36
CDX-5V661/5V661A/5V661D/5V661S
Adjusting Method:
1. Turn the power on.
2. Enter the PWM Duty 20% signal from the duty generator.
3. Comparing with the standard set, adjust the variable resistor so as to attain the same brightness.
4. Measure resistance value of variable resistor, and replace the variable resistor with the one having same value after the adjustment.
5. Enter the PWM Duty 100% signal from the duty generator.
6. Comparing with the standard set, adjust the variable resistor so as to attain the same brightness.
7. Measure resistance value of variable resistor, and replace the variable resistor with the one having same value after the adjustment.
8. Lighten the room (normal state).
9. Turn off the PWM Duty signal from the duty generator.
10. Comparing with the standard set, make sure that the brightness is same.
11. Repeat steps 2 through 7, if the brightness varies over LED's.
Adjusted parts: KEY Board
Circuit Diagram
Printed Wiring Board
R55
R56
R57
R58
R59
R60
R61
R62
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R31
R32
R33
R34
R35 R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46 R47
R48
KEY BOARD
(COMPONENT SIDE)
+
+
R15
R17
R18
Q5
R33
R32
R31
R36
R35
R34
R39
R38
R37
D11
D12
D13
R42
R41
R40
R45
R44
D14
D15
R48
R47
R46
R52
R51
R50
R43
R49
R82
C21
R81
R65
R77
C22
R79
D21
R20
Q4
R21
R22
Q3
R16
D22
Q6
D16
D17
D5
D6
D8
D7
D9
D10
Q11
Q12
R85
C19
C18
C17
C16
C15
C20
R19
Q19
Q16
Q17
Q18
Q20
Q15
C14
R73
R66
R67 R68
R69
R70
R71 R72
R74
R75
R55
R56
R57
R58
R62
R61
R60
R59
C23
Q21
R76
R86
Q13
R78
R80
D3
D4
R91
3.3k
3.3k
47k
2SB1132
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
LSM670
LSM670
LSM670
4.7k
4.7k
4.7k
4.7k
4.7k
LSM670
LSM670
4.7k
4.7k
4.7k
3.3k
3.3k
3.3k
4.7k
3.3k
4.7k
0.022
4.7k
3.3k
10k
0.022
10k
UDZS-10B
47k
2SC2412K
3.3k
47k
2SB1132
47k UDZS-10B
2SC2412K
LSM670
LSM670
LSM670
LSM670
LSM670
LSM670
LSM670
LSM670
2SC2412
2SC2412
10k
0.022
0.022
0.022
0.022
0.022
0.022
3.3k
DTC114EKA
DTC114EKA
DTC114EKA
DTC114EKA
DTC114EKA
DTC114EKA
0.022
3.3k
3.3k
3.3k 3.3k
3.3k
3.3k
3.3k 3.3k
3.3k
3.3k
3.3k
3.3k
3.3k
3.3k
3.3k
3.3k
3.3k
3.3k
0.022
2SC2412
3.3k
10k
2SC2412
10k
10k
LSM670
LSM670
0
IND5
IND6
IN
D
2
IN
D
3
IN
D
4
IN
D
5
IN
D
6
IND SLOT
IN
D
S
L
O
T
IN
D
1
Q5,6
REGULATOR
1
2
3
4
5
6
DISC SLOT
INDICATOR
Q15-21
LED DRIVE
6
5
4
3
2
1
LED DRIVE
LOAD
EJECT
LED DRIVE
LED DRIVE
REGULATOR
Q3,4
DIMMER B+
INDICATOR B+
+
+