Service Test Mode - Pioneer XV-DV353 Service Manual

1

7.1.6 SERVICE TEST MODE

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1. Conditions During Service Test Mode
• During Service Test mode, the unit will not be shut down for an emergency even if one of the failures mentioned below
A
occurs.
• After the unit has been shut down in Normal mode for an emergency upon detection of one of the failures mentioned below,
you can turn it on immediately, without waiting for one minute, in Service Test mode.
• The accumulated power-on time can be checked during Service Test mode.
2. How to enter Service Test mode
• Connect AC power cord with the STEST port (microcomputer terminal IC5501: 43-pin) at High (5 V). (See "Service Test
mode connecting point".)
Note: Initial function setting is DVD/CD.
• Connect AC power cord while holding both the VOL– and POWER keys on the main unit pressed. The unit will be turned on,
and the following indication will be displayed:
B
3. How to quit Service Test mode, and conditions for quitting
• To quit Service Test mode, turn the power off or disconnect the AC power cord to turn the power off.
• When Service Test mode is quit, only data on protection in RAM will be initialized, and data on user settings in RAM will not
be initialized.
4. Indications on the FL display when Service Test mode is entered
• Indications on the FL display when Service Test mode is entered differ depending on whether the unit was turned off
normally or shut down for emergency protection, immediately before Service Test mode starts, as follows:
[After a normal power-off]
FL display
C
FL display
FL display
[After a shutdown caused TE
L 13942296513
by an AMP-system failure]
FL display P R T C T
FL display
V O L
FL display D V D
D
[After a shutdown caused
by high-temperature detection]
FL display O V E R
V O L
FL display
FL display D V D
5. Operations during Service Test Mode
• Basically, operations in Service Test mode are the same as in Normal mode. However, to indicate that the unit is in
Service Test mode, the following are displayed when the functions are changed:
E
[Functions]
DVD/CD D V D
USB U S B
TUNER T X
LINE1 L N 1
LINE2 L N 2
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1
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2
W e l c o m e
V O L 0
D V D S E R V
[After a shutdown caused
by a DVD-system failure]
E FL display
FL display
0
S E R V FL display
[After a shutdown 1 caused
by over current detection]
T E M P FL display
0
FL display
S E R V FL display
[FL display]
S E R V
S E R V
S E R V
S E R V
S E R V
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y
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2
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3
8
Q Q
3 6 7 1 3
D V D P R T C T
V O L 0
D V D S E R V
O C E R R 1
V O L 0
D V D S E R V
When the function is set to LINE2, the Surround setting is fixed
•
to 5-channel STEREO, which is only for Service Test mode. (In
Normal mode, it is fixed to 2-channel STEREO.) In such a case,
do not check the sound through the headphones, because
headphone operation with 5-channel STEREO is not
guaranteed. If you wish to check the sound through the
headphones, use a function other than LINE2.
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XV-DV353
3
4
2 9 9 4 2 8
[After a shutdown caused
1 5 0 5 8 2 9 9 4
by an EEPROM (IC5502) failure]
FL display E E P E R R
FL display V O L 0
FL display D V D S E R
[After a shutdown 2 caused
by over current detection]
FL display O C E R R
V O L 0
FL display
FL display D V D S E R
m
co
4
9 9
2 8 9 9
V
2
V