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FM ANT Z20 Q1 1 MIXER RF AMP 5 Q3 OSC Q4 BUFFER Q2 7 CF1 Q1,Q2 FM IF AMP CF2
AM ANT
Z1 (FM) +B Q105(Q205) MUTING SWITCH TMUTE
AM ANT COIL
AM OSC COIL
IC1 LA1833NMNTLM
3
4
6 +B (FM)
8
FM/AM IF AMP, DET/AM OSC, MIX/FM MPX
RCH +
24
23
22
21
20
19
18
17
16
15
14
13
ALC BUFFER
AM OSC
AM MIX
AM RF AMP PHASE DET
DECODER PILOT CANCEL STEREO SWITCH
AGC LEVEL DET FM IF S-CURVE AM/FM IF BUFFER AM IF COMP AM DET
FM DET
VCO TUNING DRIVE FF FF FF PILOT DET
REG
SD ST
REG
1
2
3
4
5
6
7
8
9 +B
10
11
12
X2 Z2 AM IFT ST/DO SD
16
PHASE DETECTOR CHARGE PUMP
REFERENCE DIVIDER
1 X103 20
17
UNLOCK DETECTOR
SWALLOW COUNTER 1/6,1/17,4 BITS
1 2
14 12 13
18
11
12 BITS PROGRAMMABLE DIVIDER
DO UNIVERSAL COUNTER SHIFT REGISTER LATCH C2B I/F CE DI CL
5 2 3 4
ST/DO CE DI CL
+B
15
POWER ON RESET
19
10
7
12
6
9
8
Q6 +B POWER SUPPLY CONTROL
+B (FM)
IC2 LC72131MDTRM
PLL FREQUENCY SYNTHESIZER
E
-B
TMUTE
LOADING Q306 STAT SWITCH Q307 SUBQ SWITCH
ST/DO Q308 BLKCK SWITCH /CDRST S702 +B SD D601~D604
SQCK D610 D611 Q311 +B SWITCH Q601, Q602 SWITCH +B
Q603, Q608~Q610 SWITCH A 20
SQCK
D614~D616 21
SD
24
RESTSW
25
CDRST
23
BLKCK
15
PLL_DO/ST
22
SUBQ
26
STAT
43
CD CLOSE
44
CD_OPEN
11
TMUTE
50
CDOPN_SW
8,16,19,30 LED1~LED3, DIMMER
CE/MLD DI/MDATA
12 14
MLD/PLLCE MDATA/PLLDA
M38258MCM088 IC601
MICROPROCESSOR
CL/MCLK
13
MCLK/PLLCK
VT
-B
FILTER Q1102(Q1202) R/P HEAD (L ch) MUTING SWITCH
IC1001 AN7326K
FILTER +
+B
P/B REC AMP
22(1) PB LIN(R)
21(2) PB L NF(R)
20(3) PB L EQ(R)
19(4) PB LOUT(R)
18 ALC LOW CUT
17 TPS GAIN
16 REC LIN(R)
15 REC L OUT(R)
14 ALC
13 NOR/CRO SW
12 VCC
10 RF RIPPLE REJECTION
Q1301 DECK MUTING CONTROL
LOGIC TPS ALC SWITCHING TPS OUT PB/REC SW 9
MUTE
REC AMP (L)
6
IC1000 BA7755A
ANALOG SWITCH
2 3
Q1321, Q1322 SWITCH
4
+B
Q1304 SWITCH Q1303 SWITCH
Q1308 SWITCH
Q1317 BEAT PROOF LEVEL SWITCH Q1309, Q1310, Q1312 BIAS OSC CONTROL
ERASE HEAD
L1301
+B
IC971 0N2180RLC
PHOTO INTERRUPTER
S974 (RECINH_R)
S975 (RECINH_L)
Q1313 SWITCH
Z971 INTERFACE Q1305 SWITCH Q1306,Q1307 SWITCH
28 BP
34 CR02
4 MK_IN2
3 MK_IN1
S976 (METAL)
S971 (MODE)
S972 (HALF)
S973 (CR02)
29 RECH
27 DMT
M38258MCM088 IC601
MICROPROCESSOR
XCOUT
V_JOG
XOUT
MBP2
MBP1
5
42
41
39
38
37
36
VR801 JOG VOL OSCILLATOR Q604,Q605
X602 X601
XCIN
XIN
CD SIGNAL FILTER
1 (20)
BVOL(R)
2 (19)
BINL(R)
3 (18)
BVNL(R)
4 (17)
SO L(R)
5 (16)
SNF L(R)
6 (15)
SIN L(R)
7 (14)
BUOUT L(R)
8 (13)
NF L(R)
9 (12)
IN L(R)
10
FILTER
Q103(Q203) 38(23) OUTL(R) AMPLIFIER
JK301 AUX IN
9(12) INLC(R)
Q102(Q202) Q104(Q204) SWITCH
IC303 BH3857AFV-E2
Q1315 PORT 3 28 SWITCH SOLENOID
Q305 SWITCH 26 INLD(R)
ASP
D971
Q1314,Q1316
XCOUT PORT2
SWITCH
29
PORT4
SCK SI SI
Q101 (Q201) MUTING SWITCH
M MOTOR
34
32
33
40(21)
39(22)
XCIN
27
D307,D308
Q301 AMPLIFIER
A Q504 D306 MUTING SWITCH
IC702
5 EDATA
BR93LC46FE2
EEPROM
ECLK 4 51 ECS ECLK ECS 3 47
ASP_CLK
49
ASP_LATCH
48 ASP_DATA/EDATA
52
33 MUTEA
M38258MCM088 IC601
MICROPROCESSOR
94~97
53~90
35 Q606 POWER RESET SWITCH
18 Z601
FL DISPLAY Z602
RMT_IN
RESET
SEG37
COM3
COM0
SEG0
SIGNAL LINES
MAIN SIGNAL LINE FM OSC SIGNAL LINE FM SIGNAL LINE ( ) indicates Pin No. Right Channel.
CD SIGNAL LINE AM OSC SIGNAL LINE AUX SIGNAL LINE
AM SIGNAL LINE FM & AM SIGNALS LINE
PLAYBACK SIGNAL LINE RECORDING SIGNAL LINE
IC502 AN7135
POWER AMP
11(8) + 2(5) 1(6) + + 12(7) + JK502 HEADPHONES
Q514 SWITCH 3
RIPPLE FILTER/ STABILIZER
10 D523 FP510 +B
+
Q510 D521 D522 STABILIZER +B JK503 HIGH CH SPEAKER
-
IC501
2 IN1 OUTPUT PIN TO VCC SHORT PROTECTOR INVERTING OUT 2(1) 7 + IN2 + PREDRIVER POWER AMP LOAD SHORT PROTECTOR NONINVERTING OUT 2(1) JK504 SPEAKER LCH 14(15)
LA4705NA
POWER IC
12(17)
Q511 SWITCH
+
-
3 +
RIPPLE FILTER
RIPPLE FILTER
OUTPUT PIN TO GND SHORT PROTECTOR
Q506 SWITCH NONINVERTING OUT 2(1) Q507 11 CURRENT LIMITTER Q508 CURRENT LIMITTER +B
BIAS CIRCUIT Q512 POWER CONTROL SWITCH 5 STANDBY SWITCH STANDBY SWITCH
OVER VOLTAGE/ SURGE PROTECTION
THERMAL SHUTDOWN
6 +
POP NOISE
POP NOISE PREVENTION CIRCUIT
Q509 REGULATOR +B
Q505 SWITCH
Q503 +B CURRENT SWITCH
Q502 REGULATOR
D512
D506~D509
T1 POWER TRANSFORMER
IC301 S81333HG-Z REGULATOR
KEY SW Q312 SWITCH Q313 POWER CONTROL SWITCH +B Q501 D505 SWITCH 9,10
KEY2 KEY1
Q303,Q304 SWITCH +B
Q309 D524 REGULATOR
RL501
31 PCONT2
32 PCNT
T2 D513~D516 D501~D504 SUB TRANSFORMER JK501 AC INLET F1
M38258MCM088 IC601
MICROPROCESSOR
SYNC/HALT 17 D510