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 MΩ).
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
EB
— 23 — — 24 —
RESET
IC101
11
10
X101
5MHz
15
16
65
67
72
54
70
69
CD-PLAY
D224-230
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 omitte
EB
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
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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