Aiwa FR-A705, Service Manual

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11
V1
C1, C2
VSS
VXT
BRESET
XLIN
XLOUT
VDD
XHIN
XHOUT
TEST
BUZZER OUT
BUCK UP
JOG IN1
JOG IN2
FAST KEY
SET KEY
SLEEP KEY
SNOOZE KEY
DAY KEY
ALARM IN 1
ALARM IN 2
ALARM IN 3
ALARM IN 4
POWER ON
POWER OUT
EL
24H IN
S1-S60
COM1-COM8
V4-V2
1
2, 3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30-89
90-97
98-100
IC, TMP04CH00F350
Pin No. Pin Name I/O Description
IC DESCRIPTION
O
—
—
O
I
I
O
—
I
O
I
O
I
I
I
I
I
I
I
I
I
I
I
I
I
O
O
I
O
O
O
Regulator-2 output.
Capacitor terminal for LCD step-up voltage.
Power supply (–).
Regulator-1 output (It is outputted in 3.0 V type only).
Reset input (active at low).
Terminal to which external crystal for low speed oscillation is connected.
Power supply (+).
Terminal to which external crystal/resistor for high-speed oscillation is connected.
TEST input.
Outputs the buzzer signal when it reaches the alarm time.
H: Normal state L: Backup mode (Power off state). See Note.
Modification of the time shall be made by the JOG spec.
H: JOG UP/DOWN is set to 10 minutes by one click.
L: JOG UP/DOWN is set to 1 minute by one click.
Sets the time, cancels the alarm and starts the date setting mode.
Used to set the sleep setting and to check the remaining time.
Cancels the alarm by every 5 minutes and cancels sleep.
Sets and cancels the summertime. And toggles between the alarm display and date
display.
H: When the ALARM mode switch is in the 1, or 1 + 2.
L: When the ALARM mode switch is in the 2.
H: When the ALARM mode switch is in the 1 + 2 or 2.
L: When the ALARM mode switch is in the 1.
H: When the POWER switch is in ALARM.
L: When the POWER switch is in ON or STANDBY.
H: When the ALARM function switch is in the BUZZER position.
L: When the ALARM function switch is in the RADIO position.
Recognizes the POWER (RADIO) ON/OFF.
H: RADIO output. L: STANDBY state.
When any key input (short pressing) is present, “H” is outputted for 5 seconds. Or “H”
is continuously outputted when the SNOOZE key is pressed for a long time.
H: 24H. L: 12H.
LCD segment output.
LCD common output.
Stepped-up voltage output.
Note: In the BACKUP mode, the present time and the ALARM time setup are kept alive while the other functions are turned off (LCD is
also turned off).
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