– 19 –
– 20 –
5-4. BLOCK DIAGRAM — MAIN SECTION —
PHC-ZW770L
M
23
78
67
17 18 19 20
21
68
2
4
31
32
29
30
66
38–41
76
12
3
CD L-CH
S301-1
REC
PB
R-CH
1
32
19
29
30
10
7
28
27
14
15
12
20
A-L
B-L
BIAS
BIAS
TR-C
BIAS
TR-B
TU-L
AGC-T
CD-L
REC EQ
BIAS
OSC
LOGIC
MIC/HS
A/B
NOR/HI
FUNCTION
OUT-L
OUT-R
REC/PB
PRE AMP
IC301
RV301
TAPE
SPEED
Q306
M301
(CAPSTAN/REEL)
A
B
–
+
ISS1
Q318
ISS3
Q319
Q316
Q307
Q304
T301
BIAS
OSC
Q317
MD
POWER
DETECTOR
Q340
R-CH
R-CH
R-CH
L-CH
HRP301
RECORD/
PLAYBACK
HEAD
(DECK B)
L-CH
R-CH
HP301
PLAYBACK
HEAD
(DECK A)
1
CD SECTION
R-CNT/ST-MO
2
CD SECTION
S304
(MD POWER)
DECK A
S307
(MD POWER)
DECK B
9V
9V
S301-3
REC
PB
REC
79 C-DOR
COM0
ROCK
POP
JAZZ
CLUB
MANUAL
COM3
42–64
73•74
SEG0
SEG22
R-LATCH
R-CLK
LCD801
LED
SWITCH
Q807
5 BAND
GRAPHIC
EQUALIZER
D806-809
TUNER
TUNER
POWER AMP
IC304
Q101
Q323
17
2
1
22
21
20
13
4
GRAPHIC
EQUALIZER
CONTROLLER
VOLUME/SOUND CONTROL
IC302
IC803
5 BAND PROCESSOR
IN2
OUT2
100
400
1K
4K
10K
VOL
SP901
SPEAKER
(L-CH)
R-CH
R-CH
J301
PHONES
Q301
Q302
Q305
Q303
S306
(MD PLAY)
DECK B
S801
CD DOOR
OPEN/CLOSE
22
S305
(MD PLAY)
DECK A
16
DUB
14
RADIO
3
CD
69
V-DATA/R-DATA
71
V-CLOCK
70
V-LATCH
15
TAPE
TC2
TC1
TUNER
TAPE
CD
X802
32.768KHz
X801
4.19MHz
CLOCK
SHIFT
Q801
CLOCK
SHIFT
Q802
RESET
IC802
B/UP +5V
REM +B
RST
B-MUTE
2
SIRCS
RECEIVER
IC811
RMC
13
PCON
80
REGCK
INT/SFT-CLK
28
VERSION
XTAL
EXCEPT EE
24
KEY1
25
KEY2
26
KEY3
27
KEY4
EXTL
TXE
TX
BL-CONT
77
A-MUTE
LAMP ON
SWITCH
Q334, 335
CD 5V
SWITCH
Q313, 314
TUNER 6V
SWITCH
Q311, 312
PL801–803
CD 5V
CD
TUNER
6V
TUNER
CE
CK
19
12 13
21
20
8
5
10
13
14
17
19
20
21
24
22
4
6
16
15
11
12
10
2
LP-OUT
AM-IN
FM-IN
6 7
LW
MW
X-OUT
ST-IND
X-IN
IF-IN
MO/ST
BAND
X1
75KHz
14
9
18
11
AM
OSC
FM
OSC
AM
MIX
FM
MIX
AM
RF-IN
AM
OSC
MIX
OUT
FM
OSC
FM
RF-IN
FM
RF-
OUT
IF
BUFFER
LPF1/
MO/ST
LPF2/BAND
AM
DET
7
FM
DET
AF
BUFFER
FM
MPX
MUTE
R-CH
QUAD
R-OUT
MPX-
IN
DET-
OUT
L-OUT
CF3
CF2
CF1
CF4
AM CERAMIC
FILTER
T1
IF
TRANSFORMER
AM
IF-IN
FM
IF-IN
D1
D2
CT1
L1
FM-RF
L2
FM-OSC
CT3
-2
LW
-1
MW
CT5
L3
MW/LW
FERRITE-ROD
ANTENNA
04
BPF
FL1
MW SW
Q40-42
LW SW
Q2,43,44
REG
Q61
ANT1
FM
TELESCOPIC
ANTENNA
D3
L4
MW/LW-OSC
FM/MW/LW
FRONT-END,
IF DET, FM STEREO
DEMODULATOR
IC1
SYSTEM CONTROL
IC801 (2/2)
PLL
IC2
S301-4
HIGH
NORMAL
3
1
OSC-
OUT
• Signal path
: FM
: AM
: PLAY (DECK A)
: PLAY (DECK B)
: REC (DECK B)
: CD
• R-ch : same as L-ch.
• Abbreviation
EE : East European model
SP : Singapore model
1
3
S301
ISS
3 2 1
9V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
IF-OUT
ST-IND
3
DI
DO
LED
SWITCH
Q808-810
DUBBING
SWITCH
Q308-310
1KHz BAND
DETECTOR
Q315
5 BAND GRAPHIC EQUALIZER
RV401-405
MEGA BASS
DETECTOR
Q321, 322
S303
HIGH-SPEED
DUBBING
D906
D907
D908
D321
BACK UP
SWITCH
Q320, 324, 325,
327-329
POWER
SWITCH
Q338, 339
6V REG
(FOR AUDIO)
Q331
6.2V REG
(FOR CD)
Q333
REG. CHECK &
REM+B SWITCH
Q336, 337
J901
~ AC IN
D814
OPR/BATT
D810
MANUAL
T901
POWER
TRANSFORMER
2
3
IC305
BACK UP 5V IC
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
(BACK UP)
DRY BATTERY SIZE "D"
(IEC DESIGNATION R20)
6PCS, 9V (POWER)
REM+B
B/UP
+5V
9V
VT 9V
CD 6.2V
R367
9V
6V
7.5V REG
(FOR B/L)
Q332
RECT
D905, 909-911
RECT
D901-904
5V REG
(FOR CD/TUNER)
Q330
TUNER 5V
9V
R901
F901
5A 125V (SP)
3.15A 250V (EXCEPT SP)
D811–813
6V
S824-827
S816-823
S808-815
S803-807
12
11
10
9
6
4
3
2
5
A06/10KHz
DATA
CLK
LAT
A05/4KHz
A04/1KHz
A03/400Hz
A02/100Hz
A01/VR
EQ10K
EQ4K
EQ1K
EQ400
EQ100
6V
6V
VT9V
BAND
IF REQ
Q13
L2
FM
FREQUENCY
COVERAGE
CT3, L3-1
MW
TRACKING
CT5, L3-2
LW
TRACKING
L4
LW
FREQUENCY
COVERAGE
CT1, L1
FM
TRACKING
EXCEPT EE
