 |
Low output on SSB after V-5 and V-6 replaced and reneutralized:
 | 1) Sw. to XCW and peak T-14, T-2, T-3. |
|
| Low or erratic output on some bands:
| (1) Check wafer points on Xtal osc. or retune |
|
| Works on all bands except 160 Mtrs:
| (1) Open L-3 or L-4 |
|
| Distortion on one sideband but not the other :
| (1) Defective Xtal filter |
| (2) Reset C-2 and rebalance carrier. |
|
| Distortion both sidebands:
| (1) V-9, V-l |
| (2) C-136 physically too close to coax tie point on audio band. |
|
| C-2 will not adjust :
| (1) C-2 defective |
| (2) 5654 Xtal defective. |
|
| Will not saturate before 12 o’clock in tune position:
| (1) C-126, C-127, C-128, and D-8 |
|
| PTO will not control:
| (1) Tuning fork jumped off shaft |
| (2) Defective PTO if no RF voltage (.5 volts) out of PTO. |
|
| Will not neutralize :
| (1) V-5, V-6, V-4 |
| (2) C-46 |
|
| SSB Flattopping :
| (1) V-1 |
| (2) C-11 |
|
| Solid AM, no modulation :
| (1) V-11 |
|
| Relay cycles, Anti-VOX control has no effect:
| (1) V-10 |
| (2) D-8, D-10, D-7 |
|
| Excessive carrier, after balancing carrier:
| (1) D-l,D-2,D-3, or D-4 in T-14 |
|
| No VOX delay:
| (1) D-10 or R-95 or C-141 |
|
| No relative output :
| (1) D-5 |
|
| Keys itself:
| (1) V-10 |
|
| Load and plate will not tune correctly:
| (1) Soft V-5, V-6, or V-4 reneutralize. |
|
| Low output on XCW or tune :
| (1) Soft V-5, V-6, reneutralize. |
|
| No spot :
| (1) Bad cables, or switch contact |
|
| T-4XB stays keyed in all modes :
| (1) D-12 |
|
| Relay chatter or slow on release:
| (1) K-l defective (poor tension or bad sequence) |
|
| No Xtal OSC. output:
| (1) Q-3 |
|
