ICF-CD830, ICF-CD830L - Sony Audio Service Manual (repair manual). Page 7

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• The LCD test mode is initiated by turning off the main power once then

back on or by resetting the machine while IC401 pin-60 terminal is
connected to GND, or while depressing the  D.S.T. ,  ALARM MODE  and
RADIO  keys simultaneously.

• The LCD test mode operations are listed in the following table.
• When the machine enters the LCD test mode, the version number of the

system control IC is displayed on the LCD.

• Pressing the  SNOOZE/DATE/SLEEP OFF  key turns on all segments of

LCD and LEDs.

• Pressing any key turns off the corresponding segment of the LCD.

Correspondence between the keys and segments of LCD are as follows.

KEY

D.S.T.

ALARM MODE

ALARM SET CD

ALARM SET BUZZER

ALARM SET RADIO

CLOCK

TIME SET –

TIME SET +

SEGMENT

s

ALARM  CD RADIO BUZZER

ALARM-CD LED

ALARM-BUZZER LED

ALARM-RADIO LED

AM, PM,:

1a, 1b, 1c, 1d, 1e, 1f, 1g,

2a, 2b, 2c, 2d, 2e, 2f, 2g

3a, 3b, 3c, 3d, 3e, 3f, 3g,

4a, 4b, 4c, 4d, 4e, 4f, 4g

KEY

CD PLAY MODE

CD

RADIO

OFF

SNOOZE/DATE/

SLEEP OFF

SEGMENT

REP, 1, ALL, SHUFFLE,

   ,    ,    ,

CD, H,    TRACK

RADIO, SLEEP

5a, 5b, 5c, 5d, 5e, 5f, 5g,

6a, 6b, 6c, 6d, 6e, 6f, 6g

• After all segments of LCD and LEDs turn off, pressing the  SNOOZE/DATE/SLEEP OFF  key ends the LCD test mode and resets the

machine.

• The CD TEST-1 (AUTO) mode is initiated by turning off the main power once then back on or by resetting the machine while IC401 pin-

59 terminal (RADIO LED) is connected to GND, or while depressing the  D.S.T. ,  ALARM MODE  and  CD  keys simultaneously.

• When the machine enters CD TEST-1 (AUTO) mode, it repeats the focus search until the focus becomes OK.
• After the focus becomes OK and the focus is automatically adjusted, rough servo is locked in and the adjustment value is displayed.

• The sled can be moved to the innermost track by pressing the  .  button. The sled can be moved to the outermost track by pressing

the  >  button.

• When the  RADIO  button is pressed, the machine enters the CLVA (servo ON) and the mute is turned OFF if data is read successfully.

When the following button is pressed, the corresponding operations are performed.

a)   ALARM SET CD

Setting the 1 track jump

b)   ALARM SET RADIO

Setting the 10 track jump

c)   ALARM SET BUZZER

Setting the 100 track jump
Afterwards the desired track jump can be set by pressing the  >  or  .  button.

d)   ALARM MODE

TRACKING GAIN-UP

e)   RADIO

Rough servo

•  D.S.T.  restarts CD TEST-1 (AUTO) mode from the focus automatic adjustment
• When the  CD  button is pressed then, the track jumps to the second session and the machine exits the CD TEST-1 (AUTO) mode.

• The CD TEST-2 (MANUAL) mode is initiated by turning off the main power once then back on or by resetting the machine while IC401

pin-58 terminal (CD LED) is connected to GND.

• When the machine enters CD TEST-2 (MANUAL) mode, it repeats the focus search until the focus becomes OK.
• After the focus becomes OK, the machine enters the rough servo.
• The sled can be moved to the innermost track by pressing the  .  button. The sled can be moved to the outermost track by pressing the

>  button.

• When the  RADIO  button is pressed, the machine enters the CLVA (servo ON) and the mute is turned OFF if data is read successfully.

When the  RADIO  button is pressed again, the machine enters the rough servo.

• When the  CD  button is pressed then, the track jumps to the second session and the machine exits the CD TEST-2 (MANUAL) mode.

(LCD segment)

F-E BALANCE ADJUSTMENT

TRACKING GAIN ADJUSTMENT

FOCUS BIAS ADJUSTMENT

AM

CD

SHUFFLE

TRACK

a

1

2

3

4

5

6

f

g

b

c

e

d