can anyone helps me solve this problem i have WD 500G and the log as follows:
Family:................................. : FBLite 2.5"
Techno mode key......................... : Ok

HDD Status sector....................... : Ok

RAM:
System controller (SoC)................. : 88i9446C0 0x(A5C0)
HDD Info reading........................ : Ok
Heads number............................ : 4
Cyl Count............................... : 256

ROM:
Read ROM................................ : Ok
ROM Data size........................... : 256 Kb
Flash ROM dir reading................... : Ok
Flash ROM dir reading (Ext)............. : Ok (Active)
Modules directory address............... : 157 987
SA regions address...................... : by default
SA regions address (RAM)................ : by default
Module 02 access........................ : Granted

SA SPT.................................. : 1437

SA Translator loading................... : Ok

ROM Modules:
ROM version............................. : 16.7CG
Module 4F F/W version................... : 0016007C
Overlay F/W version..................... : 16.7CG
Servo F/W version....................... : N0.41

Heads configuration..................... : by map
Heads number............................ : 4
Heads number in use..................... : 4
Switched off heads...................... : No
Heads map............................... : 0,1,2,3

Relocations............................. : 0 (0)
Read ROM DCM............................ : Ok

Power up log reading.................... : Ok
Power up load dir data.................. : Yes
Power up load permovl................... : No
Power up load CFG data.................. : No
----+------+---------+-------+----------+----------------------------------------------------------------
NN | Step | Time | Flags | Info | Description
----+------+---------+-------+----------+----------------------------------------------------------------
19 | 105 | 21.84 s | 3F | 514051AD | EXEC_POWERUP_LOAD_DIR_DATA(DISK ECC ERROR LDPC ITR UNCORR ERR)
----+------+---------+-------+----------+----------------------------------------------------------------

Service area:
SA dir reading (ID)..................... : Module ID 01 reading error: Drive readiness timeout 10000 ms.
SA dir reading (ABA/CHS)................ : Module 01 reading error: ABA 157 987 C:1(1) reading error Device Error Detected: "VSC ERR UNSUP ACTION CODE"

SA Access............................... : Copy 0,Copy 1

Configuration reading................... : Module ID 02 reading error Device Error Detected: "FM ERR NOT FOUND IN DIR"

DCM in module 47........................ : ZY
DCM in module 0A........................ : |Q|HZYN1H6
DCM in module 02........................ :

weak heads, wrong pcb, shifted sa (not probable)?

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Adatmentés - Data recovery

Thanks for the reply pepe
I Swamped the rom to other working PCB and it spins fine, So should i change the heads or is there any way to work without opening the drive? Please advise me.
Thanks.

have you confirmed rom is native?

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Adatmentés - Data recovery

To check is ROM original or not compare WWN in ROM module 0x0D with WWN on the disk label.