Pioneer Elite N-30, Руководство по обслуживанию

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N-50
1 2 3 4
A
B
C
D
E
F
1 2 3 4
5.3 HOW TO CHECK THE IC COMMUNICATION
5.4 IC INFORMATION
The communications status with each LSI can be checked as follows:

Communications of MainCPU

SubCPU

Communications of SubCPU

DSP (N-50, N-50-K/-S only)
In the event of DSP communications error, ”Error 9” is displayed on the LCD.
If “Error 9” is not displayed, the communications have been established.

Communications of SubCPU

DIR
Select DigitalIn1, and when the sound input to DigitalIn1 is output from Opt or Coax, the communications have been
established.
The Major IC (MainCPU, SubCPU, DSP, DIR, DAC, etc.) communications checking method
In about one minute after the Power ON, the function screen appears. If the display is switched by change-over of
functions, there is no problem in the communications.
J040-22601-001-0S
(POWER SWITCH)
Block Diagram
Pin Layout
3 FB
4 I
LIM
1 GND
5
Vstr
Vref
Gate
driver
LEB
250ns
Soft-
Start
8V/12V
OSC
S
R
Q
Q
PWM
2.5 R
Normal
Burst
R
LPF
TSD
V
SD
V
OVP
V
CC
V
CC
V
CC
I
FB
I
delay
V
BURL
/V
BURH
2
V
CC
Vcc
V
OCP
V
CC
good
7 6 8
Drain
S
R
Q
Q
V
CC
good
1 GND
2 V
CC
3 FB
4 I
LIM
8 Drain
7 Drain
6 Drain
5 V
STR
Pin No. Pin Name Description
1 GND Ground
2 V
CC
Power Supply
3 FB Feedback
4 I
LIM
Peak Current Limit
5 V
STR
Startup
6,7,8 Drain SenseFET Drain
Pin Definitions