Control Board (Cn900) - Sony XR-CA360 Service Manual

XR-CA360/CA360X
Q Q
3 7 6 3 1 5 1 5 0
• Waveforms
– MAIN Board –
1 IC1 qs (OSC2)
3.1 Vp-p
54.3 ns
2 IC1 qh (XO)
5.1 Vp-p
T E
L 1 3 9 4 2 2 9 6 5 1 3
30.5 µs
w w w
– CONTROL Board –
3 IC900 ud (OSC)
2.4 Vp-p
21.1 µs
x a o
y
. i
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8
• IC Block Diagrams
– MAIN Board –
IC400 BD3803F-FE2
22 21 20 19 18 17 16
2 VCO
1 C BUS FADER
LOGIC (0 ∼ –58,
∞
– dB)
TONE
PASS
BASS, TREBLE, MIDDLE
(–15dB ∼ +15dB, 1dB STEP)
VOLUME
(+23 ∼ –79dB, –
1dB STEP)
INPUT GAIN
(0 ∼ 15dB, 1dB STEP)
(4 STEREO INCLUDE 1 ISOLATION INPUT)
Q Q
3 7 6 3
VCC/2
1 2 3 4 5
u 1 6 3
.
20 20
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2 4
9 9 8
IC800 MM1175XFF
BUS ON
1
OUT
15 14 13 12
RESET
2
OUT
FADER FADER FADER
BATT 3
(0 ∼ –58, (0 ∼ –58, (0 ∼ –58,
∞ ∞ ∞
– dB) – dB) – dB)
CLK
4
OUT
VREF 5
TONE
PASS
DATA
6
IN/OUT
BASS, TREBLE, MIDDLE
GND 7
(–15dB ∼ +15dB, 1dB STEP)
VOLUME
∞ ∞
dB (+23 ∼ –79dB, – dB
1dB STEP)
INPUT GAIN
(0 ∼ 15dB, 1dB STEP)
MUTE MUTE
INPUT SELECTOR
1 5 1 5 0 8 9 2 4
6 7 8 9 10 11
m
c o
2
9 9
VCC
14
RESET RESET
13
SWITCH IN
BATT BUS ON
12
SWITCH IN
CLK
11
IN
BATT
10
CHECK
9 DATA IN
8 DATA OUT
9 8 2 9 9