Pioneer VSX-321-K-P Service Manual page 22

1
A
Step 6: SDA /SCL
IC201 (pin 7)
Does a signal output
in constant period
(0 to 5 V)?
Yes
IC201 (pin 6)
B
Does a signal output
in constant period
(0 to 5 V)?
Yes
IC200 (pin 85) SDA
IC200 (pin 86) SCL
Is the voltage swing
0 to 5 V?
Yes
C
IC200 (pin 83) SDA
IC200 (pin 84) SCL
Is the voltage swing
0 to 5 V?
Yes
IC200 (pin 81) SDA
IC200 (pin 82) SCL
Is the voltage swing
D
0 to 5 V?
Yes
IC200 (pin 114) SDA
IC200 (pin 115) SCL
Is the voltage swing
0 to 5 V?
Yes
To Step 7
E
F
22
1
2
SDA (HDMI_OUT)
Check the JACK204 and IC201.
No
If JACK204 or IC201 is failure,
replace JACK204 or IC201.
SCL (HDMI_OUT)
Check the JACK204 and IC201.
No
If JACK204 or IC201 is failure,
replace JACK204 or IC201.
* when connected the equipment to
IN1 (CD/SAT):
Check the JACK201 and IC200.
No
If JACK201 or IC200 is failure,
replace JACK201 or IC200.
* when connected the equipment to
IN2 (BD):
Check the JACK202 and IC200.
No
If JACK202 or IC200 is failure,
replace JACK202 or IC200.
* when connected the equipment to
IN3 (DVD):
Check the JACK203 and IC200.
No
If JACK203 or IC200 is failure,
replace JACK203 or IC200.
* when connected the equipment to
IN4 (DVR/BDR):
Check the JACK205 and IC200.
No
If JACK205 or IC200 is failure,
replace JACK205 or IC200.
HTP-071
2
3
Step 7: TMDS
IC1002 (pins 30,31,33,34,36,37,39,40)
Are there signals
(approx. 0.5 Vp-p)
IN all lines?
Yes
End
3
4
TMDS OUTPUT
Check the IC1001 or IC1002.
No
If IC1001 or IC1002 is failure,
replace IC1001 or IC1002.
4