Clarion PP-2449H-A Manual de serviço - Página 3
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BLOCK DIAGRAM
■
A N T
8 8 0 - 1 9 1 7 B
A M / F M
T U N E R
C D M E C H A N I S M
T A 2 1 5 7 F
T C 9 4 A 1 4 F A
R F A M P
D S P
M O T O R
D R I V E R
B A 5 9 8 3 F P
ADJUSTMENT
■
Item
Procedure
1. Input a 98.1MHz/55dB(1kHz,30% MOD)signal.(0dB=1.4V)
Noise
2. Adjust the output to
convergence
Clock accuracy
1. Turn off and on the ACC switch,while holding CD EJECT button and POWER
button.Repeat it twice slowly.
2. Set a universal timer to TP201,adjust TC201 so that a reading of the meter is
0
±
EXPLANATION OF IC
■
052-1173-00 uPD178076GF-541-3BA
1.Terminal Description
pin
1: EJECT SW_
: IN : The eject key signal input.
pin
2: NU
: - : Not in use.
pin
3: NU
: - : Not in use.
pin
4: VOL DATA
: O : Serial data output to the electric volume IC.
pin
5: VOL CLOCK
: O : Serial data clock output to the electric vol-
ume IC.
pin
6: VOL CE
: O : Chip enable signal output to the volume IC.
pin
7: NU
: - : Not in use.
pin
8: LCD DI_
: IN : Serial data input from the LCD driver.
pin
9: LCD DO
: O : Serial data output to the LCD driver.
pin 10: LCD CLK
: O : Serial data clock output to LCD driver.
pin 11: LCD CE
: O : Chip enable signal output to the LCD driv-
er.
pin 12: NU
: - : Not in use.
pin 13: POWER SW_ : IN : Power switch pulse input.
pin 14: VOL 1
: IN : Volume control pulse input from the rotary
switch.
pin 15: VOL 2
: IN : Volume control pulse input from the rotary
switch.
pin 16: ILL_
: IN : Illumination ON signal input.
pin 17: NU
: - : Not in use.
pin 18: NU
: - : Not in use.
pin 19: NU
: - : Not in use.
pin 20: NU
: - : Not in use.
pin 21: NU
: - : Not in use.
pin 22: NU
: - : Not in use.
pin 23: NU
: - : Not in use.
pin 24: NU
: - : Not in use.
pin 25: NU
: - : Not in use.
pin 26: NU
: - : Not in use.
pin 27: A VDD
: - : Positive supply voltage for the Analog sec-
tion.
L P F
18
3dB by VR102 when the SSG output is set
−
±
0.1 sec/day.
Radio & CD Controller
I C 3 0 2
I C 5 0 1 - 5 0 5
L C 7 5 3 8 6
N J M 2 0 6 0
E L E C T R O N I C
E Q U A L I Z E R
V O L U M E
P P - 2 4 4 9 H - B : N O N F A D E R
I C 2 0 1
u P D 1 7 8 0 7 6 G F
R A D I O / C D
C O N T R O L L E R
I C 9 0 1
L C 7 5 8 5 3
L C D D R I V E R
K E Y
M A T R I X
& S W I T C H
pin 28: NU
pin 29: NU
pin 30: NU
pin 31: NU
pin 32: A VSS
pin 33: REG CPU
pin 34: VDD 0
pin 35: REG OSC
pin 36: X 2
pin 37: X 1
pin 38: GND 0
pin 39: NU
pin 40: GND 2
pin 41: AM IF
pin 42: FM IF
pin 43: VDD PLL
pin 44: FM OSC
pin 45: AM OSC
pin 46: GND PLL
pin 47: Voltage Tune
pin 48: NU
pin 49: IC
pin 50: RESET_
pin 51: SP INIT
pin 52: NU
pin 53: ST_/TWEET_
pin 54: CLK INT
pin 55: AUX ON_
pin 56: TEST
pin 57: LCD ON_
- 3 -
A
F L S P +
O
R L S P +
F R S P +
B
I C 5 0 6
L
R R S P +
T D A 7 5 6 0
E
F L S P -
P O W E R I C
R L S P -
N
F R S P -
F
P
R R S P -
G
N C
H
B A C K U P
I
I L L . C O N T
C
I L L U M I N A T I O N
P O W E R
A C C
S U P P L Y
D
K
N C
1
O N - S I G N A L I N
2
O N - S I G N A L O U T
G N D
J
L C D
6
L -
4
L +
5
R +
R -
7
Measuring
instrument
SSG
20dB
.
Milli-volt meter
−
μ
Universal timer
: - : Not in use.
: - : Not in use.
: - : Not in use.
: - : Not in use.
: - : Analog ground.
: IN : Capacitor connection terminal to suppress
the ripple.
: - : Positive supply voltage.
: IN : Capacitor connection terminal to suppress
the ripple.
: - : Crystal connection.
: - : Crystal connection.
: - : Ground.
: - : Not in use.
: - : Ground.
: IN : Input terminal of the internal universal
counter for AM IF.
: IN : Input terminal of the internal universal
counter for FM IF.
: - : Positive supply voltage for the PLL.
: IN : Input terminal of the internal counter for FM
OSC( Local Oscillation ).
: IN : Input terminal of the internal counter for AM
OSC( Local Oscillation ).
: - : Ground for the PLL.
: O : PLL error output.
: - : Not in use.
: IN : Not in use.
: IN : Reset signal input.
: IN : 4SP = "L" , 2SP = "H".
: - : Not in use.
:I/O: Outputs "L" at AM 900kHz receiving. Inputs
"L" at FM stereo receiving.
: IN : Without the clock display = "H".
: IN : AUX ON signal input.
: IN : Test enable signal input.
: O : LCD back light ON signal output.
PP-2449H