Service manual

SERVICE MANUAL
Table 20 Functions and Service Data of HEF4053 (DS01/02/NP02)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (K Ω ) Negative Resistance (K Ω )
1 Signal input 0 9.81 6.15
2 Signal input 0 0 0
3 Signal input 0 9.81 6.15
4 Signal output 0 6.66 6.21
5 Signal input 0 0 0
6 Ground 0 0 0
7 Ground 0 0 0
8 Ground 0 0 0
9 Control signal input 0.12 7.97 5.7
10 Control signal input 0.12 7.99 5.7
11 Control signal input 4.98 7.8 5.6
12 Signal input 0 0 0
13 Signal output 0 9.81 6.15
14 Signal input 0 6.9 6.4
15 Audio output 0 6.95 6.4
16 Supply voltage 5.09 6.89 4.44
Table 21 Functions and Service Data of TD7056B (NW01)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (20K Ω ) Negative Resistance (20K Ω )
1 Not connected 0
∞
∞
2 Positive supply voltage 16 0.4 0.4
3 Voltage input 2 7.4 33
4 Signal ground 0 0 0
5 DC volume control 0 7 9
6 Positive output 8 6 7.4
7 Power ground 0 0 0
8 Negative output 8 6 7.4
9 Not connected 0
∞
∞
Table 22 Functions and Service Data of TA75558 (NW02)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (20K Ω ) Negative Resistance (20K Ω )
1
A output 3.7 6.4 13
2
A negative input 3.7 7.5 57
3
A positive input 3.7 0.8 0.8
4
Ground 0 0 0
5
B positive input 3.7 0.8 0.8
6
B negative input 3.2 7.5 80
7
B output 3.7 5.6 6.4
8
Supply voltage 7.3 1.1 1.1
44