Disassembly Of The Set - Sharp VL-E780U Service Manual

4. DISASSEMBLY OF THE SET

4-2. Disassembly of the VCR main body
1. Removal of the VCR lid shaft
(1)Remove one screw ((j)LX-HZ0063TAFC).
4-3. REPLACEMENT OF CCD SENSOR
4-3-1. BEFORE REPLACEMENT
1) The CCD image sensor is more sensitive to electrostatic breakage than C-MOS LSI. Therefore sufficient means to
prevent electrostatic damage must be taken when it is replaced.
• Ground the soldering iron.
• Ground also the human body, using the wrist strap(through an 1 Mohm resistor).
• Until the CCDsensor is mounted on the PWB, fit it to the conductive sponge, and short-circuit the foot lead.
2) Take utmost care so that the surface glass of CCD sensor and optical filter are not contaminated and damaged. If any
contamination is found, for example fingerprint, wipe it off with silicon paper or clean chamois skin.
3) When replacing the CCD sensor, use the antistaic grounded soldring iron, and perform quickly soldering.
4-4. INITIAL SETTING OF E
4-4-2. IC702 (E 2 PROM)
When the IC702 has been replaced, make the following settings and adjustments.
1. Remove the backup battery (CR2025)
2. Turn power switch to CAMERA
3. Setting up the V ADJ mode as follows.
* After press the CONTINUE key, press the VCR ADJ key on service remote control (RRMCG0033TASA).
E780U
address data
03 F8
0B 07
01 00
09 FF
04 00
0C FF
02 01
0A FE
1
Index Mark
YYWWXXX
14
2
PROM IC
E785U E785T
data data
FA FE
05 01
00 00
FF FF
00 00
FF FF
01 07
FE F8
7
JAPAN
SHARP
LZ2413H5
8
3
VL-E780U
VL-E785U
VL-E785T
Area A
(j)