Sony NW-HD5 (serv.man2) Service Manual ▷ View online
NW-HD5/HD5H
OPERATION MANUAL
NEW TECHNICAL THEORY
FOR SERVICING
Internal Use Only
PORTABLE HARD DISK AUDIO PLAYER
2
TABLE OF CONTENTS
Section Title Page
1. Power Control Circuit ................................................................................. 3
1-1. VB voltage ................................................................................................... 3
1-2. Generated Voltages List ............................................................................... 6
1-3. 3.3V/2.4V Generator Circuit.......................................................................... 8
1-4. Power Control by MULTI INTERFACE IC7001 ............................................ 10
2. Charging Circuit ....................................................................................... 11
2-1. Charging Circuit ......................................................................................... 11
3. Appendix................................................................................................... 14
3-1. Service Position ......................................................................................... 14
NOTE ON HANDING THIS MANUAL
The contents described in this manual are prohibited from using outside Sony Corporation. Copying the data and reprinting the data in this PDF file to other
homepages are strictly forbidden.
homepages are strictly forbidden.
For NW-HD5H, 30GB HDD is built in.
The circuit operation of NW-HD5 is the almost same as that of NW-HD1. Refer to the following operation manual. The different points are mentioned
in this manual.
- NW-HD1 Operation Manual (Japanese): 9-879-180-01
- NW-HD1 Operation Manual (English): 9-879-181-01
in this manual.
- NW-HD1 Operation Manual (Japanese): 9-879-180-01
- NW-HD1 Operation Manual (English): 9-879-181-01
Copying is strictly prohibited
3
1. Power Control Circuit
1-1. VB voltage
Fig.1-1 shows VB voltage generator circuit. In this unit, there are 3 kinds of power sources shown in Table.1-1.
Table.1-1 Power Sources
Voltage
Power Source
DC-IN 6V
AC Power Adapter
Battery Voltage
Rechargeable Lithium-ion battery
VBUS Voltage (5[V])
PC
= During the battery driving =
The battery voltage is input to pin-5 and pin-6 [BAT] of Charge Control IC9002. During the battery driving, the controller section inside IC9002 does not start-up.
The battery voltage is output from Pin-15, Pin-16 and Pin-17[OUT] to the unit as VB voltage.
= During the AC power adapter driving =
DC-IN 6V voltage which is supplied from AC power adapter is input to Pin-4 [AC] of Charge Control IC9002 and is also input to Pin-9 [CE] of IC9002 via D9008.
Then, IC9002 starts up. When IC9002 starts up, IC9002 creates 4.4[V] from 6[V] and outputs 4.4[V] from Pin-15, Pin-16 and Pin-17 [OUT] to the unit as VB voltage.
= During the VBUS voltage driving =
VBUS voltage which is supplied from PC is input to Pin-20 [USB] of Charge Control IC9002 and is also input to Pin-9 [CE] of IC9002 via D9008. Then, IC9002 starts up.
When IC9002 starts up, IC9002 outputs VBUS voltage from Pin-15, Pin-16 and Pin-17 [OUT] to the unit as VB voltage.
The unit does not operate without inserting the battery even if the power from AC power adapter is supplied to the unit.
The message “BATTERY IS MISSING” appears on LCD of the unit.
If the power from AC power adapter is supplied to the unit and the unit is connected to PC, the unit operates with DC-IN 6V voltage which is
supplied from AC power adapter. (The unit charges the battery with DC-IN 6V voltage, not with VBUS voltage.)
This unit can operate with VBUS voltage which is supplied from PC. But, SONY does not guarantee the operation with VBUS voltage.
Recommend customers to use AC power adapter.
One Point
Copying is strictly prohibited
4
1. MAIN SYSTEM CONTROLLER IC1003
When MAIN SYSTEM CONTROLLER IC1003 starts up, it outputs “H” signal from Pin-147[PQ1/FFCLR]. By this “H” signal, the switch inside IC1001 is turned “ON”. Then
XDCIN_DET signal is input to Pin-150 [PQ4] of MAIN SYSTEM CONTROLLER IC1003. IC1003 detects whether the driving voltage is the battery voltage or DC-IN 6V voltage
supplied from AC power adapter by using the input voltage shown in Table.1-2.
Table.1-2 Detecting DC-IN 6V voltage
IC1003 Pin-150 [PQ4]
Description
L
DC-IN 6V voltage is supplied.
H
DC-IN 6V voltage is not supplied.
2. System Controller Circuit inside IC9003
When any of the input signals to pin-2 [XWK4] through pin-5 [XWK1] of Power Control IC9003 changes from “H” to “L”, the system controller section inside IC9003 wakes up.
The “wake-up conditions” of the unit is shown in Table 1-3.
Table.1-3 Wake-up conditions
Pin-5 [XWK1] of IC9003
Pin-4 [XWK2] of IC9003
Pin-3 [XWK3] of IC9003
Pin-2 [XWK4] of IC9003
Condition
When any key of the remote controller is
pressed
pressed
When any key of the unit is
pressed
pressed
When VBUS voltage is supplied
to the unit. (Refer to Fig.1-1)
to the unit. (Refer to Fig.1-1)
When DC-IN 6V voltage is
supplied to the unit from AC
power adapter.
(Refer to Fig.1-1)
supplied to the unit from AC
power adapter.
(Refer to Fig.1-1)
3. MAIN SYSTEM CONTROLLER IC1003
MAIN SYSTEM CONTROLLER IC1003 detects whether the battery is inserted or not by using the input status shown in Table.1-4.
Table.1-4 Battery Detection
IC1003 Pin-118 [PD0]
Description
H
Battery is inserted.
L
Battery is not inserted.
