Sony MDX-C8970 Service Manual page 59

• SERVO BOARD IC501 CXP84340-216Q (MD MECHANISM CONTROLLER)
Pin No. Pin Name
1 to 5 TIN3 to TIN7
6 LOAD
7 EJECT
8, 9 NCO
10 MDMON
11 E-SW
12 AG-OK
13 ADJ-OK
14 to 17 NCO
18 DFCTSEL
19 DPLLSEL
20 EMPHSEL
21 LOCK
22 NCO
23 2M/4M
24, 25 NCO
26
MNT0
27 MNT1
28 MNT2
29 MNT3
30 RESET
31 EXTAL
32 XTAL
33 VSS
34 TX
35 TEX
36 AVSS
37 AVREF
38 INIT
39 TEMP
40 ACNT
41 DO-SEL
42 EE-CS
43 EE-CKO
44 EE-SIO
45 MD-SO
I/O
I/O
Input of the 4×8 matrix test keys ("L" is always output, except in test mode)
O Loading motor control signal output to the loading motor drive (IC305) "H" active *1
O Loading motor control signal output to the loading motor drive (IC305) "H" active *1
O
Not used (open)
Power supply on/off control signal output of the MD mechanism deck section main power supply
O
and loading motor drive (IC305) power supply "H": power on
Inputs the disc loading completion detect switch detection signal
I
"L": When completed of the disc loading operation
O
Output of aging status in test mode "L": under aging, "H": aging completed Not used (open)
Output of status when aging completed in test mode "L": aging NG, "H": aging OK
O
Not used (open)
O
Not used (open)
Select whether defect function is used for the CXD2652AR (IC301)
I
"L": used this function , "H": not used this function (fixed at "H" in this set)
Select whether digital PLL function is used for the CXD2652AR (IC301)
I
"L": used this function , "H": not used this function (fixed at "H" in this set)
Select whether emphasis signal output from pin or unilink data
I
"L": outputs from both pin and unilink data, "H": output from pin only (fixed at "H" in this set)
Mini-disc lock detection signal output to the liquid crystal display driver (IC701) "H": lock
O
CLV lock status input in test mode
O
Not used (open)
Select whether D-RAM capacitance 2M bit or 4M bit "L": 4M bit (external D-RAM) , "H": 2M
I
bit (internal D-RAM of CXD2652AR) (fixed at "L" in this set)
O
Not used (open)
Focus OK signal input from the CXD2652AR (IC301)
I
"H" is input when focus is on ("L": NG)
I
Track jump detection signal input from the CXD2652AR (IC301)
I
Busy monitor signal input from the CXD2652AR (IC301)
I Spindle servo lock status monitor signal input from the CXD2652AR (IC301)
System reset signal input from the master controller (IC500), reset signal generator (IC506) and
I
reset switch (S703) "L": reset For several hundreds msec. after the power supply rises, "L" is
input, then it changes to "H"
O Main system clock output terminal (10 MHz)
I Main system clock input terminal (10 MHz)
— Ground terminal
O Sub system clock output terminal (32.768 kHz) Not used (open)
I Sub system clock input terminal (32.768 kHz) Not used (fixed at "L")
— Ground terminal (for A/D converter)
I Reference voltage input terminal (+5V) (for A/D converter)
I Initial reset signal input terminal (A/D input) (fixed at "H")
I Temperature sensor (TH501) input terminal (A/D input)
Select the number of load/eject aging times (A/D input)
I
0H – 54H (30 times), 55H – OA9H (20 times), OAAH – OFFH (10 times) (fixed at "L")
I Select the digital output bits (A/D input)
O Chip select signal output to the external EEPROM device Not used (open)
O Serial data transfer clock signal output to the external EEPROM device Not used (open)
I/O
Two way data bus with the external EEPROM device Not used (open)
O
Writing serial data signal output to the CXD2652AR (IC301) and CXA2523AR (IC302)
Description
Not used (open)
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