Sony GY-8240UWD Maintenance Manual page 257

l. CH06-Capstan Motor Check
Function: Checks the functions of the capstan.
Operation:
(1) Without loading any cassette, enter "CH06"". The capstan operation check mode is entered and the
following will be displayed.
SV1_DIAG=>CH06"
CH06:Capstan
H:RevMax/J:Rev1x/K:Fwd1x/L:FwdMax/;:Still/':':EXIT
SV1_HJKL;:=>
0000 0000 0000
By entering the H, J, K, L or " ; " key, the capstan motor will operate at the speed listed below.
H: Capstan reverse maximum speed
J: Reverse x1 speed
K: Forward x1 speed
L: Capstan forward maximum speed
" ; ": Stop
" : ": Exits the capstan operation check mode.
(2) Check the following.
1 Check that when the J key is pressed, the capstan runs in the reverse direction at constant speed.
2 Check that when the K key is pressed, the capstan runs in the forward direction at constant speed.
(3) To end the check, enter " : ".
When the above fail:
. Check the capstan motor drive circuit (SV-205 board).
. Check the capstan FG output.
. Check the capstan motor FG amplifier circuit.
GY-8240UWD
GY-8240FC
5-4. DIAG Mode
5-41