Service manual
CD-DV999W/CD-DV777W
6 – 1
AudioCD-DV999W/CD-DV777WService ManualCD-DV999W/CD-DV777WMarketE
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Schematic diagram
Figure 6-1 SCHEMATIC DIAGRAM (1/15)
0.7V
0V
0V
0V
0.7V
0V
0V
0V
0V
0V
0V
9.3V
8.6V
9.3V
0V
3.4V
3.4V
0V
0V
0V
0.7V
0.7V
0V
0V
0V
0.7V
0.7V
50 kHZ/9 kHz
100 kHZ/10 kHz
ERASE HEAD
RECORD/
PLAYBACK HEAD
R-CH
L-CH
TAPE 2
6
5
4
3
2
1
6
5
4
3
2
1
2
1
3
5
4
6
7
1/50
1/50
180P(CH)
47/25
1K
560P
1.5K
22/50
100
0.0033
KTC3875 GR
2.2K
390
KTC3875 GR
KTC3875 GR
2.2K
8.2K
8.2K
1K
1/50
1/50
1/50
1/50
4.7/50
1/50
0.0022
0.
0
220/16
0.022
1/50
10K
1K
3
0.
0
220/10
220/10
22/25
KTC3200 GR
KTC3200 GR
KTC3200 GR
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
KTC3200 GR
KTA1504 Y
220K
22/50
22K
1/50
22K
0.0022
8.2K
0.0022
8.2K
220P
220P
220P
LC75341
AUDIO PROCESSOR
9
10
11
12 13
14
15
16
17
18
19
20
21
22
23
24
8
7
6
5
4
3
2
1
68K
47/50
150
100/16
10K
0.022
47/25
5.6K
3.3/50
5.6K
KRC104 S
1K
0.0033
0.022
0.1
0.082
3.9K
1/
5
0.082
0.1
1/50
4.7/50
1/50
56
10K
KTC3875 GR
330P
330P
1K
4.7K
10K
KTC3875 GR
330P
4.7K
0.0015
100K
3.9K
47/25
560P
47/25
0.039
15K
KRC104 S
10K
KTC3875 GR
10K
KTC3875 GR
10K
100K
3.9K
3.3K
2.2K
3.3K
2.2K
330P
15K
1.5K
0.0015
2.2K
2.2K
KTC3875 GR
KTC3875 GR
390
1/50
47K
4.7K
1K
270P
AN7345K
PLAYBACK
AND
RECORD/
PLAYBACK
AMP.
560P
47K
180P
22/50
270P
0.022
100
4.7K
0.0022
0.0022
4.7K
47/25
56
47/25
560P
0.039
543216
7
8
9101112
131415161718192021222324
330
330
REC_R
L
L
R
R
T1_R
T1_L
A_GND
TAPE 1
PLAYBACK HEAD
R-CHL-CH
1
2
3
1
2
3
LD+8V
A_5V
D+5V
DVD S5V
DVD S5V
DVD_FUNC
DVD D1.7V
DVD PROTECT
CD_GND
L-CH
A_GND
R-CH
AGC LINE
CD_D_GND
CD_A_GND
AC RLY
DVD A+5V
LD +8V
DVD S5V
DVD S5V
DVD IN
DVD A3.7V
DVD D3.7V
DVD D1.7V
DVD AGND
DVD M_GND
DVD L-CH
DVD A_GND
DVD R-CH
8
9
7
6
5
4
14
15
13
12
11
10
9
14
13
12
11
10
3
1
1
8
7
6
5
4
3
2
DVD D_GND
P6-5 1-F
TO POWER SECTION
Ð
+
Ð
+
Ð
+
Ð
+
Ð
+
Ð
+
Ð
+
Ð
+
CCB
INTERFACE
AUX
DECK
TUNER
CD
112K
56K
112K
56K
Hich=CHROME
Ð
Ð
+
+
Hich=T1
+
Ð
+
Ð
Nor/CrO2
RIPPLE
ALC
ALC
Vcc
LSEL0
R1
R2
R3
R4
RSEL0
RIN
RTRE
RBASS
ROUT
VREF
VDD
CLK
L1
L2
L3
L4
LIN
LTRE
LBASS
LOUT
VSS
CE
DI
CN3004
P6-10 12-H
TO DVD SERVO PWB
1
2
3
4
5
7
8
9
13
14
15
16
11
12
10
6
1
1
2
2
3
3
+B
+B
+B
+B
+B
+B
+B
+B
+B
SWITCHING
SWITCHING
SWITCHING
MUTING
MUTING
Q603, Q604: SYSTEM MUTE
• NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
10K
1/50
10K
1/50
T2_R2
M_GND
A_GND
ERASE
T2_R1
T2_L1
T2_L2
CNS601
BI601
CNP101
Q103
Q101
R103
R105
C103
Q105
C105
R109
R107
R111
R101
Q106
C106
R110
R108
R102
R112
Q112
R146
R665
4.7K
R148
R147
Q114
Q113
C141
R149
C639
R621
C625
R609
R612
R666
4.7K
R614
R615
R616
R617
Q604
Q603
R619
R618
Q601
Q605
KTC3875 GR
R611
Q602
Q909
R610
R613
R601
R602
C652
C651
C619
C617
C615
C613
C611
C609
R605
C605
C607
R607
C621
C623
C
6
C601
C653
C603
C608
C6
R
C606
C
C624
C620
C622
C614
C616
C618
C626
R608
R136
R137
Q107
R139
Q108
R138
R150
R116
C108
C110
R114
C112
C116
C118
R124
6.8K
C114
R118
R120
C120
R122
15K
R130
R132
C130
C150
C132
R134
C124
C128
R126
C135
C134
C133
C131
C143
R129
C129
C127
R135
R131
C123
C125
R133
R127
C121
R123
6.8K
C119
R121
15K
R117
R119
C111
R115
C117
C115
C113
C109
C107
R113
C126
R128
IC101
IC101
C640
R620
C104
C102
Q104
Q102
R106
R104
C101
IC601
R680
C670
R681
C671
SW601
SPAN SELECTOR
BI102
CNS102
DVD SIGNALFM SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
VIDEO SIGNAL
AUX SIGNAL
MIC SIGNAL
KTC3875 GR
2.2K
2.2K
Q908
R988
R987
R985
5.6K
R986
5.6K
A
B
C
D
E
F
G
H
1
23456
CD-CV777W
R121
R122
CD-CV999W
18K
5.6K
R123
R124
15K 6.8K
33K
R692
R693
39K
8.2K
R985
R986
5.6K