Harman Kardon AVR 300, Service Manual

Page: 9 / 91

SERVICE PROCEDURE
TEST EQUIPMENT REQUIRED
1) AM/FM Signal generator
2) Digital Multimeter
3) Distortion lever meter
2. VFD segment illumination & text
This set do not have VFD segment check function because lack of u-com memory size
So For your checking VFD states according to each function
Please refer to owners manual process.
1. All Clear
This service program can clear all memorized operations and functions.
When the POWER ON, press the "AM/FM" button while pressing the "PRO LOGIC"button.
After this, Preset memory will be set to these frequencies.
FM
AM
VERSION
120
230RDS
VERSION
120
230RDS
P1
87.5
87.50
P9
520
522
P2
88.0
88.00
P10
600
594
P3
90.0
90.00
P11
610
999
P4
95.0
95.00
P12
1000
1395
P5
98.0
98.00
P13
1400
1611
P6
99.0
99.00
P14
1500
P7
106.0
106.00
P15
1710
P8
108.0
108.00
ALIGNMENT PROCEDURES
1. FM MONO. Distortion adjustment
step
1
2
Input Signal Source
Connection
Signal generator
output to FM
antenna
terminal.(750hm)
Signal
Frequency
98MHz
Source Signal Output Level and
Modulation
1000uV/m (60dBu)
MONO 1kHz/
Dev. 75kHz
Reception
Frequency
98MHz
(P5)
Adjustment
Point
T804
T805
Adjustment
Value
0mV 0.5mV
(R831)
Distortion
level
at
TAPE-OUT
Minimum
4. FM STEREO Separation Adjustment
step
1
2
Input Signal Source
Connection
Signal generator
output to FM
antenna
terminal.(750hm)
Signal
Frequency
98MHz
Source Signal Output Level and
Modulation
same specification as
distortion adjustment.
Input only L channel
FM STEREO
same specification as
distortion adjustment.
Input only R channel
FM STEREO
Reception
Frequency
98MHz
(P5)
98MHz
(P5)
Adjustment
Point
VR803
VR803
Adjustment
Value
Output level
at TAPE-OUT
channel R
Minimum
Output level
at TAPE-OUT
channel R
Minimum
2. FM MUTING LEVEL ADJUSTMENT
Turn variable resistor VR801 and stop at position "TUNED" is not shown (not indicated), then again turn the variable resistor VR801 to the
opposite revolution and stop at a position "TUNED" is shown.
step
1
2
Input Signal Source
Connection
Signal generator
output to FM
antenna
terminal.(750hm)
Signal
Frequency
98MHz
Source Signal Output Level and
Modulation
10uV/m (20dBu)
MONO 1kHz/
Dev. 75kHz
Reception
Frequency
98MHz
(P5)
AUTO
SCAN
Adjustment
Point
VR801
Only confirm
Adjustment
Value
"TUNED"
indicate on VFD
"TUNED"
indicate on VFD
- 9 -
2
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
1395kHz
(230,230RDS)
1400kHz(120)
CT801
5. AM-Tracking Adjustment (MW)
Signal Generator
output to transmission
loop antenna
(standard required loop)
5mV/m(74dBu)
400Hz
MOD.30%
594kHz
(230,230RDS)
600kHz(120)
594kHz
(230,230RDS)
600kHz(120)
T801
Output level(L or R)
at
TAPE-OUT
Minimum
Output level(L or R)
at
TAPE-OUT
Minimum
6. AM IF Adjustment
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
T803
Output level(L or R)
at
TAPE-OUT
Maximum
Signal Generator
output to transmission
loop antenna
(standard required loop)
5mV/m(74dBu)
400Hz
MOD.30%
999kHz
(230,230RDS)
1000kHz
(120)
999kHz
(230,230RDS)
1000kHz(120)
Output level(L or R)
at
TAPE-OUT
Maximum
1
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
522kHz
(230,230RDS)
520kHz(120)
5mV/m(74dBu)
400Hz
MOD.30%
Signal Generator
output to transmission
loop antenna
(standard required loop)
522kHz
(230,230RDS)
520kHz
(120)
(P9)
T802 1.1V 1.2V
4. AM OSC Adujstment
300