| Pin No. | Functions | Voltage |
| 1. | Positive ( + Ve supply voltage ) | 20 |
| 2. | Audio frequency output for driving the speaker | 10 |
| 3. | Not conneted | NC |
| 4. | Ground (- Ve supply voltage ) | 0 |
| 5. | Not connected | NC |
| 6. | Ground (- Ve supply voltage ) | 0 |
| 7. | Audio frequency input | 1.2 |
| 8. | Decoupling capacitor | 11.5 |
| 9 | Negative(-Ve ) feedback (output to input ) | 0.1 |
| Pin No. | Fuctions | Voltage |
| 1. | Positive (+Ve)Supply voltage | 12 |
| 2. | Positive (+Ve)Supply voltage output srage ( Tringger pulse input ) | 12 |
| 3. | Horizontal tringer pulse output ( 15625Hz.) | 1.2 |
| 4. | Selection of output pulse duration | 0 |
| 5. | Decoupling Capacitor | 6.5 |
| 6. | Horizontal flyback (blankimg)pulse (15625Hz.) for 2nd phase coparator | 0.2 |
| 7. | Sandcastle (horizontal blanking pulse ) output (15625Hz.) | 1.8 |
| 8. | Vertical sync output (50Hz.) | 0.2 |
| 9. | Sync pulse input | 1.6 |
| 10. | Noise separator input | 2.2 |
| 11. | VCR switching ( Coincidence ) | 5.7 |
| 12. | Time constant switching (third phase comparator ) | 2.2 |
| 13. | Fist phase comparator output | 6.1 |
| 14. | Ramp ( sawtooth ) oscillator capacitance | 6 |
| 15. | Horizontal frequency (15625Hz.) adjust (H-Hold) | 6 |
| 16. | Ground (-Ve) supply voltage | 0 |
| Pin No. | Functions | Voltage |
| 1. | Positive (+Ve supply voltage ) | 12 |
| 2. | Positive (+Ve supply voltage ) output stage (trigger pulse input) | 12 |
| 3. | Horizontal trigger pulse output (15625Hz.) | 1.2 |
| 4. | Selection of output pulse duration | 0 |
| 5. | Decoupling Capacitor | 6.5 |
| 6. | Horizontal flyback(blanking)pulse (15625Hz.)for 2nd phase caparator | 0.2 |
| 7. | Sancastle (Horizontal blanking pulse )output (15625Hz.) | 1.8 |
| 8. | Vertical sync output (50Hz.) | 0.2 |
| 9. | Sync pulse input | 1.6 |
| 10. | Noise separator input | 2.2 |
| 11. | VCR swithching (Coincidence) | 5.7 |
| 12. | Time contant swithching (third phase caomparator ) | 2.2 |
| 13. | First phase comparator output | 6.1 |
| 14. | Ramp (sawtooth)oscillator capacitance | 6 |
| 15. | Horizontal frequency (15625 Hz.) adjust (H-Hold) | 6 |
| 16. | Ground (-Ve supply voltage ) | 0 |
| Pin No. | Functions | Voltage |
| 1. | Positive (+Ve supply voltage) | 12 |
| 2. | Positive (+Ve supply voltage) output stage (Trigger pulse input) | 12 |
| 3. | Horizontal trigger pulse output (15625 Hz.) | 1.2 |
| 4. | Selection of output pulse duration | 0 |
| 5. | Decoupling capacitor | 6.5 |
| 6. | Horizontal flyback (blanking)pulse (15625 Hz.) for 2nd phase comparator | 0.2 |
| 7. | Sandcastle (Horizontal blanking pulse) output (15625 Hz) | 1.8 |
| 8. | Vertical Sync output (50 Hz.) | 0.2 |
| 9. | Sync pulse input | 1.6 |
| 10. | Noise separator input | 2.2 |
| 11. | VCR switching ( Coincidence ) | 5.7 |
| 12. | Time constant switching ( third phase coparatior ) | 2.2 |
| 13. | First phase comporator output | 6.1 |
| 14. | Ramp ( sawtooth ) oscillator capacitance | 6 |
| 15. | Horizontal frequency ( 15625 Hz. ) adjust (H-Hold) | 6 |
| 16. | Ground (-Ve supply voltage ) | 0 |
| Pin No. | Functions | Voltage |
| 1. | Phase detector output | 1.5 |
| 2. | Horizontal flyback(blanking)pulse(15625Hz.)Input | 0 |
| 3. | Horizontal sync pulse input | 0 |
| 4. | Re-start count capacitor | 1.2 |
| 5. | Slow start and transfer characteristic ( voltage varies ) | up-down |
| 6. | Over current protection input | 0.7 |
| 7. | Over current protection input | 6.8 |
| 8. | Feedback output to input | 6.3 |
| 9. | Positive (+ Ve supply voltage ) | 13 |
| 10. | Reference voltage input | 6.8 |
| 11. | Horizontal output (15625 Hz.) | 2 |
| 12. | Duty factor adjust | 2 |
| 13. | Oscillator timing network | 1.3 |
| 14. | Reference voltage (saw tooth oscillator) | 1.5 |
| 15. | Reference stage input (saw tooth oscillator ) | 1.9 |
| 16. | Ground (-Ve supply voltage ) | 0 |
| Pin No. | Functions | Voltage |
| 1. | (50Hz.)Vertical frequency,output | 3.4 |
| 2. | Vertical feedback | 0.9 |
| 3. | Vertical oscillator frequency (50Hz.) control (V-Hold) | 4 |
| 4. | Vertical ramp (sawtooth)generator | 7.3 |
| 5. | Composite video signal with negative going sync pulses,input | 3 |
| 6. | Sync separator | 6.6 |
| 7. | Noise inverter | 5.1 |
| 8. | Horizontal oscillator phase control loop 1 (sync pulses to oscillator) | 3.3 |
| 9. | Ground (-Ve supply voltage ) | 0 |
| 10. | Positive (+ Ve supply voltage) | 11 |
| 11. | 15625 Hz. frequency output | 1.4 |
| 12. | Flyback ( blanking ) pulse ,input | 0.1 |
| 13. | Video transmitter identification, output | 10.6 |
| 14. | Phase adjustment | 2.6 |
| 15. | Horizontal oscillator ( 15625 Hz. ) | 5.5 |
| 16. | Start supply | 9 |
| 17. | Sand castle , output | 1.4 |
| 18. | Coicidence detector, video tranmitter identification circuit | 5.8 |
Functions :
Pin No. | Functions | Voltage |
1. | Vertical driver output(50Hz.) | 5.5 |
2. | Vertical feedback to vertical comparator | 4.4 |
3. | Vertical oscillator frequency(50Hz.)control (V-Hold) | 5.4 |
4. | Vertical sync separator (50Hz.) | 5.3 |
5. | Composite video signal input to sync separator | 3 |
6. | 7.9 | |
7. | Horizontal oscillator (15625Hz.) | 6.4 |
8. | Horizontal oscillator (15625Hz.)phase control phase detector | 3 |
9. | Ground (-Ve supply voltage) | 0 |
10. | Positive (+ Ve supply voltage) | 12.4 |
11. | Horizontal frequency output (15625Hz.) | 3.8 |
12. | Flyback (blanking) input pulse ( 15625Hz.) | 0.4 |
13. | Video tranmitter identification output | 6.8 |
14. | Horizontal oscillator phase control ( 15625Hz. ) | 2.6 |
15. | Horizontal oscillator frequency control ( 15625Hz. )H-hold | 4.4 |
16. | Positive stabilized supply to start circuit | 9 |
17. | Sand castle pulse output | 1.4 |
18. | Coincidance detector (phase detector) | 0.6 |
