Functions :
- Horizontal sync separator
- Noise Invertor
- Horisontal oscillator & drive
- Horisontal phase Detector
- Vertical oscillator
- Sand-Castle Pulse Generator
- Vertical Sync Separator & Vertical Driver
- Vertical blangking generator
| Pin No. | Function | Voltage |
| 1. | Vertical output (50 Hz.) | 3.4 |
| 2. | Vertical feedback (output to input) | 3.5 |
| 3. | Vertical frequency adjust (50 Hz.)(V-Hold) | 5.6 |
| 4. | Vertical sync separator (50 Hz.) | 2.4 |
| 5. | Video input to sync separator | 3 |
| 6. | Horizontal sync separator (15625 Hz.) | 6.6 |
| 7. | Horizontal sync separator (15625 Hz.) | 5.8 |
| 8. | Phase detector1 output | 3 |
| 9. | Ground (-Ve supply voltage) | 0 |
| 10. | Positive (+ Ve supply voltage ) | 12 |
| 11. | Horizontal frequency out (15625 Hz.) | 3.2 |
| 12. | Horizontal flyback pulse input (15625 Hz.) | 0.4 |
| 13. | Video transmitter identification / VCR switch | 11 |
| 14. | Phase detector 2 output | 3.7 |
| 15. | Horizontal oscillator frequency (15625 Hz.) adjustment (H-Hold) | 4.4 |
| 16. | Horizontal oscillator start supply circuit | 9 |
| 17. | Sand - castle pulse output | 1.4 |
| 18. | Coincidence detector | 0.6 |