Pioneer DVD-A02 Servicehandleiding - Pagina 28
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DVD-102, DVD-A02
No.
Name
I/O
194
MON1
O
Mode1: RFCK
Signal indicating the cycle for one frame/line at
the time of CD/DVD
Mode2: FUNRER
"H" indicates that an overrun has occurred for
the HIU FIFO.
Mode6: SYNCCMP
Interpolated SYNC detection signal.
At the time of CD: SYNC miss,
DVD: SYNC interpolation
195
MON0
O
Mode1: EMPH
Emphasis identification signal
Mode2: FOVRER
"H" indicates that an overrun has occurred for
the HIU FIFO.
Mode6: SYNCDET
SYNC detection signal (CD/DVD)
196 HIFSEL
I
Host interface selection signal
L: IDE interface
H: General DMA interface
7.2 DISASSEMBLY
Remove the Servo Mechanism Assy
1 Shift the slide switch to short side and short-circuit the section A.
2 Remove the two flexible connectors (CN1 and CN300).
3 Remove three screws.
2
3
MAIN BOARD
ASSY CN1
CHASSIS D
28
Description
3
2
MAIN BOARD ASSY
CN300
No.
Name
I/O
197
DASP
I/O Device active and device 1 present signal for IDE
control bus
198
VDD
–
+5V Digital Power Supply
199
HCS1
I
Control Block Register select signal for Task
Register File
200
HCS0
I
Command Block Register select signal for Task
Register File
201
HDA2
I
IDE address bus input signal
202
HDA0
203
PDIAG
I/O Passed diagnostics signal output terminal to the
IDE controller bus
204
HDA1
I
IDE address bus input signal
205 HIOCS16 O
16 bit I/O output signal to the host
206 HINTRQ
O
Interrupt request signal to the host (3 states)
207 HDMACK
I
DMA response signal to the host. Indicates that a
request for a DMA transfer has been received.
208
GND
–
Digital GND
1
Slide Switch
Section A
3
Caution: Shift the slide switch of the pickup
assy to the short side, and short-
circuit the section
removing the flexible cables.
µPD72152GD
Description
Short side
A
before