Test Mode - Sony ICF-CD830 Service Manual

3-1. LCD Test Mode
• 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
s
D.S.T.
ALARM MODE ALARM CD RADIO BUZZER
ALARM SET CD ALARM-CD LED
ALARM SET BUZZER ALARM-BUZZER LED
ALARM SET RADIO ALARM-RADIO LED
CLOCK AM, PM,:
1a, 1b, 1c, 1d, 1e, 1f, 1g,
TIME SET –
2a, 2b, 2c, 2d, 2e, 2f, 2g
3a, 3b, 3c, 3d, 3e, 3f, 3g,
TIME SET +
4a, 4b, 4c, 4d, 4e, 4f, 4g
• 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.
3-2. CD Test Mode
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 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.
AM
• 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
b) ALARM SET RADIO
c) ALARM SET BUZZER
d) ALARM MODE
e) RADIO
• 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.
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 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.
SECTION 3

TEST MODE

SEGMENT
CD PLAY MODE
CD
RADIO
OFF
SNOOZE/DATE/
SLEEP OFF
CD
SHUFFLE
TRACK
Setting the 1 track jump
Setting the 10 track jump
Setting the 100 track jump
Afterwards the desired track jump can be set by pressing the > or . button.
TRACKING GAIN-UP
Rough servo
(LCD segment)
1 2
KEY SEGMENT
REP, 1, ALL, SHUFFLE,
, , ,
CD, H, TRACK
RADIO, SLEEP
5a, 5b, 5c, 5d, 5e, 5f, 5g,
6a, 6b, 6c, 6d, 6e, 6f, 6g
F-E BALANCE ADJUSTMENT
TRACKING GAIN ADJUSTMENT
FOCUS BIAS ADJUSTMENT
ICF-CD830/CD830L
f
e
d
3 4 5 6
a
b
g
c
7