TCM-400DV
10 10
5-4. PRINTED WIRING BOARD - LED BOARD -
• See page 12 for Circuit Boards Location.
LED BOARD
11
(11)
1-682-640-
MIC901
FLAT
MIC
S901
V·O·R
RV603
SPEED CONTROL
S902
REC TIME
SP901
SPEAKER
H
R
L
R
OFF
DOUBLE
R
NORMAL
REC
BATT E
CN902
D902
D901
D903
A
MAIN BOARD
CN901
122
2
3 4
A
1
B
C
IC301 MM1251BFBE
5-5. IC BLOCK DIAGRAMS
IC501 NJM2072M (TE2)
IC601 LB1979VS-TLM
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
181920
SOFT
SW
MIX
CURRENT/MOTIVE
LOGIC
WAVEFORM
DETECT
PRE
DRIVER
OUTPUT
CURRENT DETECT
SPEED
DETECT
REFERENCE VOLTAGE
FOR SPEED CONTROL
POWER SUPPLY
BIAS
REFERENCE
VOLTAGE
OSCILLATOR
CIRCUIT
MOTIVE POWER
DETECT
+
–
FC GND
FC
RI
OUT
VSP
IN+
VREF
S/S
COM
OSC
WB
VCC
NC
U OUT
V OUT
W OUT
P-GND
VB
UB
GND
BOOSTER
CIRCUIT
NC
CT
GND
OUT
NC
VCC
VS
HYS
21 3 4
678 5
+
–
+
–
1
2
3
4
8
7
6
5
GND
AMP OUT
GAIN CONT
INPUT
VCC
OUTPUT2
OUTPUT1
RECOVERY
TIME CAP
Note on 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.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply frombattery terminal .
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : PLAY
( ) : REC
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
Note:
• X : parts extracted from the component side.
• a : Through hole.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen
(Side B) from the pattern face are indicated.
Pattern face side: Parts on the parts face side seen
(Side A) from the parts face are indicated.
• Signal path.
E : PB
a : REC
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
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