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TOSHIBA V 426B
General Information Also Covers V 727B Matrix
Item See Model Book
6 6 6 Deck Alignment ............................................................................ Toshiba V 856 Mech. Adjustments ...................................................................... Toshiba V 856 Deck Exploded View .................................................................... Toshiba V 856

1
Mechanical Parts List
Item
0040 0550 0980A 0980B 1040A 1070A

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Part No.
70903992 70031714 70031561 70031620 70031567 70031559

Description
Upper Cylinder Assy Lower Cylinder Assy Rotor (Screw Securing Type) Rotor (Press Fit Securing Type) Screw Ground Cap

Wiring Diagram

Exploded Parts View Head Assembly

Recommended Safety Parts
Item
0001C 0014C 0250 0400 RS041 RT135 RW012 RW021 CP001 CP002 CP003 RP018 RP021 RP041 RP042 RP051 RP071 RP091 RP092 BP001 FP001 LP001 LP002 LP020

Part No.
70061686 70012604 70051827 70051620 70041671 70041236 70041074 70040126 70040056 70041047 70041646 70041078 70041673 70041081 70040456 70041116 70040125 70041081 70041670 70011176 70010445 70011950 70011949 70011948

Description
Owners Manual Power Cord Front Panel Top Cover Res, Fusible Res, Fusible Res, Fusible Res, Fusible Cap, Plastic Cap, Electrolytic Cap, Ceramic Res,Fusible Res, Fusible Res, Fusible Res, Fusible Res, Fusible Res, Carbon Res, Fusible Res, Fusible Inlet Fuse, 1A, 250V Line Filter Line Filter Power Transformer English

18 1 27 3.9 100nF 47F 2.2nF 1.5 2.2k 0.1 10 39 47 0.1 120

J 0.3W J 0.4W J 0.3W M 275V M 385V M 400V J 0.3W J 0.3W F 0.4W J J 0.3W J 0.3W F 0.4W J 0.3W

Electrical Adjustments
Adjustment will be performed with the following test equipment. 1. Color TV (Monitor) 2. Oscilloscope, 2 CHs, 15 MHz or higher with delay system 3. Frequency counter (7 digits or higher) 4. Millivoltmeter 5. Digital voltmeter 6. Tester (20k/V) 7. Audio generator 8. Audio attenuator 9. Alignment tapes Part code: ST-C6: 70909409, ST-C7: 70909410 10. Alignment screw driver (jig) 11. Color pattern generator 12. Video sweep generator Color bar signals of 75% recorded on the alignment tapes are shown in Fig. 2-1-1. Video input: Negative sync, standard composite video signal 1 V(p-p), 75 Video output: Same as the video input 1 V(p-p), 75 Audio input: 308 mV(rms), more than 47 k (phono type), more than 10 k (21 pin type) Audio output: 308 mV(rms), less than 4.7 k (phono type), less than 1.0 k (21 pin type) Recorded the alignments in the sequence as shown in Fig. 2-1-2.

Fig. 2-1-2

Fig. 2-1-1

TOSHIBA V 426B

2
Audio Diagram

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TOSHIBA V 426B

3
Keyboard / Front Panel Diagram

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TOSHIBA V 426B

4

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Power Supply Diagram

TOSHIBA V 426B

5
Scart PDC Diagram

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TOSHIBA V 426B

6
Servo Logic Diagram

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TOSHIBA V 426B

7
Tuner IF Diagram

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TOSHIBA V 426B

8
Video Diagram

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