Sony CAS-1, Service Manual

Page: 27 / 98

CAS-1
27
HISTORY MODE
It can check the history information at the last time of protect error
that occurred.
(Refer to “LED position” on page 24 about position of LED)
Procedure:
1. Enter the servicing mode.
(Refer to “1. Setting method of servicing mode” on page 24)
2. Press the buttons on the remote commander that correspond to
each history modes in order, and transmit the test code to the
main unit (Refer to the following table).
Note 1: Press the each button in 150 ms or more interval, and perform the
all button operations in 7 seconds or less.
Mode Buttons of remote commander
Error type check
[AMP]
→
[DISPLAY]
→
[1]
→
[3]
→
[0/10]
→
[1]
→
[ ]
Function check
(Source at the time of
error that occurred)
[AMP]
→
[DISPLAY]
→
[1]
→
[3]
→
[0/10]
→
[2]
→
[ ]
Volume check
(Step at the time of error
that occurred)
[AMP]
→
[DISPLAY]
→
[1]
→
[3]
→
[0/10]
→
[3]
→
[ ]
3. When entering the error type check mode, a status indicator
LED fl ashes, and it indicate the type at the last time of protect
error that occurred.
Note 2: If there is no history information of protect error, a status indica-
tor LED does not fl ash.
Status indicator
LED
Error type
1 Ampli fi er error
2
Temperature sensor temperature
abnormality for NAND memory
4
Temperature sensor temperature
abnormality for combination power
5
Temperature sensor temperature
upper limit (Transistor destruction
prevention threshold) excess for
combination power
4. When entering the function check mode, a status indicator
LED lights up, and it indicate the function at the last time of
protect error that occurred.
Note 3: If there is no history information of protect error, a status indica-
tor LED does not fl ash.
Status indicator
LED
Function
1 USB-A
2 BLUETOOTH
3 USB-B
5. When entering the volume check mode, status indicator LEDs
light up (light off), and it indicate the volume at the last time of
protect error that occurred.
Refer to the right table about numeral of volume that indicated
by lighting-up and lighting-off of status indicator LEDs.
Note 4: If there is no history information of protect error, a status indica-
tor LED does not fl ash.
Status indicator LED Numeral
of volume 1 2 3 4 5 6 7
● ● ● ● ● ● ●
0
○ ● ● ● ● ● ●
1
● ○ ● ● ● ● ●
2
○ ○ ● ● ● ● ●
3
● ● ○ ● ● ● ●
4
○ ● ○ ● ● ● ●
5
● ○ ○ ● ● ● ●
6
○ ○ ○ ● ● ● ●
7
● ● ● ○ ● ● ●
8
○ ● ● ○ ● ● ●
9
● ○ ● ○ ● ● ●
10
○ ○ ● ○ ● ● ●
11
● ● ○ ○ ● ● ●
12
○ ● ○ ○ ● ● ●
13
● ○ ○ ○ ● ● ●
14
○ ○ ○ ○ ● ● ●
15
● ● ● ● ○ ● ●
16
○ ● ● ● ○ ● ●
17
● ○ ● ● ○ ● ●
18
○ ○ ● ● ○ ● ●
19
● ● ○ ● ○ ● ●
20
○ ● ○ ● ○ ● ●
21
● ○ ○ ● ○ ● ●
22
○ ○ ○ ● ○ ● ●
23
● ● ● ○ ○ ● ●
24
○ ● ● ○ ○ ● ●
25
● ○ ● ○ ○ ● ●
26
○ ○ ● ○ ○ ● ●
27
● ● ○ ○ ○ ● ●
28
○ ● ○ ○ ○ ● ●
29
● ○ ○ ○ ○ ● ●
30
○ ○ ○ ○ ○ ● ●
31
● ● ● ● ● ○ ●
32
○ ● ● ● ● ○ ●
33
● ○ ● ● ● ○ ●
34
○ ○ ● ● ● ○ ●
35
● ● ○ ● ● ○ ●
36
○ ● ○ ● ● ○ ●
37
● ○ ○ ● ● ○ ●
38
○ ○ ○ ● ● ○ ●
39
● ● ● ○ ● ○ ●
40
○ ● ● ○ ● ○ ●
41
● ○ ● ○ ● ○ ●
42
○ ○ ● ○ ● ○ ●
43
● ● ○ ○ ● ○ ●
44
○ ● ○ ○ ● ○ ●
45
● ○ ○ ○ ● ○ ●
46
○ ○ ○ ○ ● ○ ●
47
● ● ● ● ○ ○ ●
48
○ ● ● ● ○ ○ ●
49
● ○ ● ● ○ ○ ●
50
○ ○ ● ● ○ ○ ●
51
● ● ○ ● ○ ○ ●
52
○ ● ○ ● ○ ○ ●
53
● ○ ○ ● ○ ○ ●
54
○ ○ ○ ● ○ ○ ●
55
● ● ● ○ ○ ○ ●
56
○ ● ● ○ ○ ○ ●
57
● ○ ● ○ ○ ○ ●
58
○ ○ ● ○ ○ ○ ●
59
● ● ○ ○ ○ ○ ●
60
○ ● ○ ○ ○ ○ ●
61
○
: lighting-up,
●
: lighting-off
6. When releasing from the history mode, press the [AMP]
→
[DISPLAY]
→
[1]
→
[3]
→
[0/10]
→
[0/10]
→
[ ] buttons
on the remote commander in order, and transmit the test code
to the main unit.
Note 5: Press the each button in 150 ms or more interval, and perform the
all button operations in 7 seconds or less.