Kenwood Tk760hg1 Manual

							21
TK-760HG/ 762HG
Test Equipment Required for Alignment
Test Equipment Major Specifications
1. Standard Signal Generator Frequency Range 136 to 174MHz
(SSG) Modulation Frequency modulation and external modulation
Output –127dBm/0.1µV to greater than –7dBm/100mV
2. Power Meter Input Impedance 50Ω
Operation Frequency 136 to 174MHz or more
Measurement Capability Vicinity of 100W
3. Deviation Meter Frequency Range 136 to 174MHz
4. Digital Volt Meter Measuring Range 1 to 20V DC
(DVM) Accuracy High input impedance for minimum circuit loading
5. Oscilloscope DC through 30MHz
6. High Sensitivity Frequency Range 10Hz to 1000MHz
Frequency Counter Frequency Stability 0.2ppm or less
7. Ammeter 20A
8. AF Volt Meter Frequency Range 50Hz to 10kHz
(AF VTVM) Voltage Range 1mV to 10V
9. Audio Generator (AG) Frequency Range 20Hz to 20kHz or more
Output 0 to 1V
10. Distortion Meter Capability 3% or less at 1kHz
Input Level 50mV to 10Vrms
11. 4Ω Dummy Load Approx. 4Ω, 10W or more
12. Regulated Power Supply 13.6V, approx. 20A (adjustable from 9 to 20V)
Useful if ammeter requipped
ADJUSTMENT
Lead wire  +
MICShield wire  –1 8
Tuning cable (E30-3383-05)
Adapter cable (E30-3383-05) is required for
injecting an audio if PC tuning is used.
See "PC Mode" section for the connection.
MIC connector
(Front view) Test cable for microphone input (E30-3360-08)
1 : BLC
2 : PSB
3 : E
4 : PTT
5 : ME
6 : MIC
7 : HOOK
8 : CM 
						

							22
TK-760HG/ 762HG
ADJUSTMENT
Adjustment Location

Switch (TK-760HG)
Adjustment Point

Note
• Flash memory
The firmware program (User mode, Test mode, Tuning
mode, etc.) and the data programmed by the FPU (KPG-56D)
for the flash memory, is stored in memory.  When parts are
changed, program the data again.
• EEPROM
The tuning data (Deviation, Squelch, etc.) for the
EEPROM, is stored in memory.  When parts are changed,
readjust the transceiver.

Repair Jig
• Chassis
Use jig (Part No. : A10-4010-02) for repairing the TK-
760HG/762HG. The jig facilitates the voltage check when
the voltage on the component side TX-RX unit is checked
during repairs.
• Extension cable
Part No. : E30-3404-05
L13
L11 L18
L15
L5
RSSI
TX-RX UNIT (A/2)
PLL/VCO
TC106
CV
TC109
PowerLED
Volume
up/down DisplayChannel
up/down
MIC jack
Programmable function keys
Ax4
Ax5
Extension cableAx2Bx2
Aø2.6 x 6
B M3 x 8 
						

							23
ADJUSTMENT
Measurement
Test-
equipmentUnitTerminalAdjustment
Unit Parts MethodSpecifications/Remarks Condition
Item
TK-760HG/ 762HG
Receiver Section
1.Discriminator1) Set test mode SSG Rear ANT TX-RX L5AF output maximum.• Wide CH : CH1 - Sig1 panel (A/2)
SSG freq’ AF VTVM ACC
: 161.050MHzK
Oscilloscope(EXT.SP)
: 149.050MHzK2
: 160.050MHzM
SSG output : –53dBm/501µV
SSG MOD : 3kHz
AF : 1.4V/4Ω
2. Sensitivity 1) Set test mode SSG Rear ANT TX-RX L11 RSSI voltage
• Wide
Select “SENS” in tuning mode.panel (A/2) L13 maximum.
“S.E.N.S” AF VTVM ACC L15
Adjust [120] Distortion (EXT.SP) L18
SSG freq’ meter
: 161.050MHzK
Oscilloscope: 149.050MHzK2AG
: 160.050MHzM
SSG output : –118dBm/0.28µVDVM TX-RX RSSI
SSG MOD : 3kHz (A/2)
AF output : 1V/4Ω
2) “S.ENS” Front
CH/
Adjust [
***] panel
SSG freq' .
: 148.050MHzK
: 136.050MHzK2
: 146.050MHzM
3) “S.E.N.S._.”
Adjust [
***]
SSG freq’
: 173.950MHzK,M
: 161.950MHzK2
3. Squelch 3 1) Set test mode Adjust to the
• Wide
Select “SQL3” in tuning mode.squelch threshold
“S.QL3” point.
Adjust [
***]
SSG freq’
: 148.050MHzK
: 136.050MHzK2
: 146.050MHzM
SSG output : –127dBm/0.1µV
SSG MOD : 3kHz (Wide)
  1.5kHz (Narrow)
2) “S.Q.L.3”
Adjust [
***]
SSG freq’
: 161.050MHzK
: 149.050MHzK2
: 160.050MHzMMeasurement
Test-
equipmentUnitTerminalAdjustment
Unit Parts MethodSpecifications/Remarks Condition
Item 1. PLL lock 1) Set test mode DVM TX-RX CV PLL TC106 7.5V±0.1V
voltage CH : CH3 - Sig1
Power meter(A/2)
RX F. conter
TX 2) PTT : ON (Transmit) TC109 7.5V
RX 3) CH : CH2 - Sig1 Check 1.0V or more
AUX : ON (talk-around mode)
TX 4) PTT : ON (Transmit)0.5V or more
Common SectionSince the TK-762HG cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment. 
						

							ADJUSTMENT
Measurement
Test-
equipmentUnitTerminalAdjustment
Unit Parts MethodSpecifications/Remarks Condition
Item
24
TK-760HG/ 762HG
3) “S.Q.L.3._.” SSG Rear ANT FrontCH/Adjust to the
Adjust [
***] panel panel squelch threshold
SSG freq’ AF VTVM ACC point.
: 173.950MHzK,MDistortion (EXT.SP)
: 161.950MHzK2meter
• Narrow 4) “SQL3
***.”
Oscilloscope
Adjust [
***]AG
SSG freq’
: 161.050MHzK
: 149.050MHzK2
: 160.050MHzM
4. Squelch 9 1) Set test mode
• Wide
Select “SQL9” in tuning mode.“S.QL9”
Adjust [
***]
SSG freq’
: 148.050MHzK
: 136.050MHzK2
: 146.050MHzM
SSG output : –114dBm/0.44µVSSG MOD : 3kHz (Wide)
  1.5kHz (Narrow)
2) “S.Q.L.9”
Adjust [
***]
SSG freq’
: 161.050MHzK
: 149.050MHzK2
: 160.050MHzM
3) “S.Q.L.9._.”
Adjust [
***]
SSG freq'
: 173.950MHzK,M
: 161.950MHzK2
• Narrow 4) “SQL9
***.”
Adjust [
***]
SSG freq’
: 161.050MHzK
: 149.050MHzK2
: 160.050MHzM
5. Squelch 1) Set test mode Check Squelch must be opened.
check CH : CH1 - Sig1~CH3 - Sig1(Wide/Narrow)
SSG output : –118dBm/0.28µV
2) SSG output : OFFSquelch must be closed.
(Wide/Narrow)
6. QT check 1) Set test mode
CH : CH1 - Sig4
SSG MOD
INT : 3kHz (Wide)
  1.5kHz (Narrow)
EXT : 151.4Hz
SSG system MOD DEV
: ±3.75kHz (Wide)
: ±1.85kHz (Narrow)
SSG output : 10dB SINAD level
2) CH : CH1 - Sig3 Check Squelch must be opened.
 CH1 - Sig5
 CH1 - Sig6 
						

							25
ADJUSTMENT
Measurement
Test-
equipmentUnitTerminalAdjustment
Unit Parts MethodSpecifications/Remarks Condition
Item
TK-760HG/ 762HG
1. Frequency 1) Set test modePower meterRear ANT FrontCH/Check 161.100MHz±50HzKSelect “FREQ” in tuning mode.F. counter panel panel 149.100MHz±50HzK2
PTT : ON160.100MHz±50HzM
Adjust [_
**]
2. Power 1) Maximum power Check More than 52W
output Set test mode
Select “HPOW” in tuning mode.“H.POW”
Adjust [256]
PTT : ON
3. High power 1) Set test mode 50.0W±2.0W
Select “HPOW” in tuning mode.“H.POW”
PTT : ON
Adjust [
***]
2) “H.P.OW”
PTT : ON
Adjust [
***]
3) “H.P.O.W”
PTT : ON
Adjust [
***]
4) “H.P.O.W.” 45.0WK,M±2.0W
PTT : ON 50.0WK2
Adjust [
***]
5) “H.P.O.W._.” 45.0W
PTT : ON
Adjust [
***]
4. Low power 1) Set test mode
Power meter10.0W±1.0WSelect “LPOW” in tuning mode.“L.POW”
PTT : ON
Adjust [
***]
2) “L.P.OW”
PTT : ON
Adjust [
***]
3) “L.P.O.W”
PTT : ON
Adjust [
***]
4) “L.P.O.W.”
PTT : ON
Adjust [
***]
5) “L.P.O.W._.”
PTT : ON
Adjust [
***]
5.
Power check1) Set test modePower meterRear ANT Check CH1, CH2
CH : CH1 - Sig1 panel : 50W±2W, 12A or less
 CH2 - Sig1 Ammeter DC IN CH3 : 45W±2W, 12A or less
 CH3 - Sig1
PTT : ON
Transmitter Section 
						

							ADJUSTMENT
Measurement
Test-
equipmentUnitTerminalAdjustment
Unit Parts MethodSpecifications/Remarks Condition
Item
26
TK-760HG/ 762HG
6. Modulation 1) Set test modePower meterRear ANT FrontCH/Make the de- (Wide/Narrow)
balanced MIC input : OFF Deviation panel panel modulation
• Wide Select “BAL” in tuning mode. meter waveform neat.
“_.BAL”
OscilloscopeDeviation meter filter
LPF : 3kHz AF VTVM Front MIC
HPF : OFF AG panel
De-emphasis : OFF
PTT : ON
Adjust [
***]
2) “_.B.A.L”
PTT : ON
Adjust [
***]
3) “_.B.A.L._.”
PTT : ON
Adjust [
***]
• Narrow 4) “_BAL
***.”
PTT : ON
Adjust [
***]
7. Maximum 1) Set test mode 3.95kHz (Wide)±50Hz (Wide/Narrow)
deviation Connect AG to the MIC 1.95kHz (Narrow)
• Wide terminal. (According to the
Select “MAX” in tuning mode.larger +, –)
“_.MAX”
AG : 1kHz/50mV
Deviation meter filter
LPF : 15kHz
HPF : OFF
De-emphasis : OFF
PTT : ON
Adjust [
***]
2) “_.M.A.X”
PTT : ON
Adjust [
***]
3) “_.M.A.X._.”
PTT : ON
Adjust [
***]
• Narrow 4) “_MAX
***.”
PTT : ON
Adjust [
***]
8. MIC 1) Set test mode Check±1.2kHz~1.7kHz (Narrow)
seisitivity CH : CH1 - Sig1±2.4kHz~3.4kHz (Wide)
check AG : 1kHz/5mV
PTT : ON
Adjust [
***]
9. QT deviation 1) Set test mode Front
CH/0.75kHz±50Hz (Wide/Narrow)
• WideSelect “FQT” in tuning mode.panel
“_.FQT”
Deviation meter filter
LPF : 3kHz
HPF : OFF
PTT : ON
Adjust [
***] 
						

							27
ADJUSTMENT
Measurement
Test-
equipmentUnitTerminalAdjustment
Unit Parts MethodSpecifications/Remarks Condition
Item
TK-760HG/ 762HG
2) “_.F.Q.T”Power meterRear ANT FrontCH/0.75kHz±50Hz (Wide/Narrow)
PTT : ON Deviation panel panel
Adjust [
***] meter
Oscilloscope3) “_.F.Q.T._.”
PTT : ON AF VTVM Front MIC
Adjust [
***] AG panel
• Narrow 4) “_FQT
***.” 0.35kHz
PTT : ON
Adjust [
***]
10. DQT 1) Set test mode Front
CH/0.75kHz±50Hz
deviationSelect “FDQT” in tuning mode.panel
• Wide “F.DQT”
Deviation meter filter
LPF : 3kHz
HPF : OFF
PTT : ON
Adjust [
***]
2) “F.D.Q.T”
PTT : ON
Adjust [
***]
3) “F.D.Q.T._.”
PTT : ON
Adjust [
***]
• Narrow 4) “FDQT
***.” 0.36kHz±40Hz
PTT : ON
Adjust [
***]
11. DTMF 1) Set test mode Front
CH/3.0kHz±0.2kHz
deviationSelect “DTMF” in tuning mode.panel
• Wide Deviation meter filter
LPF : 15kHz
HPF : OFF
PTT : ON
Adjust [
***]
• Narrow 2) “DTMF
***.” 1.5kHz±0.1kHz
PTT : ON
Adjust [
***]
12. TONE 1) Set test mode Front
CH/3.0kHz±0.1kHz (Wide/Narrow)
deviationSelect “TONE” in tuning mode.panel
• Wide Deviation meter filter
LPF : 15kHz
HPF : OFF
PTT : ON
Adjust [
***]
• Narrow 2) “TONE
***.” 1.5kHz
PTT : ON
Adjust [
***] 
						

							ACE
BD
1
3
5
7 2
4
6
TK-760HG/ 762HG  PC BOARD VIEWS
28
DISPLAY UNIT (X54-3270-10) : TK-760HG
Component side viewDISPLAY UNIT (X54-3270-10) : TK-760HG
Foil side view
D804
D803
D805D802
J72-0683-02
CN801
MBL
5C
CE
CL E
E
SB
DI1 2
7 8
C801
C802
C803
C804C805 C806
C807
D801
D808
IC801
B
C
E
Q801
R801R802
R803
R804
R805
R806
R808
R809
L801
1
16
17 32 4849
64
33
D804D803D805D802
J72-0683-02
CN801
1 MBL
5C
CE
CLE
E
SB
DI2
78
C801
C802
C803
C804 C805C806
C807
D801
D808
IC801
B CE Q801
R801R802R803
R804
R805
R806
R808
R809
L801
1
16
173248 49
64
33
Component side Foil side 
						

							J H F D
BI
GECA
1
3
5
7 2
4
6
2930
PC BOARD VIEWS   TK-760HG/ 762HG
Component side
Foil side
D801
D804D803
J72-0684-02
CN801
1
MBL
5C
CE
CL E
E
SB
DI 2
7 8
IC8011
12
13 24 3637 48
25R803 R805
Q801
Q802Q803
Q805
R810
R809C801
C806
C808
C812
R812
R804
C804 R802
C803 C802R801
R808
C807 C805
R806 D802
R807 L801Q804
Q806
Q807
GS
D
G
S D G
S D GS
D
Q808
Q809
R813
R814
R815
R816D801D804
D803
J72-0684-02
CN801
1
MBL
5C
CE
CLE
E
SB
DI2
78
IC801 1
12
132436 37 48
25 R803R805
Q801Q802
Q803Q805
R810
R809 C801
C806
C808
C812
R812
R804
C804R802
C803C802 R801
R808
C807C805
R806
D802
R807L801 Q804
Q806Q807
G
SD
G
SDGS
DGS
D
Q808Q809
R813
R814
R815
R816
CN101
RX
(ST)6
1 HT
E
8CL
MD
CV J72-0676-02
C107
C114
C121 C118 C111
C123 C117D105
R116C110 R101
R102
TC106 L101
TC109 R117
R106
R104R105
C113
C124
R112 R113L102
C112 D101
D102
D103
D104
L108 L107
Q101
G
S D
G
S D
Q103 L105
L103
L104 C102 C126
C120 C119
R110C125
R107C115
C104
C105R103 R108
C116 L110L109
C122
R115 R109
R114 R111 Q102
Q104 Q105
Q106L106
C127 L111
L116
L112
CN101
RX
(ST)HTE 8CLMDCV 1
6
J72-0676-02
L103L104
C102
C126 C120
C119R110
C125 R107
C115C104C105
R103
R108 C116
L110
L109C122R115
R109R114
R111 Q102 Q104
Q105Q106
L106C127
L111 L116
L112
C107
C114
C121C118C111
C123C117 D105
R116 C110R101
R102
TC106L101
TC109R117
R106
R104 R105
C113
C124
R112R113 L102
C112D101
D102
D103
D104
L108L107
Q101
G
S D
G
S D
Q103L105
PLL/VCO (X58-4670-XX) -10 : K,M -11 : K2 Component side view
PLL/VCO (X58-4670-XX) -10 : K,M -11 : K2 Foil side view DISPLAY UNIT (X54-3280-10) : TK-762HG
Component side viewDISPLAY UNIT (X54-3280-10) : TK-762HG
Foil side view
Component side Foil side 
						

							A
BC
DE FGHIJ
KLMNO
PQRS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C91
C67
R93
C104
Q32
L24
L20
L25
IC5
IC6
IC3
C10
C7
C3C60
C107 C75
Q9
C54
XF1
CN4
CN5C50
C131
C117C161
C160
R68 C74Q35
C46
C43
R44
IC4R78
IC7
C103
C98C81R71
Q12
C93 C99
C1
C5
C8
C11
C2 C6 C9 R201
C141
C144
C134
IC12
C32
C203
C207 C210
C212
L18
C213
L15
C138D37 C211
L13
L11
C86
C64CF2 CF1
R87 C96C97
C16
C17
C18
C19
C21 C15 C14 C13
R9
R10
R11R59
R19
C72
Q2
R91 R37R34
R56
R86D9
D41C40
R53 R52
R51
C84 IC11
R8
R7
R2 R202R66
R49
R40
TH1R177
R62
R57C61C270
R1R3
R4
C45
C70
R50 R75
C165
R131
C79 C80
R67
R63R48
R89 R77R90
R221
R64R70Q11R65
R79 R82
R85
R73 L21
C198
C214D34
L22 C171
C208
R76
C83
IC13C166 D25D26
C172 C114
C195
C30
C35
C47
C63 L23
Q8
R188
Q37
R193
D40
L26
C271
Q38
R197
L5
TP1C77
R208
TV
8R
CV
J72-0759-12  A/2
+
+
+
A1 : X58-4670-XX8CL +
+
1 10 11
20
1
8916
+
G
OI
+
+ +
+
+ +
1 4 5
8+
1 12 13
24++ +
5C
G
SD
1 4 5
8
SBGND
DEO
DTC
IGN
DI
ME
MI
PTT
SQ 1
8
RSSI
GND
E
C
B
O
G
IGND
B
+
+
J1
EXT. SP
CN7
1
3PA/LI
SPI SPO
CN8
2
1 E
10
SP +
+
CN3
SB
E
HOR3
1
1
1
3AM
MM
EMG/TXS
G DS
CN115
1 GND
MIO
MII
AFI
AFO
ALT
AUX2
AUX4
AUX1
AUX3
NC
AUX6
AUX5
5S
8C
1234 IC400
RX
(ST)
HT
E
8CL
MD
CV
Component side
Foil side Pattern 1
Pattern 2
Pattern 3
Pattern 4
TK-760HG/ 762HG  PC BOARD VIEWTX-RX UNIT (X57-5950-XX) (A/2) Component side view
-14 : TK-760HG K,M -15 : TK-762HG K -16 : TK-760HG K2 -17 : TK-762HG K2Ref. No.Address
IC3 10H
IC4 12M
IC5 12I
IC6 10M
IC7 9L
IC11 10J
IC12 6O
Ref. No.Address
IC13 8R
IC400 2I
Q2 12R
Q8 7G
Q9 10F
Q11 11G
Q12 11G
Ref. No.Address
Q32 4O
Q35 12L
Q37 11L
Q38 12R
D9 9G
D25 5O
D26 4L
Ref. No.Address
D34 5E
D37 7D
D40 11M
D41 11G
31