– 23 –
– 24 –
5-5. BLOCK DIAGRAM — POWER SUPPLY SECTION —
D-VJ85
SWITCHING
POWER
CIRCUIT
SWITCHING
POWER
CIRCUIT
DET
COMP
CHARGE
CONTROL
REG SW
Q406, 409, 410
OSC
T401
MEMORY
REG
Q602
INVERTER
Q603
CHARGE
SW
INTERFACE
CLK
OSC
CHARGE
SW
Q403, 404
DC IN
SW
Q408
REG SW
Q401, 405
D416
71
61
58
51
7
8
9
10
11
73
65
60
59
46
48
49
5
45
CHAREE
ON/OFF
VCC1
1
5
15
8
SYSTEM CONTROL
IC801
17
20
VREF
VREF
52
RESET
VCDON O
46
XPOWLT
CHGMNT1
VCC2 ON
BATMNT
DC IN MNT
DC IN
VCC1
AVDD
DVDD
D
E
G
F
VCPU
2.0V
4
2
IC405
VC
Q402
DVDD
M VCC
Q901, 902
VCC2
CVCD
POWER CONTROL
IC401
VCC2
B+
BM1
B1
Q407
C
H
04
SWITCH
Q412,413
J401
DC IN 4.5V
!
RECHARGEABLE
BATTERY
(Page17)
(Page18)
(Page18)
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(Page17)
For schematic diagrams
• 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.
•
%
: indicates tolerance.
•
C
: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
•
A
: B+ Line.
• Power voltage is dc 4.5V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground in
playback mode.
no mark : VIDEO CD PLAY
(
) : AUDIO CD PLAY
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• 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.
J
: CD (ANALOG OUT)
c
: CD (OPTICAL OUT)
L
: VIDEO
For printed wiring boards
•
Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
VIDEO TEST DISC: HLV-401 (TGIS-3)
Part No.: J-6095-031-A
Playback track No.: 34 (Full field color bar 75%)
