIOW, Carbon Tito
R933-970 — [PQ4R10XJ101_ 1000, 1/10W, Carbon C‘C;SSC*Y OS CL Aiton
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[C14 [PQCBCIHI21KB_[PQCUV1H121UC_———sC*'420PF,50V,Chip CT
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Panasonic

KX-G8300 |
Part No. Pes/
Ref. No. KX-G8300 KX-G8300 for Germany Part Name & Description Set Remarks
KM49004195C1 KM49110828A2
[C316 [ECQM1H394JV_—— [ECQV1H394JZ——*[0.39uF, 50V, Polyster
caso | —CSECQVAH184NZ SS 0.18uF, 50V, Polyster Ci‘; AC Addition
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KX-G8300DM (Antenna Unit
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C633 PQCBC1H102KB PQCBC1H680JL [68PF,50V,Ceramic CE
C634 PQCBC1H681KB PQCBC1H821KB [S20PF,50V, Ceramic CT
C635 PQCBC1H471KB PQCBC1H221KB 220PF, 50V, Ceramic ie
PQLT1YOM1A PQLT1Y9M1B Transformer a onl
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ERDS2TJ394 ERDS2TJ222 2.2kQ, 1/4W, Carbon 1 |]
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lm NOTE (Page 2)
A general class FCC licence is required to service this
product. Please refer all service to qualified service facility. ap Non
[KX-G8300 (KM49004195C1)} [KX-G8300 for Germany (KM491 10828A2)]

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KX-G8300 KX-G8300 |
CIRCUIT BOARD (PQUP824YA)
Signal Processor PCB
(Component View)
|
K ® KXG8300XG
Printed in Japan

ORDER
NO.
KM49004195C1
Service
Manual
and Technical Guide
MARINE
RADAR
KX-G8300
ered
(Model KX-G8300DM)
(Model KX-G8300MO)
Matsushita Services Company Matsushita Electric Panasonic Sales Corns pany,
Division of Matsushita Electric of Canada Limited Division of Matsushita Electric
Corporation of America 5770 Ambler Drive, Mississauga, of Puerto Rico, Inc.
50 Meadowland Parkway, Ontario, L4W 2T3 San Gabriel Industrial F7ark
/ mi
Secaucus, New Jersey 07094 65th Infantry Ave. Km.9-5
,
Carolina,
Puerto
Rico
0630

KX-G8300
When you refer to the serial number, write down all 11 digits. The serial number may be found on the label affixed to the
bottom of the unit.
TABLE OF CONTENTS
Features: 3 sickciacd eae th ee ede dos ees 2
CRT Display Safety Precautions ...............++.44- 2
Specifications < viv; sschos sauce awe eee pee ewes 3,4
Location of Controls .............. eee eee teens 5,6
Installation and Connection ...............00 eee 7~15
Operations ;.ci0ehire ueiva ta nes as dalecbies Gee EONS OG Saale 16
Important Notice ........... cece eee eee eee eee 16
Disassembly Instructions ...............-s0e0ee 17-21
Water Resistant Check Points ................+.- 22, 23
MaintenanC@> 20... cc,s:cve ee Loi cite grade dine eel Sies.s 24, 25
Wiring Connection Diagram.................. 26, 27, 31
Circuit Board ..... 0... cee ees 28, 32, 37~40
Schematic Diagram ..............2 02 008- 29, 30, 33~36
Circuit Operations ........ 2... cc eee ee eee eee 41-53
Adjustments ........ 0... cc cece ce eee ee eee ee 53-62
Troubleshooting Guide ........... 0... ee eee eee 63~72
Tools for Servicing ......... 0. cc cece ee ee eee eee 73
Service Extension cord connecting Method ............ 74
Cabinet and Electrical Parts Location ............. 75~78
How to Check the CRT Display for Servicing .......... 79
Accessories and Packing Materials ..............065 80
Replacement Parts List ........... 2.02. cee eee eee 81~88
FEATURES
7-inch daylight bright high resolution display
3kW power :
Easy view screen
High-speed LSI graphic controller
Screen (frame) memory
8-level target quantization
Compact radome antenna
Dual pulse rates and pulse lengths
Two EBLs (Electric Bearing Lines)
Two VRMs (Variable Range Markers)
Echo freeze with auto return
Inter-target distance measurement between two targets
Off-center (an additional half radius in any direction)
(exept 24NM Range mode)
Flexible guard zone with audible alarm
Multi-interval plotting to show the track of moving targets
on the display
On-screen alpha-numeric readouts for Range, Rings,
Distance, Plot, Interference Rejection, Expansion,
Freeze, EBL, and VRM
1.8 foot antenna
Loran interface (NMEA 0183 interface Format),
LAT/Long, Vessel Speed, Range/Bearing to waypoint.
Back Lighted Keypad
Target Expansion at Ranges greater than 3NM.
8 CRT Brilliance Levels
Power Saving Mode for reduction of battery Consumption
CRT DISPLAY SAFETY PRECAUTIONS
X-Radiation
Warning: The only potential source of X-Radiation is the picture tube. However when the high voltage circuitry is
operating properly there is no possibility of an X-Radiation problem. The basic precaution which must be
exercised is to keep the high voltage at the following factory recommended level.
Note: It is important to use an accurate periodically calibrated high voltage meter.
1. To measure the high voltage, connect a high voltage meter to the unit (© to CRT Ground Strap and @ to CRT
anode).
2. Turn Brightness control fully counterclockwise (minimum brightness).
3. Measure the high voltage. The high voltage meter (electrostatic type) reading should indicate 12.0 kV+
1.0 kV.
4. If the meter indication is out of tolerance, immediate service is required to prevent the possibility of premature
component failure.
5. To prevent X-Radiation possibility, it is essential to use the specified picture tube. Any attempt to substitute a tube of
a different manufacturer or color can result in a serious X-Radiation hazard and component failure.
A general class FCC licence is required to service this product. Please refer all service to qualified service facility.

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SPECIFICATIONS
eANTENNA
1. Type: 1.8 ft. (54 cm) (Nominal length)
Center-fed waveguide slot array, Enclosed in the radome
2. Rotation Speed: 24 r.p.m. nominal
3. Beam width: Horizontal 4 degrees nominal
Vertical 25 degrees nominal
4. Side lobe: 21 dB
5. Polarization: Horizontal
eTRANSMITTER
1. Modulation Type: SCR Line Type Modulator
2. Frequency: 9410+30 MHz, PON
3. Magnetron Type: 9M302 ro Equivalent
4, Peak Power: 3kW nominal
5. Pulse width and 0.08 ps/prf 2500 Hz (0.25 to 1.5 NM)
Repetition Frequency (prf): 0.5 ws/prf 1000 Hz (3 to 24 NM)
eRECEIVER
1. Type: Superheterodyne
2. Intermediate Frequency: 60 MHz
3. Mixer and local OSC: MIC (Microwave Integrated Circuit) with limiter
4. Duplexer: Circulator
5. Noise Figure: 6 dB nominal
eMAIN UNIT (DISPLAY AND MAIN CONTROLER)
1. Display type: Raster Scan, Daylight viewing
2. CRT: 7 inch Green Monochrome CRT
3. Picture Quality: Non-interlaced Scanning
Effective Diameter 3.74” (95 mm)
pow ox] os [os st [*[@]
es ovo ovs|oas fos [1 |e | |
4. Range &
range rings interval:
(Unit: NM)
5. Range Discrimination: Less than 66 ft. (20 m)
6. Minimum Range: Less than 82 ft. (25 m)
7. Range Accuracy: 1.1% or 33 ft. (10 m), whichever is the greater value
8. Bearing Accuracy: 1 degree
ePOWER SUPPLY
1. Input Voltage: 10.8~42 VDC
2. Power Consumption: 57W approx. (25W approx. in saving mode)
3. Protection: Input Overvoltage
Reverse Polarity protection

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eENVIRONMENTAL CONDITIONS
1. Ambient Temperature: —13°F to +158°F (-25°C to +70°C) for Antenna unit
+5°F to +131°F (-15°C to +55°C) for Main unit
2. Relative Humidity: 95% at 104°F (40°C)
3. Protection against Water: Water resistant for Antenna unit-JIS Grade 6
Splash proof for Main unit-JIS Grade 4
4. Wind Survival: Relative wind 100 knots
eCOMPASS SAFE DISTANCE
fF Standard Compass Steering Compass
9.8 ft. (3.0 m) 5.6 ft. (1.7 m)
1.6 ft. (0.5 m) 1.3 ft. (0.4 m)
eSIZE AND WEIGHT
1. Weight (Antenna): 20.0 Ibs (9.1 kg)
2. Size:
9.77” (248 mm)
24” (610 mm
3. Weight (Main unit): 11.8 lbs (5.34 kg)
4. Size:
14.6” (372 mm)
10.6” (270 mm)
9.84” (250 mm)
10.7” (270 mm)
ae (219 mm
Fig. 1
Design and specifications are subject to change without notice.

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LOCATION OF CONTROLS
@Power ON/OFF Button
Used to turn ON the power source. Press this and TX/STBY button
simultaneously to turn off the unit.
@®Transmit/Standby (Power Saving Mode) Button
Switches between Transmit/Standby modes. /Set the Power Saving Mode.
@Saving Mode Indicator
This indicator lights in green when the system is in the Power Saving Mode.
@EBL/VRM Position Button
Used to measure the distance and bearing when the target is focused on by
turning EBL counter clockwise and reduction VRM.
©®EBL1/EBL2 ON/OFF Button
Turns ON/OFF EBL1 and EBL2.
©VRM Shift ON/OFF Button
Displays a third VRM on the screen to measure the distance between two
targets.
@Fixed Range Ring Display (Plot) Button
Displays/removes the fixed range rings./Displays sequential tracks of other
vessels.
®©@Anti Clutter Rain (Interference Rejection) Button
Eliminates rain clutter reflection from the screen./Turns on and off the
interference rejection (IR) mode when pressed after the FUNC button.
@Memory Display (Memory Storage) Button
Memorizes the current display or erases the memory./Recalls or eliminates
the memorized display to or from the screen.
Heading Marker Off (EBL & VRM Clear) Button
Temporarily removes the heading marker from the screen./Deletes EBL and
VRM.
@ Range (Down) Button
Reduces the range of measurement.
@ Receiver Tuning Control Knob
Adjusts the receiver sensitivity to the transmitter.
® Anti Clutter Sea Control Knob
Eliminates the unwanted echoes from the near by sea surface.
Receiver Gain Control Knob
Adjusts the receiver gain.
@EBL/VRM Position Button
Used to measure the distance and bearing by sighting the target with the
clockwise turn of EBL and the enlargement of VRM.
@ VRM1/VRM2 ON/OFF Button
Turns ON/OFF VRM1 and VRN2.
@ Off Center Button
Shifts the position of your own vessel 50% backward from the bearing
indicated by EBL. This enables the user to observe a target located farther
away.
@ Guard Zone Alarm (Display Freeze) Button
Sets or eliminates an alarm zone. When an alarm zone is set, the entry of an
terget is informed with an alarm./Temporarily stops the display motion.
@ Display Brilliance Control (Panel Illumination Dimmer) Button
Adjusts the display brilliance./Adjusts the illumination of the control panel
when pressed after the FUNC button.
@ Target Expansion (Navigation Data Display) Button
Used for target expansion./When Loran is installed, pressing the FUNC
button and this displays the longitude and latitude of own position range and
bearing to a waypoint.
@ Function Button
Allows the user to select a function shown in blue reversed print on buttons,
@)@. ©. ©. @,. @ ®, and@.
@ Range (Up) Button
Expands the range of measurement.
Main Unit
(Display and Main Contoler)
Fig. 2

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Display Information
Heading Marker
OOCCCE VRM 1/2
3NM
0.5
Fixed Range Ring
Inter-Target Distance
Measuring Origin
Inter-Target Distance Indication
(VRM-3)
Plot Interval Elapsed Time and Time Indication Main Unit
Function Indication
Alarm/Zone/
<Brilliance> Indication
Display Freezing Indication
Anti Clutter-Rain Indication
Target Expansion Indication
Interference Rejection Indication
Receiver Tuning Indication
Range Indication
Range Ring Interval
Ly 40°37.15N
EBL 1 Relative Bearing Indication EEE TA
EBL 2 Relative Bearing Indication
VRM 1 Distance Indicatoon
VRM 2 Distance Indication
Inter-Target Distance Indication
(VRM-3)
© Latitude, Longitude Indication
© Way Point Bearing and Range Indication
© Speed Indication
Fig. 3 @ Marks are indicated by Loran.
a
SPD
WP
P52.5
00.0KT
180.0°M
Screen Memory Indication

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INSTALLATION AND CONNECTION
Mounting the Antenna Unit ( Size
MOUNTING PROCEDURE:
Refer to an installer for the installation
of the antenna unit.
(mm)
24” (610)
|
1. Drill six holes in the radar mounting position where the antenna unit is to be mounted using the included template.
Fig.4 \
Ship's Bow
t
6.30" (160mm)
@0.47" (©12mm)
Hes Template /
Holes
>
Ship’s Bow
Fig. 5 20.98" (025mm)
©0.39" (10mm)
2. Remove the four bolts from the bottom of the antenna unit.
Bottom
Bolts (four)
Fig. 6
3. Loosen the four bolts at the outside edge of the antenna unit.
Bolts (four)
Fig. 7

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4. Remove the cover, be careful not to damage the rubber gasket.
+ Cover
Fig. 8
5. Install the antenna unit on the radar mount.
If
the
thickness
of
the
radar
mount
is
more
than 0.28
inch
(7mm),
use
the
extra
set
of
included
bolts
(1"
(25
mm)).
Cable Entry Point
Stern
Cable Entry
Flat
Washer
Vent
Tube
Spring Washer
Bolt Do not apply excessive
— torque to fix the bolts.
gj 0.78” (20mm) (Fixing torque: 200 to 250kg
or cm)
&— I" (25mm)
Make sure the antenna unit is installed in the proper direction of the ships bow and stern.
The cable entry must face in direction of the stern.

KX-G8300
6. Remove the four screws from the cable clamping plate.
7. Remove the rubber gasket.
8. Remove the transmitter cover after removing the six screws.
Cautions: Do not touch anything inside the transmitter cover. Do not arrow any iron or steel items to come near
the magnetron.
Six Screws
Four Screws
Cable Clamping plate
Rubber Gasket
Transmitter Cover
9. Run the cable through the hole at the bottom of the antenna unit through the rubber gasket and through the cable
calmping plate and connect the four plugs from the cable to the jacks as follows.
© 2-pin plug to CN 604 on the receiver PCB
@ 9-pin plug to CN 602 on the receiver PCB
@ 4-pin plug to CN 805 on the transmitter PCB
¢ 7-pin plug to CN 803 on the transmitter PCB
7)
2-Pin Plug
9-Pin Plug
\
@
7-Pin Plug
4-Pin Plug CN 602 (9-pin)
CN 604 (2-pin)
Rubber Gasket
Fig. 11

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10. The following plugs are connected at the factory.
Make sure the connections are tight and proper.
(1) CN 603 (6-pin) on the receiver PCB and CN 802 (6-Pin) on the transmitter PCB
(2) Motor base and CN 804 (3-pin) on the transmitter PCB
(3) Motor base and CN 801 (5-pin) on the transmitter PCB
CN 802 (6-pin)
11. Leaving a little less than one and half inch of the cable (before the break out) exposed above the clamping plate, replace
the four screws and tighten down the plate.
Make sure the rubber gasket seals well around the cable.
To be tied the ground wire with screws as following picture.
Ground Wire
| 1.19” (3em)
Cable clamping plate
Fig. 13
NOTE:
Take care not to expose too much cable above the plate because it may be hit by the antenna’s rotation.

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12. Secure the cables with the plastic clamps.
The clamps are to prevent the cables from hitting the antenna.
13. Using the six screws, replace the transmitter cover.
Six Screws
Cord Clamps
14. Replace the antenna unit cover aligning the marks.
Tighten the bolts of the antenna unit cover temporarily. Secure them tightly after completing the Heading Adjustment.
Face the < mark in the direction of the ship’s bow.
Ship’s Heading Direction
~
Mate the marks Mate the marks.
Fig. 15
—_— _

KX-G8300_
Mounting the Main Unit
Mounting Procedure:
1. Mark five screw positions on the platform where the main unit is to be mounted using included template.
Five Screw Positions
ag
oe
Fig. 16
Bracket Ass’y Footprint
2. Unfasten the knob bolts and remove the display unit (in the direction of the arrow) from the bracket ass’y.
Display Unit
Knob Bolt
Bracket Ass'y
Fig. 17
3. Install the bracket ass’y on the surface using the five screws (included).
Bracket Ass’y
Self-Tapping Screw
E 0.78” (20mm)
Spring Washer
Flat Washer
Fig. 18

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4. Re-mount the main unit on the bracket ass’y.
l
{ Knob Bolt
v/s
1. Connect the cable from the antenna unit to the back of the main unit.
Align the pins carefully.
Fig. 19
Connection
CONNECTING PROCEDURE:
Antenna Unit
Main Unit |
©
<=—— Antenna Cable
_ Ce)
©
Fig. 20
Fa
[e*)

KX-G8300
2;
3.
Connect
the
ground
wire
to
the
ground
terminal
at
the
rear
of
the
main
unit
and
connect
the
other
end
to
the
main
ground
on
the
boat.
Main Unit
Flat Washers
Spring Washer
“G
To Main Ground System
Connect
the
power
cable
supplied
to
the
DC
IN
jack
at
the
rear
of
the
main
unit
and
connect
the
other
end
to
the
DC
battery
(10.8
to
42V
DC)
and
to
the
earth
ground
on
the
vessel.
s@
DC IN 10.8V-42V
Opened
Rubber Cap
Open
the
rubber
cap
backward
and
secure
the
nut
to
fix
the
connector
to
the
main
unit.
Close
the
rubber
cap
around
the
nut
after
connecting
the
cable.
When
removing
the
connector,
pull
the
rubber
cap
slightly
backward
to
allow
space
between
the
cap
and
the
main
unit,
then
open
the
cap
backward
to
loosen
the
nut.
To Main ground
2 on the boat
) @
Black White
ae
10.8-42V DC
Fig. 22

KX-G8300
4. External alarm speaker (4 to 8 ohm) can be connected to the main unit.
Connect the cord from the external alarm speaker to the EXT SP jack at the rear of the main unit.
External Alarm
Speaker 4~80.
40, — Rated at more than 0.8 watts
80 — Rated at more than 0.4 watts
Fig. 23 WY
5. Loran Receiver (NMEA 0183 interface format only) can be connected to the main unit.
Connect the cable from the Loran receiver to the NAV jack at the rear of the main unit.
Opened
@); Loran © Cold Rubber Cap
@ @ @; Loran @ Hot
eho) @) @; (No connection)
@), (No connection)
Open the rubber cap backward and
secure the nut to fix the connector to
the main unit. Close the rubber cap
around the nut after connecting the
cable. When removing the connector,
pull the rubber cap slightly backward
to allow space between the cap and
the main unit, then open the cap
backward to loosen the nut.
Main Unit
'
NAV
Loran Receiver
(only NMEA0183
INTERFACE FORMAT)
WA
Fig. 24
ar
on

LO GetsKiUt)
OPERATIONS
Measuring the Target
MEASURING THE Each press of
RANGE TO TARGET to select VRM1 or VRM2
WITH VRM. alternately.
Press or
to move the VRM to the
target.
3 Distance displays at the
bottom right.
MEASURING THE Each press of
TARGET BEARING WITH to select EBL1 or EBL2
EBL. alternately.
Press (Zany) OF
to adjust the EBL to the
targets.
Bearing dsiplays at the
bottom left.
Setting the Alarm
1 SETTING THE RANGE Press to set an
inner range and an outer
range.
=
Ls)
_—
Le)
[e)
2 SETTING THE Press (=) to set the
BEARING right and left bearing limits.
Press to set the
smaller area of sphere
encircled, for a larger area
setting, the second press
within 2 seconds of the first
one.
3 SETTING THE ALARM
ZONE
Outline of Operation
1 THE POWER SOURCE Press until beep is
TURNED ON. heard.
Warm-up begins with
indication of time and wait
for 2 minutes 30 seconds.
Press to start the
transmitter.
Press or
to select the Radar Range.
Press to select an
STARTING
TRANSMITTER.
»
3 CHANGING RANGE
SCALE.
4 ADJUSTING DISPLAY
BRILLIANCE. appropriate brilliance of
display.
5 ADJUSTING Turn (©) to make clear
RECEIVER GAIN. and distinct target images
appear.
Turn “~O to adjust
the turning so as produce
the clearest screen
presentation.
e
Turn C) or press
6 TUNING THE
RECEIVER.
N“ ELIMINATING SEA
CLUTTER OR A) to eliminate reflection
RAIN/SNOW echoes.
CLUTTER. According to the Sea and/or
Weather conditions.
IMPORTANT NOTICE
If the transceiver module is placed on a steel workbench, great care should be taken to avoid deterioration of the magnetron
mounted on the module. Follow the guidelines given in Fig. 25.
Wooden Block
Fig. 25
Vii, Magnetron
Separate the module from
magnetic substancesby
2 inches or more.
Steel Workbench
Wooden Block