Test Mode; Tel 13942296513 - Sony HCD-GPX9 Service Manual

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[MC 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
on.
2. Press three buttons of
simultaneously.
3. The set is reset, and become standby status.
[COMMON TEST MODE]
Enter The Common Test Mode
Procedure:
1. In the standby status, press the
on.
2. Press three buttons of [REPEAT],
simultaneously.
3. When the common test mode is activated, "SLEEP" and
"PLAY" icons are blink on the fluorescent indicator tube.
AMP Test
Procedure:
1. In the common test mode, if turn the [VOLUME] knob
clockwise, it displays "VOL MAX", and if turn the knob
counterclockwise, it displays "VOL MIN".
2. If the [TREBLE] knobs are turned clockwise or
counterclockwise, it displays "TONE FLAT".
3. If the [BASS] knobs are turned clockwise, it displays "TONE
MAX", and if turn the knob counterclockwise, it displays
"TONE MIN".
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L 13942296513
4. To release from this mode, disconnect the AC plug to turn the
power off.
Tape Test
Procedure:
1. In the common test mode, insert a tape.
2. Input any audio signal from the [VIDEO/MD] jack (J301) on
the MAIN board.
3. Press the [ REC] button, and press the [
z
select the tape direction.
4. Press the [ REC] button again to start recording.
z
5. If press the
m
returned to recording start point by cue or review operation,
and starts playback.
6. To release from this mode, disconnect the AC plug to turn the
power off.
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button to turn the power
I/1
(CD), and [DSGX]
,
I/1 x
button to turn the power
I/1
(TAPE), and [DSGX]
x
TAPE] button to
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(TAPE) or (TAPE) button, the tape is
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SECTION 4

TEST MODE

2 9
8
[PANEL TEST MODE]
Enter The Panel Test Mode
Procedure:
1. In the standby status, press the
on.
2. Press three buttons of [PLAY MODE],
simultaneously.
3. When the panel test mode is activated, LEDs and segments of
fluorescent indicator tube are all turned on.
Version Check
Procedure:
1. In the panel test mode (all LEDs and segments of fluorescent
indicator tube are turned on), press the [TUNING MODE] button.
2. Destination indication and model type indication are displayed
on the fluorescent indicator tube alternately.
3. From this status, each time the [TUNING MODE] button is
pressed, it changes the version display of each module
cyclically as follows.
Display
MC
GC
CD
CDD
CDMA
CDMB
BDA
BDB
ST
Q Q
3 6 7 1 3 1 5
TA
TM
TC
4. To date of any module, press the [DSGX] button.
5. To release from this mode, press three buttons of [PLAY MODE],
(TAPE), and [DSGX] simultaneously.
x
Key Check
Procedure:
1. In the panel test mode (all LEDs and segments of fluorescent
indicator tube are turned on), press the [PLAY MODE] button.
2. It displays "K 0 J0 V0" on the fluorescent indicator tube.
3. Each time a button is pressed, "K" value increases. However,
once a button is pressed, it is no longer taken into account.
All keys are pressed, display becomes "K26".
4. "V" value increases like 0, 2, 4... or 1, 3, 5... if turn the
[VOLUME] knob clockwise, or it decreases like 0, 8, 6... or 1,
9, 7... if turn the knob counterclockwise.
"J" value increases like 1, 2, 3... if turn the [BASS] or [TREBLE]
knob clockwise, or it decreases like 0, 9, 8 ... if turn the knob
counterclockwise.
5. To release from this mode, press three buttons of [PLAY
MODE],
x
co
.
HCD-GPX9
9 4 2 8
button to turn the power
I/1
(TAPE), and [DSGX]
x
Module
Main controller
Display
CD system
CD device master
CDM upper module
CDM lower module
BD upper module
BD lower module
Tuner
0 5 8 2 9 9 4 2 8
Amplifier
Timer
Tape
(TAPE), and [DSGX] simultaneously.
m
9 9
9 9
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