Read Panasonic CQ-LA1923L Service Manual online
6.1. MAIN BLOCK
IC601 C2BBGG000014
Pin
No.
Name
Descripotion
I/O
VolT (V)
FM AM Tap
e
1
RES
Reset Input
I
4.9 4.9 4.9
2
XTAL
X-tal
I
1.6 1.6 1.6
3
EXTAL
X-tal
I
2.3 2.3 2.3
4
MD1
Connect to Vdd
─ 4.9 4.9 4.9
5
MD0
Connect to Vdd
─ 4.9 4.9 4.9
6
NMI
Connect to Vdd
─ 4.9 4.9 4.9
7
STBY
Connect to Vdd
─ 4.9 4.9 4.9
8
VDD
Power Supply (+5V)
─ 4.9 4.9 4.9
9
CD-CLK
Clock Input (from CD
Changer)
Changer)
I
0
0
0
10 CD-DATA
Data Input (from CD Changer)
I
0
0
0
11 CD-REMO
Data Output (to CD Changer)
O
4.9 4.9 4.9
12 GND
Connect to Ground
─
0
0
0
13 ANT-CONT F. Antenna Votage Contorol
O
4.6 4.6 4.6
14 TIM MON
IN
TIM Memory status Input
─
0
0
0
15 S CONT
ON/OFF
S. CONT status monitor
I
0
0
0
16 T MUTE
ON/OFF
T. MUTE status monitor
I
4.9 4.9 4.9
17 N CONT
ON/OFF
NAVI. MUTE status monitor
I
4.9 4.9 4.9
18 BATT DET
Low Votage detect
I
4.9 4.9 4.9
19 CONT
S.Cont T.Mute N.Cont Signals
Detect
Detect
I
4.9 4.9 4.9
20 P-ON
POWER Switch ON/OFF
detect
detect
I
0
0
0
21 LED CLK
Clock Output (to LED)
O
0
0
0
22 LED
DATA/LCD
SID
SID
Data Output (to LED TIM
LCD)
LCD)
I
4.9 4.9 4.9
23 VOL UP
Volume Up Signal Input
I
0
0
0
24 VOL DOWN Volume Down Signal Input
I
4.9 4.9 4.9
25 LCD
SCLK/E2
CLK
CLK
Clock Output (to LCD E2 TIM)
O
4.9 4.9 4.9
26 LCD CS
LCD Chip Select
O
4.9 4.9
0
27 R CLK
R. Clock Output
O
4.9 4.9 4.9
28 RDS CLK
Clock Input (for RDS)
I
2.5
0
2.5
29 VDD
Power Supply (+5V)
─ 4.9 4.9 4.9
30 V CONT
Signal Strength level Input
I
0.4 0.4 0.4
31 MP
Multi-path Signal Input
I
0
0
0
32 NOISE
Noise level Signal Input
I
1.3
0
1.3
33 P SENSOR
IN
Photo Sensor Signal Input
I
0
0
0
34 +B
MONITOR
+B Voltage Monitor
I
3.4 3.4 3.4
35 SP-OUT R
SP Output Input (for Self
Check function)
Check function)
I
2.9 2.9 2.9
36 F-ANT
ANT+ Shor detect (for Self
Check function)
Check function)
I
1.5 1.5 1.5
37 SP-OUT L
SP Output Input (for Self
Check function)
Check function)
I
2.9 2.9 2.9
38 GND
Connect to Ground
─
0
0
0
39 RDS DATA
Data Input (for RDS)
I
2.5
0
2.5
40 LCD SOD
Data Input (from LCD)
I
4.9 4.9 4.9
41 LCD RESET Reset Output (to LCD)
O
4.9 4.9 4.9
42 STANDBY
Power Control Output (for
Audio Circuit)
Audio Circuit)
O
4.9 4.9 4.9
43 RADIO ON
RADIO ANT VAR ON Signal
Output
Output
O
4.6 4.6 4.6
44 TIM ST
Strobe Signal for TIM
O
0
0
0
Pin
No.
Name
Descripotion
I/O
VolT (V)
FM AM Tap
e
45 P-ON H
LCD INDICATOR Illumination
ON Signal
ON Signal
O
4.9 4.9 4.9
46 WARNING
TONE(NC)
─
─
─
─
─
47 VDD
Power Supply (+5V)
─ 4.9 4.9 4.9
48 E2 DI
Data Output (to EEPROM)
O
0
0
0
49 E2 CE
Chip Enable Output (to
EEPROM)
EEPROM)
O
0
0
0
50 GALA
GALA Signal Input
I
0
0
0
51 AF MUTE
Audio Mute Signal Output
O
4.9 4.9 4.9
52 MUTE
Mute Signal Output (for Audio
Power Amp.)
Power Amp.)
O
4.9 4.9 4.9
53 E2 DO
Data Input (from EEPROM)
I
0
0
0
54 E-VOL
DATA
Data Output (to Main Volume
Control)
Control)
O
0
0
0
55 E-VOL CLK Clock Output (to Main Volume
Control)
O
0
0
0
56 GND
Connect to Ground
─
0
0
0
57 PLL DI
Data Output (to PLL)
O
0
0
0
58 PLL DO
Data Input (from PLL)
I
4.9 4.9 4.9
59 PLL CLK
Clock Output (to PLL)
O
0
0
0
60 PLL CE
Chip Enable Output (to PLL)
O
0
0
0
61 M ON
Tape Deck Powr ON control
Output
Output
O
4.9 4.9 4.9
62 TMS
Tape Music Sensor Signal
Input
Input
I
0
0
0
63 A/B OUT
Tape Play Side (A/B) Select
Signal Output
Signal Output
O
0
0
4.9
64 DOLBY
Doby ON/OFF Signal Output
O
0
0
4.9
65 PLAY SW
Play SW Signal Input (from
Tape Deck)
Tape Deck)
I
0
0
0
66 DATA OUT
Data Output (to Tape Deck)
O
0
0
0
67 T MONITOR Thermal Sensor Input (from
Tape Deck)
I
4.9 4.9 4.9
68 DATA IN
Data Input (from Tape Deck)
I
4.9 4.9 4.9
69 T ENA
Tape Deck Enable
O
4.9 4.9 4.9
70 SV ST
Strobe Output (to Sub Volume
Conttol)
Conttol)
O
0
0
0
71 SV CLK
Clock Output (to Sub Volume
Conttol)
Conttol)
O
0
0
0
72 SV DATA
Data Output (to Sub Volume
Conttol)
Conttol)
O
0
0
0
73 GND
Connect to Ground
─
0
0
0
74 S-uCOM
CLK
Clock Output (to Sub CPU)
O
4.9 4.9 4.9
75 S-uCOM
DATA OUT
data Output (to Sub CPU)
O
4.9 2.5 1.7
76 S-uCOM
DATA IN
Data Input (form Sub CPU)
I
4.9
2
2
77 ESET OUT
Reset Output (to Sub CPU)
O
4.9 4.9 4.9
78 K-LINE OUT Serial Data Output (to Car
System)
O
4.9 4.9 4.9
79 K-LINE IN
Serial Data Input (from Car
System)
System)
I
4.9 4.9 4.9
80 CLK I/O
Clock In/Out (for Tape Deck)
I/O 4.9 4.9 4.9
6 TERMINALS DESCRIPTION
6
AUDI / CQ-LA1923L
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