ICF-CD823L - Sony Audio Service Manual (repair manual). Page 8

— 8 —

• The LCD test mode is initiated by turning off the main power once then back on or by resetting the machine while TP415 (LCD TEST, pin-

60 terminal) is connected to GND.

• The LCD test mode operations are listed in the following table.
• When the machine enters the LCD test mode, all LCDs turn on.
• Pressing any key turns off the corresponding segment of the LCD.

KEY

1

2

3

4

5

BAND

SNOOZE

D.S.T

CLOCK +

CLOCK

SEGMENT

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

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

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

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

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

FM, MW, LW

SLEEP

s

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

:, .

KEY

CLOCK

OFF

CD

RADIO

WAKE UP TRACK

CD PLAY MODE

TUEN +

TUEN –

SEGMENT

AM, PM,

A CD

CD H

RADIO

TRACK

REP, 1, ALL, SHUFFLE, CD

B RADIO

B BUZZER

• Pressing the [ALARM TIME CHECK] button at end of the LCD test mode shows the version number of the software on the LCD.
• The alarm-dial position detection can be checked and displayed if the alarm-dial is operated while the version number is being displayed

on LCD.

• State of the [ALARM-B: RADIO/BUZZER] slide switch position can be detected and displayed on the alarm picture.

3-2-1 CD TEST-1 (AUTO)
• The CD TEST-1 (AUTO) mode is initiated by turning off the main power once then back on or by resetting the machine while TP414 (CD

TEST, pin-59 terminal) is connected to GND.

• 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.

F-E BALANCE ADJUSTMENT

TRACKING GAIN ADJUSTMENT

FOCUS BIAS ADJUSTMENT

AM

CD

SRUFFLE

TRACK

• The sled can be moved to the innermost track by pressing the minus (-) button. The sled can be moved to the outermost track by pressing

the plus (+) button.

• When the BAND 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) 1

Setting the 1 track jump

b) 2

Setting the 10 track jump

c) 3

Setting the 100 track jump
Afterwards the desired track jump can be set by pressing the plus (+) or minus (-) button.

d) 4

TRACKING GAIN-UP

e) BAND’s rough servo

• P5 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.
• When the OFF button is pressed, the CD playback is stopped.  If the CD button is pressed again, the machine repeats operations from the

focus search.

3-2-2 CD TEST-2 (MANUAL)
• The CD TEST-2 (MANUAL) mode is initiated by turning off the main power once then back on or by resetting the machine while TP413

(A MUT, pin-58 terminal) 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 minus (-) button. The sled can be moved to the outermost track by pressing

the plus (+) button.

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

the BAND 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.
• When the OFF button is pressed, the CD playback is stopped.  If the CD button is pressed again, the machine repeats operations from the

focus search.

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

(LCD segment)