6-13
(4) Envelope Check
1) Make recordings on T-120 (E-120) and T-160 (E-180) tape.
Make sure the playback output envelope meets the specification as shown in Fig. 6-18.
2) Play back a self recorded tape (recording made on the unit using with T-120 (E-120).
The video envelope should meet the specification as shown in Fig. 6-18.
In SP mode, (A) should equal (B).
If the head gap is wide, upper cylinder should be checked.
Fig. 6-18 Envelope Input and Output Level
(5) Tape Wrinkle Check
1) Run the T-160 (E-180) tape in the playback, FPS, RPS and Pause modes and observe tape wrinkle at each guide.
2) If excessive tape wrinkle is observed, perform the following adjustments in Playback mode :
◆
Tape wrinkle at the guide roller S, T section : Linearity adjustment.
◆
Tape wrinkle at tape guide flange : ACE head assembly coarse adjustment.
6-3-3 Reel Torque
1) The rotation of the capstan motor causes the holder clutch ass’y to rotate through the belt pulley.
2) The spring wrap PLAY/REV of holder clutch ass’y drives the disk reel S, T through gear idler by rotation of gear center ass’y.
3) Brake is operated by slider cam at FF/REW mode.
4) Transportation of accurate driving force is done by gears. (Gear Center Ass’y)
Note:
If the spec. does not meet the followings specifications, replace the holder clutch ass’y and then recheck.
< Table 6-3 >
MODE
TORQUE g/cm
GAUGE
PB
42
±
11
Cassette Torquemeter
RPS
145
±
30
Cassette Torquemeter
A
B
Summary of Contents for D910B
Page 68: ...3 4E MEMO ...
Page 70: ...4 3 4 4 4 1 VCR MAIN COMPONENT SIDE ...
Page 71: ...4 6 4 5 CONDUCTOR SIDE ...
Page 72: ...4 7 4 8 4 2 DVD MAIN COMPONENT SIDE ...
Page 73: ...CONDUCTOR SIDE 4 9 4 10 ...
Page 74: ...4 12 4 11 4 3 S M P S COMPONENT SIDE CONDUCTOR SIDE ...
Page 76: ...4 16E MEMO ...
Page 79: ...5 1 S M P S 5 6 5 5 ...
Page 80: ...5 2 POWER DRIVE 5 7 5 8 ...
Page 81: ...5 3 OSD VPS PDS 5 10 5 9 ...
Page 82: ...5 4 A2 NICAM 5 11 5 12 ...
Page 83: ...5 5 AUDIO VIDEO 5 14 5 13 ...
Page 84: ...5 6 Hi Fi 5 15 5 16 ...
Page 85: ...5 7 INPUT OUTPUT 5 18 5 17 ...
Page 86: ...5 8 TM 5 19 5 20 ...
Page 87: ...5 9 SYSCON 5 21 5 22 ...
Page 88: ...5 10 LOGIC FUNCTION 5 23 5 24 ...
Page 89: ...5 11 SECAM SLV D950B D910B D910R Only 5 25 5 26 ...
Page 90: ...5 12 DVD MAIN MICOM AV DECODER 5 27 5 28 ...
Page 91: ...5 13 DVD SERVO 5 29 5 30 ...
Page 92: ...5 32E 5 31 5 14 DVD AUDIO VIDEO ...
Page 106: ...6 14E MEMO ...