ICD-B600 (serv.man2) - Sony Audio Service Manual (repair manual). Page 6

1.  Outline of the TEST MODE
The TEST MODE is designed to help verify the set when servic-
ing it.
The TEST MODE is only menu driven to select modes for servic-
ing.

2.  Entering and Canceling the TEST MODE
With the power on, turn on the [HOLD] switch while pressing the 
[

x

] button and the [DISPLAY/MENU] button at the same time.

3.  Canceling the TEST MODE
The TEST MODE can be cancelled by turning off the power (un-
plugging the dry battery).

4.  Menu Key Designation
The menu has the fi ve modes described below. The following keys 
are assigned on the initial screen (version display).

From within TEST MODE, the intended menu can be entered by 
using the appropriate one key of the following key.

LCD Test (All On

yAll Off)

DISPLAY/MENU

LCD Test (All Off)

NxPLAY/ENTER

BEEP Test (1.3 kHz)

ERASE

HQ-DSP LOOP

zXREC

SP-DSP LOOP

– .

LP-DSP LOOP

> +

REST MENU Test

DIVIDE

Initial Display from each mode

x

5-1.  Initial Display in TEST MODE
LCD indications (destination information, memory capacity, CPU 
FW information and MIC sens) when TEST MODE is entered:

Memory capacity
(512-512 MB)

MIC sens

Destination
information

CPU FW information

5-2. LCD Test
To enter the LCD Test, press the [DISPLAY/MENU] button. The 
LCD Test has two modes: All On and All Off First all the indica-
tors are on. All the indicators are off when the button is pressed 
again.

ALL ON

DISPLAY/MENU

Switch between
the modes.

ALL OFF

Press the [

x

] button to return to the initial display (destination 

information, memory capacity, CPU FW information and MIC 
sens).

5-3. BEEP Test
To enter the BEEP Test, press the [ERASE] button.

Beep: Frequency 1.3 kHz only

Press the [

x

] button to return to the initial screen (memory and 

CPU version).

5-4.  DSP  LOOP
The DSP LOOP modes can be entered selectively by pressing the 
appropriate one of the following three keys.
Within the LOOP test menu, “LOOP” is displayed. The sensitivity 
character H or L is displayed depending on the position into which 
the [HOLD] switch is placed.
The sensitivity H is displayed when [HOLD] switch is in the ON 
position. The sensitivity L is displayed when [HOLD] switch is in 
the OFF position.

                     

[9 REC

To change the DSP LOOP test mode, press the [

x

] button, then 

select the [

zX

REC] button, [– 

.

] button, or [

>

 +] button.

In a DSP Test mode, to select another DSP Test mode and to select 
the other sensitivity, the [

x

] button also has to be pressed.