Ampex 601 - AMPEX Model 601 Tape Transport Malfunction Tables; Troubleshooting Rewind;FF Malfunctions; Troubleshooting Start;Stop Malfunctions

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4 -10
FLATTED OR DENTED
CAPSTAN IDLER TIRE
DEFECTIVE OR JM -
PROPEl?LY INST ALLflD
NYLON DRIVE BELT f6R)
Rfl\Y
1
/ND IDLER 17 I NOT
DISENGAGING FIW/\1
MOTOR PULLEY
(61 I
REELS MISALIGN ED IViT II
RESPECT TO TAPE GUIDES
1. If the capstan idler ( 79) is left en-
gaged over an extended period
when the machine is nm operating,
the idler tire may become dented.
If running the machine in the play
mode for several hours does not re-
store the tire to normal, the idler
must be replaced.
I. Belt spliced improperly.
2. Belt installed with sp lice joim
toward pulley.
3. Belt worn because misaligned mo -
ror pulley ( 61) causes the belt to
track against one of the capstan
pulley nang es ( 42).
I. Contaminated rewind idler guide
( 8).
I. This will usually cause rape scrape
which may or may not be audib le
but will generally appear as nmcer .
See subparagraph 8.'1 below.
TABLE 4-2
Tr o11b leshooting REW I ND and FAST FORWARD Mode Malf11nctio11s
Trouble
TAKE.UP TENSION
LOW
EXCESSIVE HOLD-
B,'lCK
TENSION
BRAKE SHOCK RELIEF
ROLLE/?. r 21 NOT !?£ -
LEASING FROM FAST
r-orrn 'I AIW CLUTC /1 {16)
REW I ND IDLER 17! NOT
ENGAGING MOTOI?.
PULLEY /6/) BI ND IN
REWIND IDLER BEARING
(PART OF 7)
MALFUNCTI
ONING
TURNTABLF. PJVO'/S
(24 or 36)
P robab le Cause
Clutch leaf spring ( 17 and 32) too
weak, usually caused by tamper i ng. R e-
place. Never attempt co increase re-
wind rakeup tension ro o!Tset mher
problems.
1. Contam i nated holclback wipes (25
or 3 7).
2. Bakelite drum ( 23 or 35) on which
wipe operates h as been roughened.
Evidence of bent or misassemb l ed parts.
Check exploded view, Fig. 4-4.
Bind in idler guide (8) caused by con-
tamination.
Bind in turntable centering decent
(77).
TABLE 4-3
Trottbleshooting Starting, Stopping, and Shuttling Malfunctions
Trouble
TAPE LOOP THROWN
ON STARTING IN PLAY
MODE (LOW PLAY
TAKEUP TENSION)
TAPE LOOP THROWN
ON STOPPING OR
SHUTTLING
Probable Cause
1. Play takeup belt ( 69) contam-
inated.
2. Nylon drive belt ( 68) contami-
nated. If either the play rakeup belt
or the nylon drive belt is contami-
nated with oil, an overoiled motor
or capstan is indicated. Clean all
affected parts thoroughly with car-
bon tetrachloride.
3. Slippage between play rakeup belt
( 69) and cl utch ( 19) due ei ther
to weak play tak eu p arm sp ring
( 41 ) or bind in play rakeup pulley
bea r ing ( part of 40).
4. Bind in turntab le shaft bearings
( 22 or 24) due ro contam i nation.
Clean and lubricate with two or
three drops of medium weight oil.
5. Play rakeup brake release ( 14) in-
operative due to bind, weak or un-
attached spring ( 11 ) causing shock
relief ro ll er ( 2 ) to drag on fast
forward clutch tire ( 1 6).
I. One or boch brake shock relief ac -
tuators ( 2) binding.
2. One or both brake shock relief
springs ( 12) off. End loops on
these springs must be fully closed
to prevent their becoming discon-
nected.
3. Bind in rurnrable centering decent
( 77).
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