Pioneer MJ-L5 Service Manual page 67

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IR3R55M (MD CORE MAIN UNIT : IC101)
• RF Signal Processor
•
Block Diagram
48 47 46
RF1 1
RF2 2
DIFF
RF3 3
DIFF
RF4 4
REFI 5
REFO
6
RFADD
7
TCGI
8
AIN
9
BIN 10
EIN 11
FIN 12
13 14 15
TE
L 13942296513
•
Pin Function
No. Name
1 RF1 Inputs RF signal input terminal 1
pickup RF signal output.
2 RF2 Inputs RF signal input terminal 2
pickup RF signal output.
3 RF3 Inputs RF signal input terminal 3
pickup RF signal output.
4 RF4 Inputs RF signal input terminal 4
pickup RF signal output.
5 REFI Standard voltage amp input terminal
6 REFO Standard voltage amp output terminal
7 RFADD RF1 – 4 resistance addition output terminal
8 TCGI Track cross detection signal amp input terminal
during groove input
9 AIN Servo-use signal amp (Focus servo system)
inversion input terminal
10 BIN Servo-use signal amp (Focus servo system)
inversion input terminal
11 EIN Servo-use signal amp (Tracking servo system)
inversion input terminal
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12 FIN Servo-use signal amp (Tracking servo system)
inversion input terminal
13 BIAS Bias input terminal
.
14 AVCC Analog power terminal
∗
15 VSTBY Logic signal output terminal (outputs STBY signal
inversion signal)
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45 44 43 42 41 40 39 38
EFM
AGC
ADIP
AGC
BIAS
LPF HPF
LOGIC
16 17 18 19 20 21 22 23
Description
x ao
y
i
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8
No. Name
∗
16 XDISC
37
∗
17 XSGAIN
36 ADIPI
35 ADIPO
18 AGND
34 NC
19 DGND
33 ADLPFO
20 DTEMP
32 22KO
21 LATCH
22KI
31
22 CLOCK
WBO
30
23 DATA
TCGO
29
24 DVCC
AOUT
28
25 FOUT
27 BOUT
26 EOUT
26 EOUT
25 FOUT
27 BOUT
24
28 AOUT
Q Q
3 6 7 1 3
29 TCGO
30 WBO
31 22KI
32 22KO
33 ADLPFO ADIP signal LPF amp output terminal
∗
34 NC
35 ADIPO
36 ADIPI
37 ADAGC
38 ADAGI
39 RF2–1
40 EFMO
∗
41 EFMI
42 AVCC
43 AGND
44 EFMAGC Smoothing capacitor connection terminal for EFM signal
45 EFMAGI
∗
46 ATTR
u163
47 GOUT
.
48 POUT
Terminals denoted with an asterisk (∗) are (Open) terminals that are
not externally connected.
MJ-L5, SP-L5
2 9 9 4 2 8
Description
Logic signal output terminal (outputs DISC signal
inversion signal)
Logic signal output terminal (outputs SGAIN signal
inversion signal)
Analog part GND terminal
Digital part GND terminal
Tip temperature detection terminal
Latch signal input terminal
Clock signal input terminal
Serial data input terminal
Digital part power terminal
Servo-use signal amp (Tracking servo system) output
terminal
Servo-use signal amp (Tracking servo system) output
terminal
Servo-use signal amp (Focus servo system) output
terminal
Servo-use signal amp (Focus servo system) output
terminal
1 5 0 5 8 2 9 9 4
Track cross detection signal amp output terminal during
groove output
Comparator output terminal for ADIP signal 2-value
conversion
Comparator input terminal for ADIP signal 2-value
conversion
ADIP signal HPF amp output terminal
NC
ADIP signal preamp output terminal
ADIP signal AGC amp output terminal
Smoothing capacitor connection terminal for ADIP
signal AGC
ADIP signal AGC amp input terminal
RF1, RF2 differential signal
RF signal preamp output terminal
RF signal AGC amp output terminal
Analog part power terminal
Analog part GND terminal
AGC
m
EFM signal AGC amp input terminal
Terminal for attenuating 47, 48 pin output signal
co
Outputs RF1 + RF2 + RF3 – RF3 – RF4 signal during
groove output
RF1 – 4 resistance addition output during pit output
9 9
2 8 9 9
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