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5. FM Muting Level Adjustment
Step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output
Level and Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
Signal generator output to
FM antenna terminal. (75 Ω)
98 MHz
6.3 µV (16 dB)
MONO 1kHz /
Dev. 75kHz 100%
98 MHz
(P2)
R219
"TUNED"
indicate on FLD
"TUNED"
indicate on FLD
2 Only Confirm
AUTO
SCAN
Over mentioned level
+3 dB
REMARK: This adjustment is related to the AM auto stop Adjustment. This adjustment is necessary after AM auto stop
adjustment.
6. FM STEREO Distortion Adjustment
Step
Input Signal Source
Connection
Signal
Frequency
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
Signal generator output to
FM antenna terminal. (75 Ω)
98 MHz
500 µV (54 dB)
L or R 1kHz /
Dev. 67.5kHz 90%
PILOT 19kHz /
Dev. 6.75kHz 9%
98 MHz
(P2)
IF COIL
in
FRONT END
Adjust the L channel with the RF signal modulated only L channel first and confirm the R channel with the RF signal
modulated only R channel.
Distortion level
Minimum
at TAPE-OUT
7. FM STEREO Separation Adjustment
Step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output
Level and Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
98 MHz
R218
2 R218
Output level
Similar as Rch
at TAPE-OUT
channel L
Signal generator output to
FM antenna terminal. (75 Ω)
98 MHz
same specification as
FM STEREO distortion
adjustment.
Input only L channel.
same specification as
FM STEREO distortion
adjustment.
Input only R channel.
98 MHz
(P2)
98 MHz
(P2)
Output level
Minimum
at TAPE-OUT
channel R
Turn variable resistor R219 and stop at position “TUNED” is not shown (not indicated), then again turn the
variable resistor R219 to the opposite revolution and stop at a position “TUNED” is shown.
Source Signal Output
Level and Modulation
no
yes
no
yes
no
yes
no
yes
No Power
Standby LED Lights
up on standby mode
FLD shows
ERROR PWR2
supply +5VD to
P604 ?
P604(DSP PCB) has
problem
CPU interface is wrong
On P804
+5VD is ok?
Connection has problem
P804 has problem
Not supplied Vkk or F
to PU04
P804 has problem or
PU04 has problem
to be check +5.6VL
no
yes
No sound
on Analog
STEREO mode
Volume, tone,or Crossover
has problem
Test tone is
OK ?
(Volume Tone, Crossover are OK)
Analog audio input sel.
(PS08,QS10,QS11,QS12)
has problem
10. TROUBLE SHOOTING