Pioneer DEH-1500RXU/EW Service Manual page 60

1
EE model
A
- FM/AM Tuner Unit
AM ANT
FMRF
B
1
ATT
FM ANT
3
ATT
FMRF
ANT adj
C
No. Symbol I/O Explain
1 AMANT I
2 RFGND
3 FMANT I
4 VCC
D
5 SL O signal level
6 CE2 I
7 WC I
8 CE1 I
9 CK I
10 DI I
11 NC
12 OSCGND
13 ROM_VDD
14 DO O data out
E
15 DGND
16 NC
17 VDD_3.3
18 NC
19 NC
20 NC
21 NC
22 AUDIOGND
23 L ch O L channel output
24 R ch O R channel output
F
60
1
2
7 6
IC 3 EEPROM
5.0V
OSC
IC 1
3.3V
MIXER, IF AMP
RF adj
T51
2 12 15 22 16 4
AM antenna input AM antenna input high impedance AMANT pin is connected with
an all antenna by way of 4.7 H. (LAU type inductor) A series circuit
including an inductor and a resistor is connected with RF ground for
the countermeasure against the ham of power transmission line.
RF ground Ground of antenna block
FM antenna input Input of FM antenna 75 Surge absorber
power supply The power supply for analog block. D.C 8.4V
Output of FM/AM signals level
chip enable-2 Chip enable for EEPROM " Low" active
write control You can write EEPROM, when EEPROM write control is " Low" .
Ordinary non connection
chip enable-1 Chip enable for AF•RF " High" active
clock Clock
data in Data input
non connection Not used
osc ground Ground of oscillator block
power supply Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
Data output
digital ground Ground of digital block
non connection Not used
power supply The power supply for digital block. 3.3V
non connection Not used
non connection Not used
non connection Not used
non connection Not used
audio ground Ground of audio block
FM stereo " L-ch" signal output or AM audio output
FM stereo " R-ch" signal output or AM audio output
2
3
13 5 10 9 8 11 14 18 19 20 21
IC 5
5V 3.3V
LPF
CF52
CF51
IC 4
3.3V 2.5V
3.3V 2.5V
17
DEH-1500R/XU/EW
3
4
Rch
24
IC 2
2.5V
Lch
23
DET, FM MPX
(DSP-201M-S00B) is necessary.
0.3V
0.2V
4