4 13 0 RobRobinette.com From the Marshall JCM2000 1 Board 127 Numbers Top_Left One_Side Letters TwoPoints 120/240V Primary DEFAULT 48 4 8 1 64 70.0 130.0 65 95.0 130.0 64 70.0 250.0 65 95.0 250.0 97 48 13 74 1 64 95.0 130.0 67 105.0 130.0 105.0 140.0 95.0 140.0 67 105.0 140.0 105.0 150.0 95.0 150.0 67 105.0 150.0 105.0 160.0 95.0 160.0 67 105.0 160.0 105.0 170.0 95.0 170.0 67 105.0 170.0 105.0 180.0 95.0 180.0 67 105.0 180.0 105.0 190.0 95.0 190.0 67 105.0 190.0 105.0 200.0 95.0 200.0 67 105.0 200.0 105.0 210.0 95.0 210.0 67 105.0 210.0 105.0 220.0 95.0 220.0 67 105.0 220.0 105.0 230.0 95.0 230.0 67 105.0 230.0 105.0 240.0 95.0 240.0 67 105.0 240.0 105.0 250.0 95.0 250.0 97 6.3V Secondary _180 48 4 8 1 64 150.0 250.0 65 125.0 250.0 64 150.0 130.0 65 125.0 130.0 97 48 13 74 1 64 125.0 250.0 67 115.0 250.0 115.0 240.0 125.0 240.0 67 115.0 240.0 115.0 230.0 125.0 230.0 67 115.0 230.0 115.0 220.0 125.0 220.0 67 115.0 220.0 115.0 210.0 125.0 210.0 67 115.0 210.0 115.0 200.0 125.0 200.0 67 115.0 200.0 115.0 190.0 125.0 190.0 67 115.0 190.0 115.0 180.0 125.0 180.0 67 115.0 180.0 115.0 170.0 125.0 170.0 67 115.0 170.0 115.0 160.0 125.0 160.0 67 115.0 160.0 115.0 150.0 125.0 150.0 67 115.0 150.0 115.0 140.0 125.0 140.0 67 115.0 140.0 115.0 130.0 125.0 130.0 97 C1 127 BOTH false Directional false false ABOVE _63V true C2 127 BOTH false Directional false false ABOVE _63V true C3 127 BOTH false Directional false false ABOVE _63V true C4 127 NAME false Directional false false ABOVE _63V true C5 127 NAME false Directional false false ABOVE _63V true R1 127 BOTH false Directional false false ABOVE HALF R2 127 BOTH false Directional false false BELOW HALF T1 LN2 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN2 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false GND1 DEFAULT DEFAULT LN2 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN2 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false GND1 DEFAULT DEFAULT LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false R3 3W 127 BOTH false Directional false false ABOVE HALF R4 3W 127 BOTH false Directional false false ABOVE HALF C1 127 NAME false Directional false false _63V true false false C2 127 NAME false Directional false false _63V true false false C3 127 NAME false Directional false false _63V true false false C4 127 NAME false Directional false false _63V true false false R4 127 BOTH false Directional false false HALF _5_BAND Standard R3 127 BOTH false Directional false false HALF _5_BAND Standard Bridge 100 512-GBU4M 4A Bridge Rectifier DEFAULT + ~ ~ - NAME InLine Directional 6.3V Transformer 100 6.3V DEFAULT NAME false false W1 127 FOUR true -1 _22 false false W2 127 THREE true -1 _22 false W2 127 THREE true -1 _22 false W2 127 THREE true -1 _22 false W2 127 THREE true -1 _22 false W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false GND1 DEFAULT DEFAULT W2 127 FOUR true -1 _22 false D1 127 NAME false Directional false false ABOVE 1N4007 D2 127 NAME false Directional false false ABOVE 1N4007 D3 127 NAME false Directional false false ABOVE 1N4007 D4 127 NAME false Directional false false ABOVE 1N4007 LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false W2 127 THREE true -1 _22 false W2 127 THREE true -1 _22 false W2 127 THREE true -1 _22 false L1 Note C5 Polarity + To Ground false CENTER CENTER DEFAULT L1 + 3.15VDC false CENTER CENTER DEFAULT L1 - 3.15VDC false CENTER CENTER DEFAULT L1 6.3VDC Out false CENTER CENTER DEFAULT L1 To DC Heater Pins false CENTER CENTER DEFAULT L1 Ground Reference false CENTER CENTER DEFAULT L1 Bridge Rectifier false CENTER CENTER DEFAULT L1 Filter Caps false CENTER CENTER _270 L1 6.3V Transformer false CENTER CENTER DEFAULT L1 6.3VAC false CENTER CENTER _270 L1 Voltage Dropping Resistors false CENTER CENTER DEFAULT L1 6.3V AC & DC Heater Power Supply false CENTER CENTER DEFAULT L1 By RobRobinette.com V1.8a false RIGHT CENTER DEFAULT L1 Voltage Splitter false CENTER CENTER DEFAULT L1 10V false CENTER CENTER _270 L1 10V false CENTER CENTER _270 L1 10V false CENTER CENTER _270 L1 3300uF false CENTER BOTTOM _270 L1 To DC Heater Pins false CENTER CENTER DEFAULT L1 All Caps Are 3300uF 10V Radial false CENTER CENTER DEFAULT L1 1/2 Watt false CENTER CENTER DEFAULT L1 + false CENTER CENTER DEFAULT L1 - false CENTER CENTER DEFAULT W1 127 FOUR true -1 _22 false false W2 127 FOUR true -1 _22 false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false L1 To AC Heater Pins false CENTER CENTER DEFAULT W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false Dot1 Dot1 LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false L1 3W false CENTER CENTER DEFAULT L1 3W false CENTER CENTER DEFAULT L1 + false CENTER CENTER DEFAULT L1 6.3VDC Out false CENTER CENTER DEFAULT L1 6.3VAC Out false CENTER CENTER DEFAULT L1 Or 6.3V PT Secondary false CENTER CENTER DEFAULT L1 Or 6.3V PT Secondary false CENTER CENTER DEFAULT L1 3300uF false CENTER BOTTOM _270 L1 10V false CENTER BOTTOM _270 L1 10V false CENTER BOTTOM _270 L1 6.3VAC Out false CENTER CENTER DEFAULT R1 127 BOTH false Directional false false HALF _5_BAND Standard R2 127 BOTH false Directional false false HALF _5_BAND Standard W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false C5 127 NAME false Directional false false _63V true false false W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false L1 Designed to Heat 1 to 3 12A*7 Tubes false CENTER CENTER DEFAULT L1 6.3V Transformer false CENTER CENTER DEFAULT L1 DC voltage can be tuned by adjusting R3 & R4 values. false LEFT CENTER DEFAULT L1 Artificial Center Tap false CENTER CENTER DEFAULT L1 The C4/C5 ground reference needs to use the same false LEFT CENTER DEFAULT L1 Note C5 Polarity false RIGHT CENTER DEFAULT L1 + to Ground false RIGHT CENTER DEFAULT L1 + false CENTER CENTER DEFAULT W2 127 FOUR true -1 _22 false LN1 127 NAME false Directional false false 1.0 0.0 0.0 0.0 1.0 0.0 false false W3 127 FOUR true -1 _34 false W3 127 FOUR true -1 _34 false L1 Chassis Ground false LEFT CENTER DEFAULT L1 If your 6.3V secondary already false LEFT CENTER DEFAULT L1 has a center tap (real or artificial) false LEFT CENTER DEFAULT L1 then delete R1 & R2. false LEFT CENTER DEFAULT L1 + 3.15VDC false CENTER CENTER DEFAULT L1 - 3.15VDC false CENTER CENTER DEFAULT L1 ground reference as the 6.3v center tap (real or artificial). false LEFT CENTER DEFAULT L1 (if needed) false CENTER CENTER DEFAULT L1 Artificial false CENTER CENTER DEFAULT L1 Center Tap false CENTER CENTER DEFAULT L1 Dropping false CENTER CENTER DEFAULT L1 Dropping false CENTER TOP DEFAULT L1 Filter false CENTER BOTTOM DEFAULT L1 Filter false CENTER BOTTOM DEFAULT L1 Filter false CENTER BOTTOM DEFAULT L1 AC Ground Reference false CENTER BOTTOM _270