TOYOTA CQ-LS7230k Service Manual
Specification*
CQ-LS7230K
AM/FM MPX Electronic Tuning Radio
with Stereo Cassette Tape Player
PART No. : 86120-02360
VEHICLE : COROLLA
DESTINATION : INDIA
PRODUCED AFTER : Nov., 2002
General
Power Supply DC 12V (11V - 16V),
Test Voltage 26.4V
Negative Ground
Current Consumption Less than 3.0A
Power Output 20W×4ch
AM Radio
Frequency Range 531 - 1,602kHz
Usable Sensitivity 30dB(µV) (S/N 20dB)
Signal to Noise Ratio 45dB or more
FM Stereo Radio
Frequency Range 87.5 - 108.0MHz
Usable Sensitivity 7dB/µV (S/N 30dB)
Signal to Noise Ratio 50dB or more
Cassette Player
Reproduction System 4-Track, 2-Program Stereo
Tape Speed 4.76cm/sec.
Wow and Flutter Less than 0.09% (WRMS)
Signal to Noise Ratio 40dB or more
Dimensions** 178×50×165mm
Weight** 1.3kg
* Specifications and the design are subject to possible modification
without notice due to improvements.
** Dimensions and Weight shown are approximate.
Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
“Dolby” and the double-D symbol
Laboratories Licensing Corporation.
are trade marks of Dolby
CQ-LS7230K
CONTENTS
Page Page
1 FEATUERS 2
2 REAR VIEW AND CONNECTORS
3 FRONT VIEW AND FUNCTIONS
4 WIRING CONNECTION
5 BLOCK DIAGRAM
6 TERMINALS DESCRIPTION
7 PACKAGE AND IC BLOCK DIAGRAM
8 ALIGNMENT INSTRUCTIONS
9 ALIGNMENT POINTS 9
2
10 REPLACEM ENT PARTS LIST
11 EXPLODED VIEW (Unit)
3
4
12 TAPE PLAYER PARTS
13 EXPLODED VIEW (Tape Deck)
5
6
14 WIRING DIAGRAM
7
15 SCHEMATIC DIAGRAM -1
16 SCHEMATIC DIAGRAM-2
9
1 FEATUERS
•
• PLL (Phase Locked Loop) synthesized tuning.
• •
•
• 12-station preset (6-AM, 6-FM).
• •
•
• Scan tuning function.
• •
•
• Dolby B NR function.
• •
•
• CD changer control.
• •
•
• Electronic volume control.
• •
•
• Fix-Equalizing function.
• •
2 REAR VIEW AND CONNECTORS
10
14
15
16
17
23
25
2
3 FRONT VIEW AND FUNCTIONS
CQ-LS7230K
3
CQ-LS7230K
4 WIRING CONNECTION
4
5 BLOCK DIAGRAM
CQ-LS7230K
5
CQ-LS7230K
6 TERMINALS DESCRIPTION
6.1. Main Block
IC601 : C2BBGE000647
Pin
No.
1 LCD-CL Clock for LCD data O 0
2 LCD-DI LCD data O 0
3 SEC TIME No connection - 4 GND Ground - 0
5 LCD.ON Not used - 6 ILL.ON Not used - 7 VDD +5V power supply - 5
8 SEC ON Not used - -
9~12 - Not used - -
13 M1-B Tape main motor control O 0
14 M1-A Tape main motor control O 0
15 - (Connecting tp ground) - 0
16 - (Connecting tp ground) - 0
17 POM SO Not used - 18 ROM SI Not used - 19 ROM CS Not used - 20 ROM CSK Not used - 21 LATH Data latch O 5
22 A/B Tape FF/REW switch I 0
23 /MTL Metal tape mode O 5
24 DATA Data for system power IC O 0
25 CLK Clock for system power IC O 0
26 STBY System power IC stand-by O 5
27 /MS TPS no sound detection I 0
28 MS PL/FF MS mode selection O 0
29 T.LOAD Tape loading detection I 0
30 /DOLBY Dolby control O 0
31 CAM-A/B Tape side detection I 5
32 /T.IN Tape insert detection I 0
33 GND Ground - 0
34 TE2 Tape end detection I 1.8
35 TE1 Tape end detection I 2.2
36, 37 DIV1,2 Not used - -
38 /M2F Tape solenoid control O 0.5
39 SEC LED Not used - 40 MSM MS gain control O 0
41 /EQ Metal tape detection I 0
42 BIT3 Tape moe SW I 0
43 BIT2 Tape mode SW I 4.9
44 BIT1 Tape mode SW I 4.9
45 MUTE Mute output O 0
46 BEEP Beep output O 0
47 VOL DAT Data for electronic vol. O 0
48 VOL CLK Clock for electronic vol. O 0
49 NC No connection - 50 TEST (+5V pull-up) - 4.2
51 MAIN Not used - 52 PLL.DO PLL data I 4.9
53 PLL.CLK PLL clock O 0
54 PLL.DI PLL data O 0
55 PLL.CE PLL chip enabling O 0
56 LAN-OUT LAN data O 0
57 LAN-IN LAN data I 0.2
58 ST FM stereo detection I 0
59 SD B/S detection I 0
60 /RESET System reset I 3.5
61 /ILL-DET illumi. on detection I 3.5
62 +B-DET Battery level detection I 3.2
63 ACC-DET ACC level detection I 3.4
64 /T.EJECT Tape eject I 3.4
Port Description I/O (V)
65 AN NK Not used - 66 MODE B Not used - 67 MODE A Not used - 68 VDD +5V power supply - 4.9
69 X1 Crystal oscillatorv terminal - 2.4
70 X2 Crystal oscillatorv terminal - 0.6
71 GND Ground - 0
72 XT2 Not used - 73 XT1 Not used - 74 AVDD +5V power supply - 5
75 ACC 5V +5V power supply - 5
76 VSM Not used - 77 MAIN-VOL Main volume level I 0
78 REO.IN (Ground pull-down) - 0
79 LCD-DO LCD data I 4.9
80 LCD-CE LCD driver enabling O 0
6.2. Display Block
IC601 : YEAMLC75853
Pin
No.
1-20 SEG1-20 LCD segment data O 2.6
21-28 - Not used - 29-40 SEG29-40 LCD segment data O 2.6
41-43 COM1-3 LCD common output O 2.6
44 S41 Not used - -
45-49 KS1-6 Key scan signal O 5.2
50 KI1 Not used - -
51-54 KI2-5 Key data input I 0
55 TEST (Connecting to ground) - 0
56 VDD +5V power supply - 5.2
57 VDD1 Ground through capacitor - 3.5
58 VDD2 Ground through capacitor - 1.8
59 VSS Ground - 0
60 OSC CR oscillator - 4.1
61 DO key data output O 5.2
62 CE Chip enable I 0
63 CLK LCD clock I 0
64 DI LCD data input I 0
Port Description I/O (V)
6
7 PACKAGE AND IC BLOCK DIAGRAM
7.1. Main Block
CQ-LS7230K
PA101 : YEP0PTA512B0
IC451 : YEAMLC72135C
7
CQ-LS7230K
IC631 : YEAMLB1930MT
IC201 : YEAMM62435FA
IC651 : YEAMH12187ER
IC231 : YEAMTA8251AH
IC701 : C0DBZHZ00006
8
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