Sony CDX-5V661A - Page 36

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
R33R32R31R36R35R34R39R38R37
D11D12D13
R42R41R40R45R44
D14D15
R48R47R46R52R51R50 R43R49
R82
C21R81
R65
R77 C22R79
D21
R20
Q4
R21
R22
Q3
R16 D22
Q6
D16D17
D5
D6D8
D7D9
D10
Q11 Q12
R85
C19 C18 C17 C16 C15C20
R19
Q19 Q16Q17Q18Q20 Q15
C14
R73R66 R67 R68 R69 R70 R71 R72 R74 R75R55 R56 R57 R58R62R61R60R59
C23
Q21
R76
R86
Q13
R78R80
D3D4
R91
3.3k
3.3k
47k
2SB1132
4.7k4.7k4.7k4.7k4.7k4.7k4.7k4.7k4.7k
LSM670LSM670LSM670
4.7k4.7k4.7k4.7k4.7k
LSM670LSM670
4.7k4.7k4.7k3.3k3.3k3.3k 4.7k3.3k
4.7k
0.0224.7k
3.3k
10k 0.02210k
UDZS-10B
47k
2SC2412K
3.3k
47k
2SB1132
47k UDZS-10B
2SC2412K
LSM670LSM670
LSM670
LSM670LSM670
LSM670LSM670
LSM670
2SC2412 2SC2412
10k
0.022 0.022 0.022 0.022 0.0220.022
3.3k
DTC114EKA DTC114EKADTC114EKADTC114EKADTC114EKA DTC114EKA
0.022
3.3k3.3k 3.3k 3.3k 3.3k 3.3k 3.3k 3.3k 3.3k 3.3k3.3k 3.3k 3.3k 3.3k3.3k3.3k3.3k3.3k
0.022
2SC2412
3.3k
10k
2SC2412
10k10k
LSM670LSM670
0
IND5
IND6
IND2
IND3
IND4
IND5
IND6
IND SLOT
IND SLOT
IND1
Q5,6
REGULATOR
123456
DISC SLOT
INDICATOR
Q15-21
LED DRIVE
6
5
4
3
2
1
LED DRIVE
LOADEJECT
LED DRIVELED DRIVE
REGULATOR
Q3,4
DIMMER B+
INDICATOR B+
+
+