WhitakerAudio JC Whitaker 20 W Stereo Integrated Audio Amplifier, Manual

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20 W Stereo Integrated Audio Amplifier
3.1.2 Rectifier PWB
The rectifier PWB includes 13 quick-disconnect terminal posts, The wire connection codes for
this board are given in Table 3.2.
The overall component layout of the rectifier PWB is shown in Figure 3.2.
Table 3.2 Rectifier PWB Connection Wiring Codes
(Note that the color codes for the transformers listed in this table may vary. Consult device
documentation before proceeding.)
PWB
Code Function Connection
Color Code Notes
6VH1 6 V ac heater connection Green Connects to green lead from T51
6VH1 6 V ac heater connection Green Connects to 6VH1 post on Amplifier PWB #2
(left)
6VH2 6 V ac heater connection Green Connects to green lead from T51
6VH2 6 V ac heater connection Brown Connects to 6VH2 post on Amplifier PWB #2
(left)
6VHct 6 V ac heater center-tap Green/yellow Connects to green/yellow lead from T51
400V Plate voltage input Red Connects to red lead from T51
400V Plate voltage input Red Connects to red lead from T51
T51ct Center tap of plate secondary
winding
Red/yellow Connects to red/yellow lead from T51
GND Ground Black To terminal 2 on TB4 on Amplifier PWB #2
(left)
B+ Rectified B+ Black To black lead of choke L51
BIAS Rectified bias supply White To BIAS terminal on Amplifier PWB #2 (left)
GND Ground Black Connects to main chassis ground point
50V 50 V ac bias tap Violet Connects to violet lead from T51