Pioneer XV-HA5 Service Manual page 37

5
Note : The encircled numbers denote measuring point in the schematic diagram.
C
IF ASSY
SYSTEM Microcomputer(IC)<–>Each part communication waveform
IC5501-pin 25 [SCLK0] IC5501-pin 23 [SDATA0]
1 2
V: 2V/div. H: 20us/div. V: 2V/div. H: 20us/div.
[MD]
IC5501-pin 28 [LCDCLK] IC5501-pin 26 [LCDDATA]
4 5
V: 2V/div. H: 5us/div. V: 2V/div. H: 5us/div.
[ANY FUNCTION]
IC5501-pin 51 [SCLK2] IC5501-pin 49 [SDATA2]
10 11
V: 2V/div. H: 10us/div. V: 2V/div. H: 10us/div.
[DVD]
IC5501-pin 61 [TXCLK] IC5501-pin 62 [TXODATA]
13 14
V: 2V/div. H: 100us/div. V: 2V/div. H: 100us/div.
[TUNER]
D
DISP ASSY
USB Interface data waveform
5
6
IC5501-pin 25 [SCLK0]
1
V: 2V/div. H: 20us/div.
[MD]
1
GND
2
GND
IC5501-pin 46 [VOLCLK]
6
V: 2V/div. H: 100us/div.
[VOL UP/DOWN]
4
GND
5
GND
IC5501-pin 51 [SCLK2]
10
V: 2V/div. H: 10us/div.
[DVD]
10
GND
11
GND
IC5501-pin 61 [TXCLK]
13
V: 2V/div. H: 100us/div.
[TUNER]
13
GND
14
GND
IC5201-pin 1 [D+]
1
V: 2V/div. H: 500us/div.
[USB (At connecting PC)]
XV-HA5
6
7
IC5501-pin 23 [MDATA0]
3
V: 2V/div. H: 20us/div.
1
GND
3
GND
IC5501-pin 45 [VOLDATA] IC5501-pin 48 [SELCLK]
7 8
V: 2V/div. H: 100us/div. V: 2V/div. H: 50us/div.
6
GND
7
GND
IC5501-pin 50 [MDATA2]
12
V: 2V/div. H: 10us/div.
10
GND
12
GND
IC5501-pin 66 [TXIDATA]
15
V: 2V/div. H: 100us/div.
13
GND
15
GND
IC5201-pin 2 [D-]
2
V: 2V/div. H: 500us/div.
1
GND
2
GND
7
8
IC5501-pin 47 [SELDATA]
9
V: 2V/div. H: 50us/div.
[FUNCTION CHANGE]
8
GND
9
GND
8
A
B
C
D
E
F
37