1-3 STANDARD NOTES FOR SERVICING
1-3-1 Circuit Board Indications1-3-3 How to Remove / Install Flat
Pack-IC
1. The output pin of the 3 pin Regulator ICs is indi-
cated as shown.1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:.
Top ViewBottom View
(1) Prepare the hot-air flat pack-IC desoldering
machine, then apply hot air to the Flat Pack-ICInput
OutIn
(about 5 to 6 seconds). (Fig. 1-3-1)
2. For other ICs, pin 1 and every fifth pin are indicated
as shown.
5
Pin 1
Fig. 1-3-1
10
(2) Remove the flat pack-IC with tweezers while apply-
3. The 1st pin of every male connector is indicated as
shown.ing the hot air.
(3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
Pin 1
up. Then remove (glue will be melted). (Fig. 1-3-6)
(4) Release the flat pack-IC from the CBA using twee-
zers. (Fig. 1-3-6)
1-3-2 Instructions for ConnectorsCaution:
1. Do not supply hot air to the chip parts around the
1. When you connect or disconnect the FFC (Flexible
Foil Connector) cable, be sure to first disconnectflat pack-IC for over 6 seconds because damage to
the chip parts may occur. Put masking tape around
the AC cord.
2. FFC (Flexible Foil Connector) cable should bethe flat pack-IC to protect other parts from damage.
(Fig. 1-3-2)
inserted parallel into the connector, not at an angle.
2. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when removing
it.
FFC Cable
Hot-air
Flat Pack-IC
Desoldering
ConnectorMachine
CBA
CBA
* Be careful to avoid a short circuit.
Flat Pack-ICMasking
Tape
TweezersFig. 1-3-2
1-4 |
ACEC
HITACHI
