ICD-CX50 - Sony Audio Service Manual (repair manual). Page 9

9

This set provides the checks given below in TEST MODE.

Turn on power to the set. Turn on [V-UP] switch from the off state
while pressing  b  key and [Camera] button at the same time.

Press [RESET] switch.

The menu given below appears when TEST MODE is entered.

Select an item using  >  /  .  key and determine the selected
item using  u  key.

Check the version of each module.

ICX-165 build: Language

(JP: Japanese, US: English, and CN: Chinese)

ARM : F/W version for CPU (ARM unit)
SHE

: F/W version for SUB-CPU

DSP

: F/W version for CPU (DSP unit)

IPL

: F/W version for IPL

Date

: Build date and time

Check the input by pressing each key.

Input and INT check (KEY input acceptance check and
KEY_XWAKE interrupt check).
Target input keys:
[MACRO] / [CAM-DET] / [HOLD] / [DISPLAY/MENU] /  u /
  >  /  . /  b  /  B  /  x  / [VOL +] / [VOL --] / [V-UP] /
[CAMERA] / [CAPTURE] / [REC/PAUSE] / [LCD COVER]
Total of 17 key locations

The backlight is lit for 0.5 sec. when a key input is accepted.

Check the languages and change between them.
The default is Japanese.
Example of LCD display

Perform a DSP LOOP BACK.

Sound 1.3kHz beep.

Perform three types of self tests: NOR, NAND and PORT.
OK is displayed if normal operation is confirmed by the test.

Check the current value of Battery A/D.

Check the current value of DC-IN A/D.
NG is displayed if not connected.

Check the presence of VBUS.
OK is displayed if VBUS is present.

Perform a sleep test.
The LCD display disappears and then the sleep mode is entered.
To exit the sleep mode, press [RESET] switch.

MicSens
Lcd Contrast
Key Check
Initialize
Version
F/W Update

LCD display

.

>

Determine using   

u  

key.

     :
MicSens
Lcd Contrast
Key Check
Initialize
Version
F/W Update
Camera Init
Camera Adjust
Language
Loop Back
AGC
Beep
RTC Interrupt
System
Battery
DC-IN
VBUS
Sleep
Log Output
Log Clear
    :
    :

ICX-165 build JP
ARM 1.0.00
SHE 1.3
DSP 0.8.37
IPL

1.0.00

Mar 28 22:09:49

LCD display

<KEY CHECK>
KEY:- -

REMAIN:17

<KEY CHECK>
KEY:- -

OK

LCD display

Display the key of 
which input is accepted.

Total of 17 keys counted.

Once all checks have been completed,
OK is displayed and the green LED is lit.

<Language>
SET JP
[VOL +]:US
[VOL –]:JP

Example of LCD display