Sony NHF800 service manual 261 AD, VBsAdj adjustments, Charge Function Check

Page 18

MZ-NH700/NHF800

Ver 1.1

3-4-3. VBsAdj adjustments

Procedure:

1.In the “3-4-2. PwrAdj Adjustments” completed status, press the > key to display as follows.

Display

240 VBsAdj

2.Apply the voltage of 5 V to the CL453 (VBUS 5V) and CL460 (VBUS GND).

3.Press the > key to change the item number to 2241.

4.Adjust with [VOL+]/[VOL--]keys so that the value of digital voltmeter becomes specification value. (refer to “table 3-4-2. VBsAdj Specifications”)

5.Press the X key to write the adjusted value.

6.Press the > key to select the next item, and repeat adjustments to item number 2243 at the same manner as step 3 to step 5.

Item No.

Display

Specification value

Measuring point

 

 

 

 

2241

241 AD **

1.13 V ± 0.01 V

CL8001

 

 

 

 

2242

242 AD **

2.05 V + 0.02 V

CL8027

 

 

 

 

2243

243 AD **

3.30 V ± 0.01 V

CL8055

 

 

 

 

Note1: **” is adjustment value (hexadecimal number).

Note2: Ground point of all adjustment points is CL433.

Note3: Refer to page 18 for adjustment location.

Table 3-4-2. VBsAdj Specifications

7.Press the > key to select the item number 2244, and turn off the power supply of battery terminal.

8.Adjust with [VOL+]/[VOL--]keys so that the voltage of between CL935 and CL433 (GND) becomes 1.80 V (− 0.02 V).

9.Press the X key to write the adjusted value.

10.Apply the voltage of 1.2 V to the battery terminal again.

11.Press the x key to display “240 VBsAdj” (Item number: 2240).

12.Turn off the voltage of 5 V to the CL453 (VBUS 5V) and CL460 (VBUS GND).

13.Press the x key three times and back to the Display Check mode.

3-5. Charge Function Check

Note: When perform this check, don’t apply a voltage to battery terminals.

Procedure:

1.Connect the digital voltmeter to CL431 (BATT+) and CL433 (GND).

2.Enter the test mode using the AC adapter.

3.Press the [VOL+] key to enter the Manual mode.

4.Press the [VOL+] key twice to display as follows.

Display

2

POWER

5.Press the > key once, press the [VOL+] key once, press the

>key once, press the [VOL+] key three times, and press the

>key once to display as follows.

Display

261 AD **

adjustment value (hexadecimal)

6.Adjust with [VOL+]/[VOL--]keys so that the value of digital voltmeter becomes 1.80 V.

7.Press the X key to write the adjusted value.

8.Press the > key to select the next item.

9.Disconnect the digital voltmeter.

10.Press the > key to select the next item (2262) and display “262 AD CC”.

11.Press the X key and confirm that the adjustment value changes from “CC” to “DD”.

If it changes to “BB”, IC401 (for charge IC) is fault.

12.Press the > key to select the next item (2263) and display “263 AD CC”.

13.Press the X key and confirm that the adjustment value changes from “CC” to “DD”.

If it changes to “BB”, IC401 (for charge IC) is fault.

14.Disconnect the power supply (AC adaptor).

15.Connect the resistor of the specified value (see table below) to the battery terminals (CL431: BATT+, CL432: BATT), and then connect the AC adapter again, and enter the test mode.

16.Select item number 2264 through the operation similar to steps 2 to 8.

17.Press the X key and confirm that the adjustment value changes from “CC” to “DD”.

If it changes to “BB”, IC401 (for charge IC) is fault.

18.In the same manner, exchange the resistors with the power supply disconnected, and confirm that the adjustment value is “CC” in each item number.

Note: Be sure to disconnect the AC adapter when exchanging the resistors. Doing so with the power supply connected causes a trouble.

Item No.

Display

Connecting Resistor

 

 

 

2262

262 AD **

No resistor

 

 

 

2263

263 AD **

No resistor

 

 

 

2264

264 AD **

22 (0.1 watts or more)

 

 

 

2265

265 AD **

10 (1.0 watts or more)

 

 

 

2266

266 AD **

10 (1.0 watts or more)

 

 

 

2267

267 AD **

2.2 (1.5 watts or more)

Table 3-5-1. Charge Adjustment Specifications

18

Image 18
Contents MD Mechanism Type MT-MZNH900-181 Optical Pick-up Name SpecificationsModel Name Using Similar Mechanism On nextFlexible Circuit Board Repairing MZ-NH700/NHF800Diagrams Table of ContentsDisassembly GeneralSection Servicing Notes Unleaded SolderSection General Display window MARK/REC +N button Jog dial Way control keyDisassembly Disassembly FlowSection Case Lower Section Main BoardCase Upper Section Mechanism Deck Section MT-MZNH900-181, MD Standard PINSET Chassis Assy Gear BSA, Gear SBOP Service Assy Holder Assy Position of Ferrite CoreTest Mode 00# VerOutline AdjF 00#Manual 0000000 CD RunOfsRun OPChkN2#### ####N1#### $$$$$$ ##131 ###S Electrical AdjustmentsTemp PwrAdjPwrAdj adjustments ItemNo Display Specification value Measuring point211 AD 261 AD VBsAdj adjustmentsVBsAdj Charge Function Check111 ###S DiscPr113 ###S Servo Overall Adjustment Releasing The Test ModeResume Clear Section Diagrams Block Diagram MD Servo SectionBlock Diagram Audio Section MICBlock Diagram Power Supply Section CLK aConductor Side Pattern face are indicated Parts face side Lead layout of conventional ICAbbreviation EE East European model Schematic Diagram Main /9 See page 36 for IC Block Diagram 2FOSchematic Diagram Main /9 See page 36 for IC Block Diagrams GNDCSPChip Size Package CTL2ICHG XRST2 Mute 30 Sgnd Schematic Diagram Main /9 Lrck Xbck Xcsadc PoencloseswTOU NDG Printed Wiring Board Main /2 Semiconductor LocationUses unleaded solder IC601 60 IC Block Diagrams IC301 AK5356VN-LIC601 SC901585VAR2 IC602 R1160N121B-TR-FA HN58X2564FPIEZ IC Pin Function Description Davss DavddDVDD25LPF OscvddCltv FiliFilo DvregoDclsoutr VreflVrefr DclsoutlSO0 AccessledSI0 SCK0PWM DRVXcsnv GndswHizspdl SCS4Hizsld SETCODE3Section Exploded Views 311Ref. No Description 2023-318-1 NH7002023-317-1 NHF800 US110 Chassis Section109 117 111 124 125M702 Mechanism Deck Section MT-MZNH900-181Ref. No Description Remark 160 3-263-453-01 PLATE, Ratchet M703Section Electrical Parts List Main 1uF 10% 10V C419 125-777-11 C415 125-777-111uF 10% 10V C416 125-777-11 1uF 10% 10V C420 125-777-111uF 10% 10V C672 127-820-11 C669 125-837-111uF 10% C671 125-777-11 7uF 10% 16V C673 125-777-11MA22D2800LS0 D303 8-719-056-54 Diode MAZS068008SONNCD6.8H-T1 MA8056-L7uH L701 216-295-00 L607 419-881-1147uH L608 400-402-21 L702 216-295-00R315 218-990-11 R305 RES-CHIP 100 16W R306 10K R307 R308 216-864-11R309 RES-CHIP 16W R310 R312 R314 218-990-11 R433 245-455-21R652 218-990-11 R649 245-456-21R650 216-793-11 R653 RES-CHIP 22K 16W R654 R657 218-990-11470K 16W R920 218-985-11 S894 SWITCH, Push 2 KEYRef. No Description Remark R918 218-985-11 470K 16W R922 218-977-11504 501 502503 506 504Revision History

NHF800 specifications

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