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ELURA20 MC A, ELURA10 A
CAHPTER 2. TECHNICAL DESCRIPTION
2-3
2. Power Supply Circuit
2-1 Startup of Power Supply
• Lithium Battery for Backup
LI3V from the lithium battery is input at pin 3 of IC200, then output from pin 6 as power supply for the SUB MI-COM. This allows
the SUB MI-COM to provide data backup and a clock function when main power supply is not connected.
If the lithium battery voltage drops below 2.6V (or even when lithium battery is not mounted), IC200 outputs an “L” signal from
pin 2, and when power is ON, the SUB MI-COM receives the “L” signal and sends it to the MAIN MI-COM, which provides
a warning indication for the lithium battery.
• Main Power Supply
VTR UNREG from the main power supply enters pin 7 of IC200, is converted to 3V by the internal regulator, and is then output as
E3V from pin 8. The signal is also replaced with LI3V by the internal switch and then output from pin 6 as power supply to the
SUB MI-COM.
Upon receiving VTR UNREG, IC200 outputs “L” signal from pin 4. SUB MI-COM receives this and recognizes that the main
power supply is connected, then carries out initialization of the mechanisms after which it enters a standby status. In this condition,
SUB MI-COM performs detection of switches related to startup, and outputs VTR ON “H” signal from pin 48 upon detection. By
means of VTR ON signal, the recorder power supply is started up and the MAIN MI-COM is also started. If camera mode has been
selected, the MAIN MI-COM receives this signal from the SUB MI-COM and outputs CAM ON “H” signal which starts up the
camera power supply.
3
7
26
25
24
21
20
48
137
8
4
6
5
43
4
15
23
2
DET
RESET
SW
E3V
3V
E3V or LI3V
E3V DET
VCC
VTR UNREG
EJECT SW
CN13
SW0
SW1
SW2
CN14
CN1
LITHIUM
BATTERY
LI3V
FROM
BATTERY
MAIN SW0
TP204
FROM DMC II
VTR ON
PM SECTION
CAM ON
TP202
TP203
MAIN SW1
MAIN SW2
EJECT SW
CASSETTE
IN SW
VTR ON
RESET L
LI3 DET
CAM ON
SERIAL DATA
IC203
SUB MI-COM.
IC100
MAIN
MI-COM.
IC200
E 3V REG.
RESET
CN200
3V
REG.
2.6V
DET.
1
6
4
1
2
10 8
MAIN P.C.B.
FE FPC
MMC P.C.B.
LI P.C.B.
26, 27
MAIN
DIAL
MAIN DIAL
CARD PLAY
VCR
OFF
MOVIE
P.SCAN
CARD REC
SW0
H
L
L
L
H
H
SW1
H
H
H
L
L
L
SW2
L
L
H
H
H
L
CN11
15
17
25
24
3
Fig. 2-1
Summary of Contents for ELURA10 A
Page 150: ...5 16 ELURA20 MC A ELURA10 A CVF Unit Section 15 14 9 8 13 12 11 6 5 1 2 3 4 7 16 17 10 ...
Page 152: ...5 18 DMC II Mechanical Chassis Section 1 1 4 2 3 6 7 10 11 12 5 4 2 3 8 9 Slide Chassis Ass y ...
Page 158: ...5 24 DMC II Mechanical Chassis Section 4 REAR FACE 1 2 2 5 6 7 8 9 5 10 11 12 1 13 14 3 4 ...