Operating instructions

8.2 PB-15L Bias Control P.C.B. Assembly
No. Description Part No. Notes
P.C.B. PB9A465A
VR1~VR3 Potentiometer RV414172 BIAS ADJ. 10 kΩ
VR4 Potentiometer RV414207 ERASE ADJ. 10 kΩ
VR5 Potentiometer RV414207 TEST SIGNAL 10 kΩ
Jack CN605062 TEST SIGNAL
C50 Capacitor C71R012M 1 µF 35V Tantalum
Heatsink KZ1A028
RL1 Relay RY4DC037 MUTE
SW1 Switch WH32003 BIAS
SW2 Switch WH32007 LOW COMP
SW3, SW4 Switch WH91023 EQ, CUE ATT.
R121 Resistor R8CJ101M 2 W 100 Ω
MTR-90III Operation and Maintenance Manual
April 1991
Section 8 Printed Circuit Board Layouts and Parts Lists
8 - 5