HCD-GTX999
HCD-GTX999
15
15
HDD FACTORY SHIPMENT TEST MODE
The user use areas in HDD are initialized, and the cold reset is
executed.
Note:
When this mode is executed, all the MUSIC data including the
DEMO tune in HDD is deleted (The SYSTEM
fi
le is not deleted).
Execute this mode after it notes it enough when executing it because
all the MUSIC data and CDDB updates that the user recorded are
deleted.
Procedure:
1. In the standby status, press the [
?/1
] button to turn the power
on.
2. Press three buttons of [
x
], [GROOVE] and [HDD REC] si-
multaneously.
3. Press the [
M
]/[
m
] buttons to select the “OK?”, and press the
[ENTER] button.
4. All
folder/
fi
le in the following folders in HDD is deleted.
• ROOT\SYSTEM\CCUDB
• ROOT\MUSIC
5. After initialization ends, the cold reset is executed.
SECTION 5
ELECTRICAL CHECKS
Note:
1. CD Block is basically designed to operate without adjustment. There-
fore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 M
Ω
impedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than speci
fi
ed value with the following checks.
RF LEVEL CHECK
TP216 (RFACO)
CD board
oscilloscope
TP5 (VC)
Procedure:
1. Connect an oscilloscope TP216 (RFACO) and TP5 (VC) on
the CD board.
2. Turn the power ON.
3. Load a disc (YEDS-18) and playback.
4. Con
fi
rm that oscilloscope waveform is clear and check if RF
signal level is correct or not.
Note:
Clear RF signal waveform means that the shape “
◊
” can be clearly
distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV : 200 mV
TIME/DIV : 500 ns
level : 1.1 ± 0.3 Vp-p
E-F BALANCE (1 TRACK JUMP) CHECK
TP3 (TEI)
TP5 (VC)
CD board
oscilloscope
Procedure:
1. Connect an oscilloscope to TP3 (TEI) and TP5 (VC).
2. Turn the power ON.
3. Load a disc (YEDS-18) and playback the number 5 track.
4. Con
fi
rm that the level B and A (DC voltage) on the oscillo-
scope waveform.
level = 1.3 ± 0.6 Vp-p symmetry
A (DC voltage)
center of
waveform
B
DVC
1 track jump waveform
CD SECTION
Connecting and Adjustment Location:
CD board
TP3
(TEI)
TP5
(VC)
TP216
(RFACO)
– CD BOARD (CONDUCTOR SIDE) –
TUNER SECTION
FM TUNE LEVEL CHECK
signal
generator
set
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM antenna
input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
: 75 kHz
Modulation
: 1 kHz
ANT input
: 35 dBu (EMF)
Note:
Use 75 ohm coaxial cable to connect signal generator and the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Con
fi
rm “TUNED” is lit on the display for A, B and C sig-
nals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299