ECM-957PRO
ECM-957PRO
7
7
SECTION 3
DIAGRAMS
3-1. PRINTED WIRING BOARD
•
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
1
5
2
4
3
C3
BLK
WHT
RED
BLK
YEL
RED
R3
R5
R1
1
R10
R7 R9
R8
R2
R6
C2
C1
Q2
MIC2
(SIDE)
MIC1
(MID)
Q1
R1
R4
C6
Q4
D2
BATTERY
CHECK
POWER
/DIRECTIVE
ANGLE
S1
(POWER/DERECTIVE ANGLE)
Q3
ECB
ECB
S1
C5
-1
-2
D1
IC1
RED
BRN
WHT
BLK
BLU
RED
CN1
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION R6)
1PC,1.5V
BLK
3 2 1
C4
L1
120˚ 90˚ OFF
C7
T2
OUTPUT
TRANSFORMER
T1
OUTPUT
TRANSFORMER
RED
8
G
G
S
S
D
D
9
(CHASSIS)
17
12
11
10
14
16
2
1
4
6
5
3
13
15
GRN
YEL
BLK
BLU
WHT
BLU
RED
RED
GRN
YEL
BLK
BLU
WHT
WHT
BRN
17
BLK
S
S
(CHASSIS)
1-876-391-
(11)
11
1-876-391- (11)
11
AMP BOARD (SIDE A)
AMP
BOARD
(SIDE B)
SIDE ASSY
ROTARY FRAME ASSY
For Printed Wiring Boards.
Note:
•
X
: Parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
z
:
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
C
B
These are omitted.
E
Q
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong
viscosity
Unleaded solder is more viscous (sticky, less prone to
fl
ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Ref. No. Location
• Semiconductor
Location
D1
G-7
D2
E-7
IC1
H-7
Q1
A-7
Q2
A-6
Q3
E-7
Q4
D-7
