Pioneer PDP-5000EX Service Manual page 23

5
[ NOTES ON THE PANEL CHASSIS ASSY ]
• There are two (new and old) types of the Panel Chassis Assys.
Differences in the old and new Panel Chassis Assys
1
Panel chassis
50FHD SCAN A
Assy
Assy
Old AWU1152 AWW1129
New AWU1201 AWW1229
50FHD SCAN A Assy
2
3
2
Notes:
1 The old type of the Panel Chassis Assys was mounted in about the first 1090 units produced.
(As for PRO-FHD1, the old type of the Panel Chassis Assys was mounted in about the first 10 units produced.)
2 Either the old or new type of the SCAN Assy can be attached to a Panel Chassis Assy of the old type.
However, be careful of the following:
• When the old type of the SCAN Assy (50FHD SCAN A Assy: AWW1129, 50FHD SCAN B Assy: AWW1130) is used,
a ground wire with resistance is attached. After replacing the SCAN A/B Assy, be sure to secure the ground wire with
resistance as it was originally. (Be careful not to mix up the washers.)
• When the new type of the SCAN Assy (50FHD SCAN A Assy: AWW1229, 50FHD SCAN B Assy: AWW1230) is used,
a ground wire with resistance is not attached. Attaching a ground wire with resistance is not required after
replacement of the SCAN Assy.
5
6
1 2
50FHD SCAN B Washer
Assy (ABF1040)
AWW1130 Used
AWW1230 Not used
3
4
1
PDP-5000EX
6
7
4
3
Earth lead with
Heatsink screw resistor
(R2781, R2881)
PMH30P080FNI Used
PMH30P060FNI Not used
3
50FHD SCAN B Assy
2
4
3
2
7
8
A
Note
Although there is a
screw with the
remove-this-screw
mark near the 3
Heatsink screw, never
remove this screw.
B
1
C
D
E
F
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