HTC-V5550
— POWER SECTION —
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
p
: parts mounted on the conductor side.
•
®
: Through hole.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Abbreviation
HK
: Hong Kong
SP
: Singapore
MY
: Malaysia
CH
: Chinese
TH
: Thai
IA
: Indonesia
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD (AUDIO)
L
: CD (VIDEO)
c
: DIGITAL OUT
• Indication of transistor
Q
C
These are omitted
E
B
— 23 —
— 24 —
RESET
IC101
11
10
X101
5MHz
15
16
65
67
72
54
70
69
CD-PLAY
DISC1
DISC2
DISC3
EXIST1
EXIST2
EXIST3
LED
ON/OFF
SWITCH
Q214-223
57
XRST
46 CD-POWER
55
56
IIC DATA
IIC CLK
RESET
X1
X2
MASTER CONTROL
IC101
DECO1
DECO2
CD-PAUSE
CD-L
CD-POWER
IIC-DATA
IIC-CLK
RESET
PB L
REC L
52
(Page 20)
(Page 19)
(Page 20)
(Page 19)
KEY
MATRIX
53
• R CH: Same as L ch
• SIGNAL PATH
: CD
: PB
: REC
68
66
LED1
LED2
LED3
LED4
LED5
LED6
2
3
4
5
7
KEY B
KEY A
30
29
6
D201-206
LED
ON/OFF
SWITCH
Q201-206
+7.5V REG
Q852
+12V REG
IC851
3
1
+5V SW
Q102-104
-7.5V REG
Q855
+5V REG
IC854
3
1
+
-
+7V REG
IC853
3
A+7.5V
D+5V
A+5V
M12V
+5V
M+7V
A-7.5V
1
17
13
(CD R)
R CH
(PB R)
R CH
(REC R)
R CH
CNB108
2
3
9
7
6
4
14
16
RECT
D901-904
SYSTEM
CONTROL
+5V REG
IC852
3
1
J
D
F
E
(Page 22)
G
(Page 22)
H
Note:
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Note:
C
These are omitted
E
B
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
