Main Board (Component Side) - Sony PRS-505/SC - Portable Reader System Service Manual

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• Y : Parts extracted from the conductor side.
• : internal component.
f
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Parts face side: Parts on the parts face side seen from
(Conductor side) the pattern face are indicated.
Pattern face side: Parts on the pattern face side seen from
(Component side) the parts face are indicated.
• MAIN board is multi-layer printed board.
However, the patterns of intermediate-layers have not been in-
cluded in diagrams.
* Replacing of IC1001 on the MAIN board used in this
set requires a special tool.
• Lead layouts
Lead layout of conventional IC CSP (Chip Size Package)
PRS-505
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specifi ed.
• : internal component.
f
• C : panel designation.
Note: Note:
The components identi- Les composants identifi és
fi ed by mark 0 or dotted par une marque 0 sont
line with mark 0 are criti- critiques pour la sécurité.
cal for safety. Ne les remplacer que par
Replace only with part une piéce portant le nu-
number specifi ed. méro spécifi é.
• A : B+ Line.
• B : B– Line.
• C : adjustment for repair.
• Power voltage is dc 5.2V and fed with regulated dc power
surface
supply from TP402 and TP400 on the MAIN board.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : POWER ON
( ) : AUDIO PLAY
* : Impossible to measure
(For this model, the voltage is produced only when the
screen is changed. Under the power on, there is a voltage
that is not produced.)
• Voltages are taken with VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
: AUDIO
F
: VIDEO
L
: USB
N
: SD MEMORY CARD/MEMORY STICK DUO
O
* Replacing of IC1001 on the MAIN board used in this
set requires a special tool.
• The voltage and waveform of CSP (chip size package) cannot be
measured, because its lead is different feom that conventional
IC.
• Waveforms
– MAIN Board –
IC107
(Audio play mode)
3.6 Vp-p
89 ns
2 V/DIV, 50 ns/DIV
IC953 (XO)
C
(USB connection state)
2.2 Vp-p
55.2 ms
1 V/DIV, 20 ms/DIV
IC1001 (XTAL32K)
K
0.6 Vp-p
30.6 s
200 mV/DIV, 10 s/DIV
IC801 (X2)
2.2 Vp-p
30.8 s
1 V/DIV, 20 s/DIV
IC801 (OSC2)
3.1 Vp-p
204 ns
1 V/DIV, 100 ns/DIV
15 15
PRS-505