Panasonic CQ-LT1010X Service Manual ▷ View online
6.1. Main Block
IC601 : C2BBGF000087
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
1
STBY
Voltage generator stand-by
O
4.9
2
LATCH
Voltage generator data latch
O
4.9
3-5
NC
No connection
-
-
6
MUTE
Mute
O
0
7
DATE
Voltage generator data
O
0
8
CLK
Voltage generator clock
O
0
9
EQ
Metal tape detection
I
0
10
BIT3
Tape mode SW
I
4.9
11
BIT2
Tape mode SW
I
4.9
12
BIT1
Tape mode SW
I
0
13
VOL CLK
Clock for electronic volume
O
0
14
VOL DATA
Data for electronic volume
O
0
15
RIN
Tape motor control
O
0
16
FIN
Tape motor control
O
0
17
-
Not used
-
-
18
IFZ
(Connecting to ground)
-
0
19
DX/OC
Not used
-
-
20
ST
FM stereo detection
I
0
21
SSC
Search stop clear
O
0
22
SD
B/S detection
I
0
23
REO-IN
Illumi. (-) detection
5.0
24
ACC-DET
ACC level detection
2.0
25
+B-DET
Battery level detection
1.7
26
ILL-DET
Illumi.(+) detection
2.3
27
VDD
+5V power supply
-
4.9
28
VSM
(Connecting to ground)
-
0
29
MAIN VOL
(Connecting to ground)
-
0
30
GND
Ground
-
0
31
GND
Ground
-
0
32
AVSS
Ground
-
0
33
REGCPU
Bypass capacitor terminal
I
3.4
34
VDD1
+5V power supply
-
4.9
35
REGOSC
Bypass capacitor terminal
I
4.9
36
X2
Crystal oscillator
-
1.9
37
X1
Crystal oscillator
-
1.8
38
GND0
Ground
-
0
39
NC
No connection
-
-
40
GND2
Ground
-
0
41
AM IF
AM IF input
I
1.8
42
FM IF
FM IF input
I
2.0
43
VDD PLL
+5V power supply
-
4.9
44
FM OSC
FM local oscillator
I
2.3
45
AM OSC
AM local oscillator
I
0
46
GND PLL
Ground
-
0
47
EO0
PLL phase-comp. error
O
1.6
48
NC
No connection
-
-
49
IC
(Connecting to ground)
-
0
50
RESET
Reset input
I
4.5
51
VOL B
Rotary encoder data for volume
I
4.8
52
VOL A
Rotary encoder data for volume
I
4.8
53
RESMON
Reset output (Vdd=4.5V)
O
4.9
54
LCD-DO
LCD data
I
4.9
55
LCD-DI
LCD data
O
0
56
LCD-CE
LCD driver chip enable
O
0
57
LCD-CLK
LCD clock
O
0
58
SIMUKE1
Destination setting
I
0
59
BEEP
Beep output
O
0
60
SIYOU
Specification setting
I
4.4
61
PWM ILL
ILL power control
O
7.3
62
PWM LCD
LCD power cotrol
O
7.3
63
M2F
Main motor control
O
0
64-68 NC
No connection
-
-
69
SO
Not used
-
0
70
SI
Not used
-
0
71, 72 NC
No connection
-
-
73
D.IN
LAN data
O
0
74
D.OUT
LAN data
I
0
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
75
NC
No connection
-
-
76
MODE B
Rotary encoder for mode SW
I
4.8
77
MODE A
Rotary encoder for mode SW
I
4.8
78
TAPE EJ
Tape eject SW
I
4.5
79
CD EJ
Not used
-
-
80
INTERS
Reset input (Vdd=4.5V)
I
4.9
81
SIMUKE2
Destination setting
I
4.9
82
GND1
Ground
-
0
83-86 NC
No connection
-
-
87
MS-PL/FF
MS mode selection
O
0
88
CAM A/B
Tape side detection
I
0
89
MTL
Metal tape mode on/off
O
0.5
90
DOLBY
Dolby control
O
5.0
91
MS OUT
TPS detection
I
0.6
92
MSM
MS gain control
O
0
93
AMP-ON
Amp power control
O
4.9
94
T.IN
Tape detection
I
0
95
T.LOAD
Tape loading detection
I
0.6
96
A/B
Tape side SW
I
0
97
END A
Tape end detection
I
2.8
98
END B
Tape end detection
I
2.5
99
VDD
+5V power supply
-
4.9
100
GND
Ground
-
0
Note :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
voltmeter (Internal resistance : 10M ohms.)
6.2. Display Block
IC901 : C0HBA0000016
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
1-33
SEG1-33
LCD segment data
O
2.5
34-40 SEG34-40
Not used
-
-
41-43 COM1-3
LCD common
O
2.5
44
KS1/S41
Not used
-
-
45-49
KS2-9
Key scan
O
0.9
50-54 KI1-5
Key data
I
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.1
57
VDD1
Ground
through
capacitor
terminal
-
3.3
58
VDD2
Ground
through
capacitor
terminal
-
1.7
56
Vss
Ground
-
0
60
OSC
CR oscillator terminal
-
3.9
61
DO
LCD data
O
4.4
62
CE
LCD driver chip enable
I
0
63
CL
Clock for LCD
I
0
64
DI
LCD data
I
0
6 TERMINALS DESCRIPTION
5
CQ-LT1010X
7 PACKAGE AND IC BLOCK DIAGRAM
7.1. Main Block
PA101 YEP0PTA514B0
IC851 : C1BB00000100
6
CQ-LT1010X
IC231 : AN7551Z
IC201 : C1BB00000284
IC701 : C0DBZHZ00005
IC791 : C1BB00000034
IC801 : C0GBG0000004
7.2. Fix-EQ. Block
IC1, 3, 61 : YEAMM5218AFE
IC2, 62 : YEAMTA2062FL
7
CQ-LT1010X
∙
Power Supply Voltage : DC13.2V
∙
Output Impedance : 4
Ω
∙
Output Power : 0.5W
∙
Balance, Fader Control : center
∙
Bass, Treble Control : Center
8 ALIGNMENT INSTRUCTIONS
8.1. Alignment Conditions
Note :
Do not align the FM/AM package block. When the package block is necessary, it will be supplied already aligned at the
factory.
factory.
8.2. Dolby NR Alignment
Step
Alignment Item
Test Tape
VTVM Connection
Adjust
Remarks
(1)
DOLBY NR Rch
RFKZ0038
TP821
VR821
Adjust for 388mV ±1.0dB
(2)
DOLBY NR Lch
RFKZ0038
TP831
VR831
Adjust for 388mV ±1.0dB
9 ALIGNMENT POINTS
8
CQ-LT1010X
Click on the first or last page to see other CQ-LT1010X service manuals if exist.