Servicing Notes - Sony MZ-E505 Service Manual

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
(LCX-4E)
The laser diode in the optical pick-up block may suffer electro-
static break-down easily. When handling it, perform soldering
bridge to the laser-tap on the flexible board. Also perform mea-
sures against electrostatic break-down sufficiently before the op-
eration. The flexible board is easily damaged and should be handled
with care.
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
• In performing the repair with the power supplied to the set, re-
moving the MAIN board causes the set to be disabled.
In such a case, fix a convex part of the open/close detect switch
(S809 on MAIN board) with a tape in advance.
main board
SECTION 1

SERVICING NOTES

ABOUT VIOLET-COLOR-TYPE
Not a whole set of the violet-color-type is colored violet, but only
the ornamental belt and window (ornament) is violet, and the up-
per panel, the case (rear) and the battery case lid are colored sil-
ver.
upper panel (silver)
window (ornament)
(violet)
COLOR VARIATION
E
Hong Kong
• Replacement of CXD2671-210GA (IC601) used in this set re-
quires a special tool.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
tape
S809
case (rear) (silver)
SILVER BLUE
a –
a a
the lead free mark due to their particular size)
MZ-E505
battery case lid (silver)
ornamental belt (violet)
PINK VIOLET
– –
a a
3