Sony ICD-SX750 / ICD-SX750D / ICD-SX850 / ICD-SX850D / ICD-SX950 Service Manual ▷ View online
ICD-SX750/SX750D/SX850/SX850D/SX950
9
1-9. MICROPHONE CAP, MICROPHONE HOLDER
1-10. MIC101, MIC102, MIC103
6 microphone cap
8 microphone holder
3 microphone cap
1
2
7
5
4
mark
Take note of the orientation and the
direction when assembling. And take
note of the mark’s direction.
direction when assembling. And take
note of the mark’s direction.
Concave part
Concave part
Convex part
Convex part
3 MIC101
4 MIC102
5 MIC103
1 two blind sheets (microphone)
2 claw
microphone holder
ICD-SX750/SX750D/SX850/SX850D/SX950
10
SECTION 2
TEST MODE
[Test Mode]
The following checks can be implemented using the Test Mode.
The following checks can be implemented using the Test Mode.
How to Enter the Test Mode
• Turn the power on. (by inserting batteries)
• Turn ON the [NOISE CUT] switch while pressing the [DI-
• Turn the power on. (by inserting batteries)
• Turn ON the [NOISE CUT] switch while pressing the [DI-
VIDE/ ] button and [VOL –] button at the same time.
How to Exit the Test Mode
Exit the test mode by turning OFF the power. (by removing the
batteries)
Exit the test mode by turning OFF the power. (by removing the
batteries)
Initial Status of the Test Mode
When the machine enters the test mode, the LCD display appears
as shown below.
When the machine enters the test mode, the LCD display appears
as shown below.
+
Loop
Select the desired item by using the [
>
]/[
.
] button, and press
the [
Nx
] button to set the selection.
>
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>
>
>
>
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>
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>
>
>
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Version
KeyChk+Fmt
Loop
ExtMic Cal
SetMic Cal
Beep
Lcd Contrast
Cluster Num
>
.
>
.
Battery
Factory Ship
BattAB4
BattCnt
Menu Init
Key Check
Log Output
App LogOut
Convert
VBUS
Sleep
START
Initial status of test mode
F/W version display
TEST MODE
END
TEST MODE
Turn off the power
(Remove the batteries)
(Remove the batteries)
RTC lnt
BattAC2
>
.
>
.
1. Version test
• Version of the respective modules are verifi ed.
ARM X.XX .XX
/
DSP X.X.XX
ICX-XXX
F/W version of
CPU(DSP block)
CPU(DSP block)
Boot:X
Oct XX 200X XX:XX:XX
F/W version of
CPU(ARM block)
CPU(ARM block)
F/W version of
Boot loader
Boot loader
• Press the [
x
] button to return to the test mode screen.
2. Key Chk + Format test
• Perform the key check by pressing the keys. The NAND
formatting (deleting all events) and the default settings of
the menus (default language and LCD contrast remain un-
changed) are executed at the same time.
the menus (default language and LCD contrast remain un-
changed) are executed at the same time.
FormatStart
The checked key is display.
When all checks are
completed, the back-Light
turns on for 0.5 seconds
completed, the back-Light
turns on for 0.5 seconds
The NAND formatting
(deleting all events)
and the befault settings
of the menus are completed.
(deleting all events)
and the befault settings
of the menus are completed.
Total of 15 keys* are counted.
* [
Nx
]/[
>
]/[
.
]/[ /MENU]/[
z
]/[
x
]/[VOL +]/
[VOL –]/[ERASE]/[DIVIDE/ ]/[ A-B/ ]/
[DPC (ON/OFF)]/[NOISE CUT (ON/OFF)]/
[DIRECTNL
[DPC (ON/OFF)]/[NOISE CUT (ON/OFF)]/
[DIRECTNL
(ON/OFF)]/[. HOLD]
• Once formatting is normally completed, reboot the system.
ICD-SX750/SX750D/SX850/SX850D/SX950
11
3. Loop test
Execute the DSP LOOP BACK.
Execute the DSP LOOP BACK.
1
6
3
4
2
5
• Press the [ /MENU] button to return to the test mode
screen.
4. ExtMic Cal
• The external microphone R and L channels level difference
is calibrated.
• Press the [
Nx
] button to start calibration.
• Press the [
x
] button to return to the test mode screen.
5. SetMic Cal
• The internal microphone R and L channels level difference
is calibrated.
• Press the [
Nx
] button to start calibration.
• Press the [
x
] button to return to the test mode screen.
6. Beep test
• Beep sound of 1.3 kHz is output.
• Press the [
• Press the [
Nx
] button to start outputting and press the [
x
]
button to stop.
• Press the [ /MENU] button to return to the test mode
screen.
7. LCD Contrast test
• Adjust the LCD contrast.
Default value is 10.
• Adjust the LCD contrast using the [
Default value is 10.
• Adjust the LCD contrast using the [
>
]/[
.
] button.
• Press the [ /MENU] button to return to the test mode
screen.
8. Cluster Num test
• This is the cluster number display to be used for engineering
design.
• Press the [
x
] button to return the test mode screen.
9. RTC Interrupt test
• Perform the self test of the RTC.
• Press the [
• Press the [
x
] button to return to the test mode screen.
10. Battery test
• The detected A/D value of the battery remaining power is
checked.
• Press the [
x
] or [ /MENU] button to return to the test
mode screen.
11. Batt Cnt test
• The present A/D value of the center of the battery remaining
is checked.
• When the battery is not connected, NG is display.
• Press the [
• Press the [
x
] or [ /MENU] button to return to the test
mode screen.
12. Batt AC2 test
• The present A/D value of the side of VBatAC x2 on the error
amplifi ed circuit (IC1603 output) is checked.
• Press the [
x
] or [ /MENU] button to return to the test
mode screen.
13. Batt AB4 test
• The present A/D value of the side of VBatAB x4 on the error
amplifi ed circuit (IC1603 output) is checked.
• Press the [
x
] or [ /MENU] button to return to the test
mode screen.
* : 12, 13 items, refer to following fi g.
70k
110k
ADIN1
(VCCVBAT)
ErrorAmp
ADIN7
(VBAT_ERR)
ADIN8
(VBAT_CNT)
B
C
A
VBatAB
VBatBC
VBatAC
IC1001
IC1603
Q1664
Q1663
x2SIDE
x4SIDE
14. VBUS test
• The present value of the VBUS is checked.
If it is connected, OK is display.
• Press the [
If it is connected, OK is display.
• Press the [
x
] or [ /MENU] button to return to the test
mode screen.
15. Sleep test
• Sleep is tested.
Note: When <Sleep> is selected, the machine enter the sleep mode.
To exit the sleep mode, turn off the power, by removing the bat-
teries and reenter the test mode.
teries and reenter the test mode.
16. App Log Out test
• This is the app log out to be used for engineering design.
• Press the [
• Press the [
x
] button to return the test mode screen.
17. Log Output test
• This is the log output to be used for engineering design.
Note: Not used.
• Press the [
x
] button to return to the test mode screen.
Test
Key SWITCH
Description
1
Sound vol-
ume test
ume test
[VOL +],
[VOL –]
[VOL –]
The sound volume can be adjusted
(Default value is 20.)
(Default value is 20.)
2
Recording
level test
level test
[.], [>]
Press the [.HOLD] switch to ON
for MANUAL mode.
The recording level can be adjusted
(Default value is 30.)
The recording level can be adjusted
(Default value is 30.)
3
Muting test [DIVIDE/ ]
Muting test can be set to “ON” or
“OFF”.
“OFF”.
Directivity [DIRECTNL]
“ON” or “OFF” of the switch can be
set the directivity of the microphone.
set the directivity of the microphone.
4
Setting of
recording
AUTO/
MANUAL
recording
AUTO/
MANUAL
[.HOLD]
OFF: AUTO
ON: MANUAL
ON: MANUAL
5
Sensitivity/
Limitter
Limitter
[NOISE
CUT]
CUT]
AUTO ([.HOLD] SW:OFF):
(OFF: Sensitivity H, ON: Sensitiv-
ity L)
ity L)
MANUAL ([.HOLD] SW:ON):
(OFF: Limitter OFF, ON: Limitter
ON)
ON)
6
Selection
of the
external
micro-
phone
of the
external
micro-
phone
[DPC]
Press the [.HOLD] switch to ON
for MANUAL mode.
OFF: MIC IN, ON: AUDIO IN
OFF: MIC IN, ON: AUDIO IN
ICD-SX750/SX750D/SX850/SX850D/SX950
12
18. Menu lnit
• Press the [
Nx
] button to enter the menu initialization.
• Press the [
x
] button to return to the test mode screen.
19. Convert test
• This is the conversion out to be used for engineering de-
sign.
• Press the [
x
] or the [ /MENU] button to exit the test
mode.
20. Factory Ship test
• Press the [
Nx
] button to enter the factory initialization.
• Press the [
x
] button to return to the test mode screen.
21. Key Check test
• Key check only is executed when the key is pressed.
• Press the [
• Press the [
x
] button to return to the test mode screen.
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