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Tuner Adjustment; System Connections - Kenwood MDX-G2-L Service Manual

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Tuner adjustment

I T E M
N o .
FM SECTION :
SELECTOR : FM
1
TUNING LEVEL
1kHz, ±75kHz dev.
35.2dBf (ANT. input)

SYSTEM CONNECTIONS

Dummy antenna
CD player check
INPUT
No.
ITEM
SETTING
For this adjustment, enter the test mode.
TEST MODE : While pressing the [CD PLAY/PAUSE] key, turn power on.
LASER
1
POWER
Test disc
LASER
2
Type 4
CURRENT
Note:
Type 4disc :SONY YEDS-18 Test Disc or equivalent. (KTD-02)
LPF : Around 47kΩ + 390pF or so.
(a) Laser Power
Pickup
ADJUSTMENTS
I N P U T
OUTPUT
S E T T I N G S
S E T T I N G S
(A)
98.0MHz MONO
X09(C/6, CN34)
FM-MPX-SG
FM-MPX-SG
POLAR SG
(A)
OUTPUT
SETTING
Set the sensor sec-
*OPEN/CLOSE SW.
tion of the optical
Press the "PLAY" key
power meter on the
to check that the dis-
pickup lens.
*CN26(1,2), X09
Connect the DC
Press the "PLAY" key
voltmeter to
to check that the dis-
CN25(#1 and #2) in
play is "03" or "05"
X09(B/6)
0.05~0.15 mW
Optical power meter
MDX-G2-H/-L
RECEIVER
S E T T I N G S
MONO
98.0MHz
PLAYER
ALIGNMENT
SETTING
POINT
Short circuit
play is "03".
ALIGNMENT
ALIGN FOR F I G .
P O I N T S
Adjust VR1
and stop at the
X09 C/6
point where
VR31
ED1(TUNED)
goes on.
ALIGN FOR
On the power from 0.05 to
0.15mW. when the diffrac-
tion grating is correctly
aligned with the RF level
of 0.8Vp-p or more
220mV to 550mV
FIG.
(a)
3

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