Service Procedure; Alignment Procedures - Harman Kardon AVR45 Service Manual

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.
VERSION P1 P2 P3
120 87.5 88.0 90.0
FM
230,230RDS 87.50 88.00 90.00
VERSION P9 P10 P11
120 520 600 610
AM
230,230RDS 522 594 999
2. VFD segment illumination & text
This service procedure will illuminate all segments by the following steps
(1) Press the Power ON buttn(Push Knob) while you are holding the TEST TONE (dts) button.
(2) Then "TEST MODE" character will be shown on VFD Display.
(3) This set do not have Auto VFD segement check function. So For your checking the VFD
states according to each function, Please press any function button which you want to test.
(4) for example : Tape monitor & CD
1) Press the POWER ON button(push knob) while you are holding the TEST TONE (dts) button.
2) Then "TEST MODE" character will be shown on VFD Display.
3) Press the t.MON button on Front, then you are able to see " TAPE MONITOR" Character on VFD Display.
4) Press the CD button on FRont, then you are able to see "CD" Character on VFD Display.
BUTTON SEGMENT(Large)
ST. POWER POWER
T. MON TAPE MONITOR
CD CD
DVD DVD
VID 1 VIDEO 1
VID 2 VIDEO 2
VID 3 VIDEO 3
6 CH 6 CH DIRECT
AM/FM TUNER
TUNING TUNING DOWN
TUNING TUNING UP
PRESET SCAN PRESET SCAN
PRESET PRESET DOWN
PRESET PRESET UP
TUN. MODE(RDS) NO RDS
DIGITAL DOLBY AC-3
PRO LOGIC PRO LOGIC
3 STEREO 3 STEREO
HALL 1 HALL 1
HALL 2 HALL 2
THEATER THEATER
TEST TONE TEST TONE
SURR. OFF SURR OFF
SPEAKER FRNT SPEAKER
CHANNEL FRONT L LEV
DIG. SELECT COAXIAL
DELAY S DELAY TIME
MUTE MUTE
VOLUME UP VOLUME UP
VOLUME DOWN VOLUME DOWN
SET SET
COMM DOWN
COMM UP
P4 P5 P6 P7 P8
95.0 98.0 99.0 106.0 108.0
95.00 98.00 99.00 106.00 108.00
P12 P13 P14 P15
1000 1400 1500 1710
1395 1611
SEGMENT(Small)
TUNED, MONO, STEREO, AUTO, MEMORY, PRESET, 88
RDS, PTY, CT, RT
DIGTAL, AC-3, NIGHT
PRO LOGIC, PCM
3-STEREO
HALL 1
HALL 2
THEATER
ANALOG, OPT, COAX
MUTE
TEST EQUIPMENT REQUIRED
1) AM/FM Signal generator
2) Digital Multimeter
3) Distortion lever meter

ALIGNMENT PROCEDURES

1. FM MONO. Distortion adjustment
Input Signal Source Signal Source Signal Output Level and
step
Connection Frequency
1 Signal generator
output to FM
98MHz
antenna
terminal.(750hm)
2
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.
Signal
Input Signal Source Source Signal Output Level and
step
Frequency
Connection
Signal generator
1
output to FM
98MHz
antenna
terminal.(750hm)
2
3. FM STEREO Separation Adjustment
Signal
Input Signal Source Source Signal Output Level and
step
Frequency
Connection
same specification as
1 Signal generator
output to FM
98MHz
antenna
same specification as
2 terminal.(750hm)
9
- 9 -
Reception Adjustment
Modulation Frequency Point
1000uV/m (60dBu)
T804
MONO 1kHz/ 98MHz
(P5)
Dev. 75kHz
T805
Reception
Adjustment
Frequency
Modulation Point
98MHz
VR801
10uV/m (20dBu) (P5)
MONO 1kHz/
Dev. 75kHz AUTO
Only confirm
SCAN
Reception
Adjustment
Frequency
Modulation Point
FM STEREO
Output level
98MHz
distortion adjustment. VR803
(P5)
Input only L channel
FM STEREO Output level
98MHz
distortion adjustment.
VR803
(P5)
Input only R channel
Adjustment
Value
0mV 0.5mV
(R831)
Distortion
level
Minimum at
TAPE-OUT
Adjustment
Value
"TUNED"
indicate on VFD
"TUNED"
indicate on VFD
Adjustment
Value
Minimum
at TAPE-OUT
channel R
Minimum
at TAPE-OUT
channel L