Periodic Check List - Sony GY-8240UWD Maintenance Manual

2-1. Periodic Check
3. Accuracy of hours meter
This unit does not use a battery backup CPU nor any special device for storing the hours meter data.
The hours meter data stored contains a small amount of allowable error.
This unit automatically stores hours meter data in the flash memory so that the storage interval becomes geometric reality.
The nth storage later from the power ON state is performed 1.5
The maximum interval is 24 hours. The data will be saved in the memory after extrapolation arithmetic of half of the next
storage interval.
The error of the hours meter data stored is about ± 20% (maximum) when n is large.
The cleaning and thread counter are not stored in the hours meter everytime the counter is increased, but is updated at the
above storage interval.

2-1-2. Periodic Check List

Perform periodic check in accordance with the table.
The replacement time shown in the table is not the guarantee term of parts.
Note:
The part marked with "↓" in the table is replaced simultaneously with when the part in the column below
its mark is replaced.
The "R" mark in this table indicates the replacement timing of parts.
Hours
Item
Meter * * * * * 1
Drum Block
2
Upper Drum *2
2
Brush/Slip Ring
2
Drum *2
Cleaners
4
Cleaning Roller *3
2
Rotary Head Cleaner
2
*3
CTL/TC Head Cleaner
Tape Running System
2
*3
Pinch Roller
2
CTL/TC Head
2
Capstan Motor
Driving System
2
Pinch Solenoid
2
Reel Motor
Others
1
Fan Motor (Power supply)
1
Fan Motor (Rear panel)
* 1: Refer to Section 2-1-1.
*
2: Do not subject this unit to high humidity or excessive dust. This may shorten the life of these parts. Therefore, it is recommended to
use this unit in an air-conditioned and dust-free environment and store the cassette at ordinary temperature and humidity.
* 3 : The life of these parts may be shortened depending on the operating condition of this unit or the operating environment.
2-2
Inspetion Hours (h)
5000 10000
↓
R
↓
R
– R
↓
Replace when used
30,000 times.
– R
Replace when used 1,000H.
R R
– R
R R
– R
– R
Replace when used 40,000H.
Replace when used 50,000H.
n_1
minutes from the previous storage.
Replacement Parts
Part Name
UPPER DRUM ASSY (DDR-58-R)
BRUSH SR4 ASSY (RP)
DRUM ASSY (DDH-58A-R)
CLEANER ASSY (RP)
W CLEANER ASSY (RP)
CL ARM ASSY
PINCH ARM ASSY
AT HEAD ASSY
SCV16/J-RP
PINCH PRESS ASSY
REEL MOTOR TABLE (T) ASSY (RP) A-8326-890-A
REEL MOTOR TABLE (S) ASSY (RP) A-8326-889-A
DC FAN
DC FAN
Procedure
Parts No. Q'ty
A-8324-483-A 1 Refer to Section 3-2.
A-8312-151- 1 Refer to Section 3-4.
A-8324-482-A 1 Refer to Section 3-3.
A-8279-790-A 1 Refer to Section 3-5.
A-8279-791-A 1 Refer to Section 3-5.
X-3605-789- 1 Refer to Section 3-6.
X-3605-881- 1 Refer to Section 3-9.
A-8267-422- 1 Refer to Section 3-8.
A-8325-190-A 1 Refer to Section 3-11.
A-8324-938- 1 Refer to Section 3-10.
1 Refer to Section 3-14.
1
9-885-001-66 1 Refer to Section 1-8-2.
1-698-779- 1 Refer to Section 3-25.
GY-8240UWD
GY-8240FC