1
2
36
35
34
33
32
31
30
29
28
27
26
25
13 14 15
16
17
18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37
COM
RI
VREF
POWER OUTC
POWER OUT2
VCC
POWER MUTE
POWER IN1
POWER IN2
MIX OUT1
MIX OUT2
LP.2
R. P2
R.P1
DET OUT
MVREF
IN
+
VSP
LOW BOOST IN2
LOW BOOST IN1
LOW BOOST SW
M-GND
R.VREF
PRE MUTE SW
(FWD/REW)
POWER OUT1
POWER GND
MVCC
DR
WOUT
MP-GND
VOUT
UOUT
FC
OUT
OSC
UB
VB
WB
3
4
5
6
7
8
9
10
11
12
PRE NF1
PRE OUT2
PRE NF2
PRE FWD IN2
PRE REV IN2
PRE REV IN1
PRE FWD IN1
S/S
PRE GND
PRE OUT1
BIAS
R.F
REF
SYS
CONT
DET
VREF
SPEED
LOW
BOOST
PRE DRIVER
OPERATION LOGIC
OSC
PLUSE DET
REF
VOLTAGE
REF VOLTAGE
FOR SPEED CONTROL
CURRENT
DET
OPERATION
DET
FWD/
REV
FREQ
CARC.
+
–
24 23 22 21 20 19 18 17 16 15 14 13
DECODE
DIVIDE
VCO
1110987654321 12
FM RF OUT
RF GND FM RF IN AM IF IN FM IF IN GND AGC QUAD R-OUT L-OUTAM LOW
CUT
MIX OUT VCC
RF VCC AM RF IN FM OSC AM OSC OSC OUT ST LED IF REQ DET OUT LPF1 LPF2
FM
OSC
AM
OSC
AM
MIX
FM
MIX
BUFF
BUFF
FM
RF
AMIF
FMIF
AGC
MUTE
ST/MO
FM/AM
FM
DET
AM
DET
1/8
LEVEL
DET
IF
BUFF
AF
BUFF
AF
IF
REQ
SW
ST
– 25 – – 26 –
• IC Block Diagrams
IC1 TA2104
IC301 LB8115W-TLM
SECTION 6
EXPLODED VIEWS
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories and packing materials are
given in the last of this parts list.
• Abbreviation
CND : Canadian model.
C&SA : Central and South America
model.
CH : Chinese model.
FR : French model.
CEV : Poland, Czech, Greece and
Turkey model.
EE : East European model.
9E : No indication of country of
origin.
E : Indication of country of origin.
6-1. CABINET SECTION
N
N
IC331 NJM2185V
14 13 12 11 10 9 8
4321 5 6 7
WEIGHT
G2G1V/I
BIAS
CIRCUIT
Bch BLOCK (same Ach)
VCC
ON/OFF
VEXT
INR
OUTR
DCR
DETR
GND
IREF
VREF
INL
OUTL
DCL
DETL
SUM
Gm
Ach BLOCK
ND701
1
11
2
3
4
5
12
8
9
10
6
7
13
24
14
15
16
17
18
19
20
21
22
23
17
not supplied
MF-WMFX483-147
L2
12
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