XV-EV61
135
5
6
7
8
5
6
7
8
C
D
F
A
B
E
Protection Specifications and Service Mode
1. Specific conditions for Service Test mode
• VDET is neglected.
• XPROTECT is neglected.
•
Even if the unit is urgently shut down in failure in Normal mode, you can turn it on without waiting for one minute.
2. How to enter Service Test mode
• While connecting STEST port (IC5501 Pin69) to "+5V", connect AC power cord. (See next page.)
3. How to quit Service Test mode, and the conditions for quitting
• To quit Service Test mode, turn the power off or disconnect the AC power cord.
• When quitting Service Test mode, only data on protection in RAM are cleared.
4. Indications when Service Test mode starts
• Indications on the LCD display when Service Test mode starts differ depending on whether the unit was turned off normally or if the unit
was urgently shut down because the abnormality of the power, as described below.
Protection Specifications
The system microcomputer (CONTRL Assy IC5501) for this unit always monitors if abnormality of the power is generated, and as soon as
an abnormality is detected shuts off the power. The specifications of the microcomputer terminal for monitoring are as follows:
In abnormal conditions or in failure, the TIMER LED flashes after the power is shut off. If the power was shut off because of an
abnormality, it can be turned on by pressing the STANDBY/ON key. However, if the power was shut off because of failure,
for one
minute after a shutdown the STANDBY/ON key is disabled in order to protect against possible ignition of fumes.
If the AC power
cord is pulled out during this one minute of standby, when the AC power cord is reconnected, the STANDBY/ON key will still be disabled
until the remaining seconds have elapsed.
This unit has Service Test mode for analyzing the above power abnormality. Its specifications are as follows:
∗
Vdd = Approx. 5 V (depending on the unit)
5. Operations during Service Test mode
• Basically, operations in Service Test mode are the same as in Normal mode.
[After the power is shut down because of
an failure/abnormality in the AMP system]
P R T C T
W N G
FL display
V o l u m e
0
FL display
P O W
E R R
FL display
D V D
P R T E C T
FL display
V o l u m e
0
FL display
D V D
E R R
FL display
[After the power is shut down because of a failure
in the DVD system]
Name of microcomputer terminal
XPROTECT (Pin 22)
VDET (Pin 17)
Monitoring item
Abnormality of AMP-system power
Short-circuiting of the SP terminal, etc.
Abnormality of power inside the DVDM
Assy
Voltage at terminal
In normal conditions
0.71
×
Vdd
∗
or more
0.5 xVdd-0.85 xVdd
∗
In abnormal conditions
0.36
×
Vdd–0.71
×
Vdd
∗
In failure
0.36
×
Vdd
∗
or less
0.85 Vdd
∗
or more
0.5 xVdd
∗
or less
Monitoring start time
1.5 sec after power is turned on
1.5 sec after power is turned on
Time required for determining abnormality
0.5 sec after detection
0.5 sec after detection
Содержание XV-EV31
Страница 34: ...XV EV61 34 1 2 3 4 1 2 3 4 C D F A B E 3 7 DVDM ASSY 3 3 B 3 3 B 2 3 ...
Страница 50: ...XV EV61 50 1 2 3 4 1 2 3 4 C D F A B E 3 15 MIC ASSY J H P ASSY XWZ3731 O O K CN3008 JA5401 JA5402 ...
Страница 55: ...XV EV61 55 5 6 7 8 5 6 7 8 C D F A B E AUDIO SIGNAL ROUTE FL M The power supply is shown with the marked box ...
Страница 58: ...XV EV61 58 1 2 3 4 1 2 3 4 C D F A B E 3 19 PRIMARY ASSY P J3009 K 1SS133 1SS133 ...