Sony PLM-A55E Service Manual page 19

[Preparation for Preset Data Writing, Battery Down
Adjustment, and Charge Threshold Level Adjustment]
1 "Preset Data Writing", "Battery Down Adjustment", "Charge
Threshold Level Adjustment" and all adjustments of "Video
Block" must be performed, if IC901 (EEPROM) on the YM-
11P was replaced.
2 "Battery Down Adjustment" and "Charge Threshold Level Ad-
justment" must be performed, if IC902 (5 V REG.) or IC903
(microprocessor) on the YM-11P was replaced.
3 All adjustments of "Video Block" must be performed, if IC101
(OSD), IC103 (Y/C separation), IC201 (Y/R-Y/B-Y decoder)
on the YM-11P board, or IC401 (LCD driver) on the RG-46P
board, or LCD (optical block) was replaced.
1. Service Jigs
(1) Adjusting remote commander (RM-95-modified)
Note 1: J-6082-053-B
(2) Extension cable (for remote commander plug converter)
J-6082-291-A
Note 1: The page will not be changed over, unless the microprocessor in
the adjusting remote commander is a new one (UPD7503-G-C56-
12). In such a case, replace with new microprocessor (8-759-148-
35).
2. Adjusting Remote Commander
For the adjustment, the adjustment data saved in the nonvolatile
memory (EEPROM) must be rewritten, and for this purpose the
adjusting remote commander is used.
The adjusting remote commander makes two-way communica-
tion with the product using a remote control signal line (LANC).
The adjusting remote commander transmits pages, addresses,
and data up/down commands to the product. The product trans-
mits pages, addresses, and data to the adjusting remote com-
mander.
3. How to Use Adjusting Remote Commander
(1) Connect the adjusting remote commander to the CN902 on YM-
11P board via extension cable (J-6082-291-A).
(
At this time, set the switch of extension cable to OFF
(OPEN) position.
Turn ON the power on the set.
(2) Set the HOLD switch on the adjusting remote commander to
the HOLD (SERVICE) position.
If connection is normal, the LCD display on the adjusting re-
mote commander will be as shown in Fig.3-2.
Page Data
Fig. 3-2
)
Address
– 19 –
Adjusting Remote Commander RM-95 (J-6082-053-B)
HOLD
WIDE
ZOOM
TELE
REC
REVIEW FOCUS
Page change
AUTO/MAN
EDIT SEARCH
COUNTER
RESET DISPLAY FRAME SLOW
Data change
REC
REW
PB
STOP
Fig. 3-3
NORMAL/SERVICE
mode selection
START/
STOP
POWER
Data writing
PAUSE
FF
Address
change
RM-95