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HCD-EX6/EX6T/EX8/EX8T/EX9/EX9T
13
SECTION 3
TEST MODE
COLD RESET
The cold reset clears all data including preset data stored in the
memory to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. In the standby status, press the [
The cold reset clears all data including preset data stored in the
memory to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. In the standby status, press the [
?/1
] button to turn the power
on.
2. Press three buttons of [
x
], [FUNCTION] and [
?/1
] simultane-
ously.
3. When “RESET” appears, the set enters standby status.
PANEL TEST MODE
Enter The Panel Test Mode
Procedure:
1. In the standby status, press the [
Enter The Panel Test Mode
Procedure:
1. In the standby status, press the [
?/1
] button to turn the power
on.
2. Press three buttons of [DISPLAY], [
x
] and [OPTIONS] simul-
taneously.
3. When the panel test mode is activated, all LEDs and segments
of the liquid crystal display panel are all turned on.
Version Check
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
crystal display panel are turned on), press the [FUNCTION]
button.
button.
2. On the liquid crystal display panel, date and version are dis-
played “xxxxVxxx”.
3. From this status, press the [
u
] button, and the destination and
model name are displayed.
4. To release from this mode, press three buttons of [DISPLAY],
[
x
] and [OPTIONS] simultaneously.
Key Test Mode
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
crystal display panel are turned on), press the [
x
] button.
2. The message “KEY0 0 0” displayed. Whenever any buttons
are pressed and the [VOLUME] control is turned, the value is
changed.
changed.
3. To release from this mode, press three buttons of [DISPLAY],
[
x
] and [OPTIONS] simultaneously.
CD REPEAT 5 LIMIT CANCEL MODE
Number of repeats for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode enables CD to repeat playback for
limitless times.
Procedure:
1. Press the [
Number of repeats for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode enables CD to repeat playback for
limitless times.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [DISPLAY], [
3. Press three buttons of [DISPLAY], [
x
] and [TUNING +
M
L
] simultaneously.
4. It enters the CD repeat 5 limit cancel mode and displays “NO
LIMIT”.
5. To release this mode, press the [
?/1
] button to turn the power
off.
CD TRAY LOCK
This mode is for the antitheft of CD disc in shop. (not for transport)
Procedure:
1. Press the [
This mode is for the antitheft of CD disc in shop. (not for transport)
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Insert a disc.
4. While pressing the [
3. Insert a disc.
4. While pressing the [
x
] button, press the [
Z
] button for more 5
seconds.
5. The message “LOCKED” is displayed and the disc tray is
locked. (Even if releasing from this mode, the disc tray is still
locked)
locked)
6. If press the [
Z
] button to eject the disc, the message “LOCKED”
is displayed and can not eject the disc.
7. To release this lock, while pressing the [
x
] button, press the
[
Z
] button for 5 seconds again.
8. The message “UNLOCKED” is displayed and the disc tray is
unlocked.
CD POWER MANAGE
This mode is for switch the CD power supply on/off. Even if this
state pulls out AC plug, it is held.
Procedure:
1. Press the [
This mode is for switch the CD power supply on/off. Even if this
state pulls out AC plug, it is held.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press the [
3. Press the [
?/1
] button again to turn the power off (standby).
4. After pressing the [DISPLAY] button, while pressing the [
x
]
button, press the [
?/1
] button.
5. It turns power on and display “CD/USB”, then display “PWR
ON” or “PWR OFF”.
CHANGE-OVER THE AM TUNING INTERVAL
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select TUNER AM function.
3. Press the [
3. Press the [
?/1
] button again to turn the power off (standby).
4. After pressing the [DISPLAY] button, while pressing the
[TUNING +
M
L
] button, press the [
?/1
] button.
5. It turns power on and display “9k STEP” or “10k STEP”, and
thus the tuning interval is changed over.
CD SHIP MODE
This mode can run the CD sled motor optionally. Use this mode,
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the [
This mode can run the CD sled motor optionally. Use this mode,
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Confi rm there is no disc in all trays.
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [
u
] and [
?/1
] simultaneously.
5. Set to the CD ship mode (chucking on).
6. After blink “STANDBY”, “LOCK” is displayed, disconnect
6. After blink “STANDBY”, “LOCK” is displayed, disconnect
the AC plug.
CD SHIP AND COLD RESET
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Confi rm there is no disc in all trays.
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [CD], [– TUNING
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [CD], [– TUNING
l
m
] and [
?/1
]
simultaneously.
5. After blink “STANDBY”, “RESET” is displayed, disconnect
the AC plug.
HCD-EX6/EX6T/EX8/EX8T/EX9/EX9T
14
CD SERVO TEST MODE
This mode can check the servo system operations of the optical
pick-up system (= optical unit + BD74 board).
This mode can check the servo system operations of the optical
pick-up system (= optical unit + BD74 board).
Note 1: Do not enter the this mode while any other test mode is in prog-
ress.
Note 2: Do not enter any other test mode while the this mode is in prog-
ress.
How to Enter the CD Servo Test Mode
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [
3. Press three buttons of [
u
], [TUNING +
M
L
] and [
?/1
]
simultaneously.
4. It enters the CD servo test mode and displays “xx xxxx”.
How to Exit from the CD Servo Test Mode
Procedure:
1. Press three buttons of [
Procedure:
1. Press three buttons of [
u
], [TUNING +
M
L
] and [
?/1
]
simultaneously.
2. It releases from the CD Servo Test Mode and returns to the
ordinary CD function.
Key Operation:
[TUNING +
[TUNING +
M
L
], [– TUNING
l
m
]:
Use these keys to move the cursor to the right digit
or to the left digit in the six-digit number, when
changing the numeric value.
or to the left digit in the six-digit number, when
changing the numeric value.
Press [TUNING +
M
L
] to move the cursor to
the right, and press [– TUNING
l
m
] to return
the cursor to the left.
CD SERVICE MODE
This mode can move the SLED of the optical pick-up, and also can
turn the optical pick-up laser power on and off.
Procedure:
1. Press the [
This mode can move the SLED of the optical pick-up, and also can
turn the optical pick-up laser power on and off.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press three buttons of [
u
], [ENTER] and [
?/1
] simultane-
ously.
3. Press the [FUNCTION] button to select CD function.
4. It enters the CD service mode and displays “SERVICE”.
5. To release from this mode, press three buttons of [
4. It enters the CD service mode and displays “SERVICE”.
5. To release from this mode, press three buttons of [
u
], [EN-
TER] and [
?/1
] simultaneously.
Key Operation:
[TUNING +
[TUNING +
M
L
], [– TUNING
l
m
]:
Use these keys to move the SLED. When [TUN-
ING +
ING +
M
L
] is pressed in this mode, the SLED
moves to outer circumference and the message
“SLED OUT” is displayed.
“SLED OUT” is displayed.
When
[–
TUNING
l
m
] is pressed in this
mode, the SLED moves to inner circumference and
the message “SLED IN” is displayed.
the message “SLED IN” is displayed.
[CD]:
Use this key to turn the optical pick-up laser power
on and off. When the laser power is turned on, the
message “LD ON” is displayed. When the laser
power is turned off, the message “LD OFF” is dis-
played.
on and off. When the laser power is turned on, the
message “LD ON” is displayed. When the laser
power is turned off, the message “LD OFF” is dis-
played.
CD FACTORY MODE
Note 1: Do not enter the this mode while any other testmode is in prog-
ress.
Note 2: Do not enter any other test mode while the this mode is in prog-
ress.
Procedure:
1. Press the [
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function
3. Press three buttons of [
3. Press three buttons of [
u
], [USB] and [
?/1
] simultaneously.
4. It enters the CD factory mode and the message “FACTORY”
is displayed. When the [CD] button is pressed four times, the
following message (initial display) is displayed.
following message (initial display) is displayed.
– – ON S
S character mode setting
Tracking servo setting
RF gain setting
Tracking servo setting
RF gain setting
Key Operation:
[CD]:
[CD]:
The display changes in the following order when-
ever the button is pressed.
ever the button is pressed.
(Initial display)
FSCAG ** (**: Focus AGC value)
TRKAG ** (**: Track AGC value)
RF_AG ** (**: RF AGC value)
[DSGX]:
RF gain setting changes whenever the button is
pressed.
pressed.
“-- --”: No gain fi xation.
“AL”: Fix to the gain for AL disc.
“RW”: Fix to the gain for RW disc.
[USB]:
Tracking servo setting changes whenever the but-
ton is pressed.
ton is pressed.
“ON”: Tracking servo ON.
“OFF”: Tracking servo OFF.
[FUNCTION]:
S character mode setting changes whenever the but-
ton is pressed.
ton is pressed.
“ ”: S character mode OFF.
“S”: S character mode ON.
5. To release from this mode, press three buttons of [
u
], [USB]
and [
?/1
] simultaneously.
HCD-EX6/EX6T/EX8/EX8T/EX9/EX9T
15
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
HCD-EX6T/EX8T/EX9T only:
1. Demagnetize the record/playback head with a head demagne-
1. Demagnetize the record/playback head with a head demagne-
tizer.
2. Do not use a magnetized screwdriver for the adjustments.
TEST TAPE
Tape
Signal
Used for
P-4-A063
6.3 kHz, –10 dB
Azimuth Adjustment
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Adjustment Location: Record/Playback Head (See page 16)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode: Playback
1. Mode: Playback
set
USB-JACK board
PHONES jack
(J551)
PHONES jack
(J551)
+
–
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
P-4-A063
(6.3 kHz, –10 dB)
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1 dB of peak.
so that outputs match within 1 dB of peak.
Screw
position
L-CH
peak
within
1 dB
Output
level
L-CH
peak
R-CH
peak
within
1 dB
Screw
position
R-CH
peak
3. Mode: Playback
set
oscilloscope
V
H
waveform of oscilloscope
in phase 45º
90º
135º 180º
good
wrong
USB-JACK board
PHONES jack
(J551)
PHONES jack
(J551)
test tape
P-4-A063
(6.3 kHz, –10 dB)
P-4-A063
(6.3 kHz, –10 dB)
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
HCD-EX6T/EX8T/EX9T only:
Precaution
1. Clean the following parts with a denatured-alcohol-moistened
Precaution
1. Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback
head pinch
roller
erase
head
rubber
belts
capstan
idlers
2. Demagnetize the record/playback head with a head demag-
netizer. (Do not bring the head magnetizer close to the erase
head.)
head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
Mode
Torque meter
Meter reading
FWD
CQ-102AS
2.0 – 8.0 mN • m
(20 to 80 g • cm)
(0.28 – 1.12 oz • inch)
FWD
Back tension
Back tension
CQ-102C
0.15 – 0.6 mN • m
(1.5 to 6 g • cm)
(0.021 – 0.083 oz • inch)
FF
CQ-201AS
5 – 17.7 mN • m
(50 to 177 g • cm)
(0.7 – 2.48 oz • inch)
REV
CQ-201B
5 – 17.7 mN • m
(50 to 177 g • cm)
(0.7 – 2.48 oz • inch)
Tape Tension Measurement
Mode
Tension meter
Meter reading
FWD
CQ-403A
more than 80 g
(more than 2.82 oz)
DECK SECTION
0 dB = 0.775V
HCD-EX6/EX6T/EX8/EX8T/EX9/EX9T
16
Adjustment Location: Record/Playback Head
Note:
1. CD Block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (Part No. 3-702-101-01) unless otherwise indicat-
1. CD Block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (Part No. 3-702-101-01) unless otherwise indicat-
ed.
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 specifi ed value with the following checks.
5. Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
+
–
BD74 board
oscilloscope
(DC range)
CL102 (RFOUT)
CL117 (VREF)
Procedure:
1. Connect the oscilloscope to CL102 (RFOUT) and CL117
1. Connect the oscilloscope to CL102 (RFOUT) and CL117
(VREF) on the BD74 board.
2. Press the [
?/1
] button to turn the power on, and press the
[FUNCTION] button to select CD function.
3. Set disc (YEDS-18) and press the [
u
] button to playback.
4. Confi rm that oscilloscope waveform is as shown in the fi gure
below (eye pattern).
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
center of the waveform can be clearly distinguished.
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level:
1.1 ± 0.4 Vp-p
Checking Location:
– BD74 Board (Side B) –
– BD74 Board (Side B) –
CL102
(RFOUT)
CL117
(VREF)
IC101
IC301
CD SECTION
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